Instrument Selector Switches

Breaker Control Switches

Instrument Selector Switches

Application :

• Rotary switches are used for controlling, automating and monitoring movements of a machine. These switches are used successfully as control switch on CNC machines, stamping machines, forging presses, sheet metal forming machines, welding machinery, machine tools, packaging machines, assembly machinery, transfer lines, transport equipment, lifts & elevators, construction machinery, mining equipment, steel plants and in the off-road automobile industry.
• Attractive combination of colors for Knob, Handle & Escutcheon plates.
• Silver alloy contacts used have a very high durable
• Pad locking and lockable handles available for additional security and safety
• A double break contact ensures positive making
• Cams used for contacting makes it suitable for switching in various programmable combinations.
• Modular design to achieve any number of poles wire

Construction : This switch is designed to operate electric motors and hence conforms to motor duty test for reversing and forwarding as well as inching of electric motor. They principally offer large number of possible switching combinations with consistent quality and reliability. They are modular in design with contact housing stacked with indexing mechanism. The operating knob is attached to steel shaft that rotates the cams which drive the contacts to an unlimited combination of contact programme. The housing is made of engineering thermoplastic material, each housing consists of two sets of contacts. The contacts are mechanically opened & are closed using springs that provide force to achieve desirable contact pressure. Two poles can be arranged in each set of contact housing making it compact for the application. This switch has IP65 ingress protection under PD3 environment making the switches safe and secure.

Application :

• Breaker Control Switches are used in MV, HV & UHV Breakers. They are used as Selector Switches for controlling Locally or Remotely. They are used to Trip or Close the Breakers with momentary contacts
• Pistol grip & Wing type Lockable handles available for security & safety
• Silver alloy contacts used, have very high durability & endurance.
• Cams it suitable for for switching For switching in various programmable combinations.
• A double break contact ensures positive making & breaking
• Superior insulating material ensures electrical & mechanical stability.
• Modular design to achieve any number of poles with minimum components.

Construction : Rotary Cam Switches are modular in design with contact housing stacked with indexing mechanism. The operating knob is attached to steel shaft that rotates the cams which drive the contacts to an unlimited combinations of contact programmes. The housing is made of engineering thermoplastic material contents two sets of contacts. The contacts are mechanically opened 8t are closed using springs that provide force to achieve desirable contact pressure. Two poles can be arranged in each set of contact housing making it compact for the application.

Application :

• Superior Aesthetic and Technologically updated conforming to IS/IEC-60947-3.
• Flame Retardant material Finger Protection, Grey-Black & Yellow Red Knob variants available.
• Silver alloy contacts used has a very high durability & endurance.
• Superior insulating material ensures electrical & mechanical stability.
• A double break contact ensures positive making & breaking.
• Pad locking and lockable handles available for security & safety.

Construction : These Rotary Cam Switches are modular in design with contact housing stacked with indexing mechanism. The operating knob is attached to steel shaft that rotates the cams which drive contacts to unlimited combinations of contact program. In this case the combination of cams is programmed to give one output from the selection of 3 phase input. The housing is made of engineering thermoplastic material which contains two sets of contacts with multi-cam provision in single housing. The contacts are mechanically opened and are closed using springs that provide force to achieve desirable contact pressure. Each operation has an inbuilt provision to wipe the butt contact for enhancement of contacting every time the switch is being operated thus augmenting endurance and reliability of switches.

Application :

• Rotary knife switches are modular & compact in design and are very versatile for switching a.c. as well as d.c. resistive & inductive loads. These switches are used as Mode selector switch and as instrument selector i.e. Ammeter selector & Voltmeter selector switches. They offer a benefit to select and measure currents & voltages between phase and between phase and neutraL
• Selection of Current & Voltages between phases or between phase and neutral.
• Superior insulating materil ensures electrical & mechanical Stability.
• Self cleaning of Contacts is done during the operation.
• Modular design to achieve any number any number of poles with minimum components.

Construction :

• Rotary knife switches are generally suitable for 45', 600 and 90" angle of rotational operation. The operating knob is followed by a steel shaft which passes through indexing mechanism and series of moving contact blades made of phosphor bronze material. The two blades of phosphor bronze shove over fixed terminal, having inbuilt properties of good wear resistance ensures positive contacting and durability of contact. The terminals are housed in disc shaped housing and the terminations are open to free air.
• Cam type rotary switches can be used as instrument selector switches to achieve high electrical durability and endurance.

Auxiliary Switcheshave silver-plated fixed contacts, made out of brass, held in molded melamine switch plates. In Auxiliary Switches, the silver-plated moving contacts, made out of phosphor bronze, are molded on nylon coated central shaft. The Auxiliary Switches come with Screw Type or Slot Type. Also, there is arrangement for Snap Action or Wiping Type Mechanism. The Auxiliary Switches are widely used in switching mechanism.

Applications

• Isolators / Disconnectors, Circuit Breakers
• Load Break Switches
• Making-breaking circuits
• Isolation of power circuits
• Switching of auxiliary circuits
• Motor application

Used In

• Power Industry
• Electrical Industry

Technical Specifications

• Rated Voltage :> 240V DC
• Rated Current Making Capacity :10A DC
• Rated Current Breaking Capacity :2A DC
• Time-Constant :20 ms
• Done As Per IS-6875 & IEC 694

Application :

• Rotary auxiliary cam switches are modular in design and are versatile for switching a.c.as well as low voltage d.c. resistive and inductive loads. They are used as auxiliary contacts in equipments such as MV and HV Vacuum Circuit Breakers, Gas Circuit Breakers, Isolators and various equipments wherein it is linked mechanically to the equipment and follows the position as per the linkage. In most cases a straight motion of main contacts is converted into rotational movement through links and levers. These switches offer advantage of having unlimited combinations of switching angles and indexing angles.
• Cams used for contacting make them suitable for switching in various programmable combinations.
• Modular design to achieve any number of poles with minimum components.
• Silver Alloy contacts used have a very high durability & endurance.
• Superior insulating material ensures electrical & mechanical stability.
• A double break contact ensures positive making & breaking.
• Available in various mounting arrangements and levers.

Construction : Rotary auxiliary cam switches are modular in design with contact housing stacked with indexing mechanism. A central steel shaft rotates the cams which drive the contacts to unlimited combinations of contact programme. The housing is made of engineering thermoplastic material, each housing consists of two sets of contacts. The contacts are mechanically opened & closed using springs that provide force to achieve desirable contact pressure.

Accessories :

• Lever can be provided along with the switches as per requirement.
• Mounting arrangements can be suitably custom made.
• Lost motion contacts can be cascaded.

Application :

• This Isolator snitch is used for Isolating d.c. source coming from Photovoltaic Arrays to grid-connect inverters. Positioned adjacent to the inverter this Isolator switch is required to provide a means of manually isolating the entire PV array during system installation or any subsequent maintenance. It provides the benefit of isolating d.c. as well as a.c. circuits with the same single switch. Hence simplifying and reducing the number of devices in the installation
• Photovoltaic-installations are to be equipped with DC-isolators according to IEC 60364-7-712/ IEC 60947. Switch disconnectors IS0 ensures a reliable switching for 16A @1000v and 32A @600V for DC21B utilisation category.
• Switch design aesthetically sound and robust using flame retardant engineering Plastic for heavy duty Working
• Silver plated wiping self cleaning contacts ensure longer life.
• IP 65 protection helps it to withstand extreme and polluted environmental conditions under PD3
• Various Mounting Options Like Din Rail, Front Panel single hole, and rear mounting are available.
• Combination of d.c. & a.c. in one switch is available. This reduces the number of devices in the circuit
• Switch has been tested as per IEC 60947-3 : 2012.

Construction :

• DC isolator switch is an snap action operator independent switch. The operator cannot control the contact displacement after certain degree of knob rotation as the snap action mechanism triggers the contacts to changeover during switching between ON and OFF positions. Silver plated electrolytic copper terminals and contacts ensures high electrical and thermal conductivity.
• DC Solar Isolators use a rotary knife contact mechanism, so when the unit is operated, the handle movement gives a double make-break per contact set. As d.c load switching creates electrical arcing, the switch is designed for faster arc extinguishing capability hence enhancing the life of the switch operations. The knife contacts used are self-cleaning hence reliable for positive change over throughout its life. The contacts are vibration resistant with reduced contact resistance. This contact system ensures that power loss per pole is kept as low as possible and consistent over the life of the product. Our isolator has advantage over other conventional style isolators where entrapment of contaminants and then subsequent compression on lateral operation can lead to variable and increasing contact resistance, and hence per pole losses.
• The engineering plastic used is flame retardant & adhere to highest fire safety parameter
• The overall design of a solar isolator is satisfactory for use in installations classified as either DC-21A, DC-2113 or DC-22A and so suitable for a high number of "off load" operations (without current) and also a high number of operating cycles "on load" (with current).

Auxiliary Switcheshave silver-plated fixed contacts, made out of brass, held in molded melamine switch plates. In Auxiliary Switches, the silver-plated moving contacts, made out of phosphor bronze, are molded on nylon coated central shaft. The Auxiliary Switches come with Screw Type or Slot Type. Also, there is arrangement for Snap Action or Wiping Type Mechanism. The Auxiliary Switches are widely used in switching mechanism.

Applications

• Isolators / Disconnectors, Circuit Breakers
• Load Break Switches
• Making-breaking circuits
• Isolation of power circuits
• Switching of auxiliary circuits
• Motor application
• Gear Boxes
• Switchgears
• Earth Switch

Used In

• Power Industry
• Electrical Industry
• Switchgears
• Breakers
• Isolators

Rotary auxiliary cam switches are modular in design are very versatile for switching a.c as well as low voltage d.c. resistive & inductive loads. They are used as auxiliary contacts in equipments such as MV & HV – Vacum Circuit Breakers, Gas Circuit Breakers, Isolators and various equipments wherein it is linked mechanically to equipment and follows the position as per linage. In most cases a straight motion of main contacts is converted into rotational through links & levers. These switches offer advantages of having unlimited combinations of switching angles and indexing angles.

Application : Rotary auxiliary knife switches popularly known as wafer switches due to their modular & companct design are very versatile for switching a.s. as well as d.c. resistive & iductive loads. They are used as auxiliary contacts in equipments such as MV & HV - Vacuum Circuit Breakers, Gas Circuit Breakers, Isolators & Various equipments, where it is linked mechanically to the equipment and follows the position as per the linkage. In most cases a straight motion of main contacts is converted into rotational through links & levers to operate the switches.

Features :

• Knife type of contacting making it suitable for switching d.c. loads.
• Self cleaning of contacts is done during the operation.
• Modular design to achieve any number of poles with minimum components.
• Brass inserts used in threads to endure more than required torque while mounting.
• Superior insulating material ensures electrical & mechanical stability.

Application : We are one of the leading manufacturer and supplier of Rotary Auxiliary Hybrid Combination Switches.

Features :

• Operational Current 7.5A at 464D.C.
• Operational Current (Cascaded) 2A at 220V D.C.
• Used as Auxiliary contacts in HV Gas Circuit Breakers & Similar Equipments.
• Value Engineered for optimum performance.
• Use of heavy contacts for control & compact contacts for indication circuit.
• Transparent body for operator convenience.
• Modular & Stackable design.

Application : Rotary Auxiliary Wiping contact switches are modular in design and are very versatile for switching a.c. as well as d.c. resistive & inductive loads. They are used as auxiliary contacts in equipments such as HV - Gas Circuit Breakers and various equipments where in it is linked mechanically to the equipment and follows the position as per the linkage. In most cases a straight motion of main contacts is conver ted into rotational through links & levers.

Features :

• Wiping type of contacting making it suitable for switching d.c. loads.
• Self cleaning of contacts is done during the operation.
• Capable of carrying heavy currents.
• Modular design to achieve any number of poles with minimum components.
• Superior insulating material ensures electrical & mechanical stability.

Features :

• Auxiliary Switch 17 position & 22 position.
• Used in On Load Tapchangeres as Tap position indicator with various other in-buil functions such as selector, odd-even & limit switch.
• Value Engineered for customer requirement with superior performance
• Various programme achieved in single switch
• Flexible design to suit varied customer plans
• In built dial position indicator

Application :

• Shirke Electro is also engaged in making & branding products for big brands like Schneider Electric and POLYCAB. We possess expertise in making products on our assembly lines according to customers design and requirements.
• We manufacture Single phase & Three phase Manual D.O.L as well as Manual Star-Delta Starters exclusively for Schneider Electric under their ‘JEEVAN' brand and for Polycab Wires Pvt Ltd under their ‘SARPANCH’ brand.

Application :

• Shirke Electro is also engaged in making & branding products for big brands like Schneider Electric. We possess expertise in making products on our assembly lines according to customers design and requirements.
• We manufacture 32Amp, 63Amp and 80 Amp Switch Disconnector Fuse Unit exclusively for Schneider Electric Ltd.

They are used as Control switches in Control Panels and equipments such as Phase Changeover Panels, MV & HV - Vacuum Circuit Breakers, Gas Circuit Breakers, On Load Tap Changers, Motor control panels, instrumentation Panels, Machine tools & Electro-medical equipments. The switches are used as Mains switch, Selector Switch, Programme Switch or for tripping or closing of breakers either locally or from remote site. These switches offer advantage of having unlimited combinations of switching angels and indexing angels with stay put and spring return momentary contacts. Lost motion contacts can be cascaded, used for additional protection or for activating annunciator.

Features:

•  Continues current -10A d.c
•  Opereational current 2A at 220V D.C
•  Used as Auxiliary contacts in MV & HV Contact Brakers, Isolators, Ring Main Unit and similar   equipments
•  Compact & Modular Design
•  Knife Type contacting, making it suitable for D.C current switching
•  Self cleaning silver plated contacts can be cascaded to other switching devices

Applications

Rotary knife switches are mudular & compact in design and are very versatile for switching a.c. as well as d.c. resistive & inductive loads. They are used as Control switches in Control Panels and equipments such as MV & HV - Vaccum Circuit Breakers, Gas Circuit Breakers, On Load Tap Changers and Motor control panels. The switches are used as Mains switch or for instrument selector i.e. Ammeter selector & Voltmeter selector switches. These switches offer advantage of having quick make and break contacts for on load d.c. applications.

Features:

•  Knife type of contacting making it suitable for switching on load d.c.
•  Self cleaning of contacts is done during the operation.
•  Modular design to achieve any number of poles with minimum components.
•  Specially designed operator independent quick make/break mechanism.
•  Superior insulating material ensures electricals & mechanical stability.

Specification:

•  Conventional free AIr Thermal Current Rating (lth):16 Amp.
•  Operational Voltage: 220 volts d.c.
•  Operational Current: 6 Amp.
•  Utilisation Category: DC13
•  Switching capacity: Inductive loads with L/R ratio (time constant) of 20mS
•  Dielectric Strength: 2.0 kv for 1 minute
•  Insulation Resistance: > 500 Mohm
•  Mechanical Durability: > 5, 00, 000 operations
•  Electrical Durability: > 100, 000 operations

Instrument Selector Switches

Breaker Control Switches

Instrument Selector Switches

Application :

• Rotary switches are used for controlling, automating and monitoring movements of a machine. These switches are used successfully as control switch on CNC machines, stamping machines, forging presses, sheet metal forming machines, welding machinery, machine tools, packaging machines, assembly machinery, transfer lines, transport equipment, lifts & elevators, construction machinery, mining equipment, steel plants and in the off-road automobile industry.
• Attractive combination of colors for Knob, Handle & Escutcheon plates.
• Silver alloy contacts used have a very high durable
• Pad locking and lockable handles available for additional security and safety
• A double break contact ensures positive making
• Cams used for contacting makes it suitable for switching in various programmable combinations.
• Modular design to achieve any number of poles wire

Construction : This switch is designed to operate electric motors and hence conforms to motor duty test for reversing and forwarding as well as inching of electric motor. They principally offer large number of possible switching combinations with consistent quality and reliability. They are modular in design with contact housing stacked with indexing mechanism. The operating knob is attached to steel shaft that rotates the cams which drive the contacts to an unlimited combination of contact programme. The housing is made of engineering thermoplastic material, each housing consists of two sets of contacts. The contacts are mechanically opened & are closed using springs that provide force to achieve desirable contact pressure. Two poles can be arranged in each set of contact housing making it compact for the application. This switch has IP65 ingress protection under PD3 environment making the switches safe and secure.

Application :

• Breaker Control Switches are used in MV, HV & UHV Breakers. They are used as Selector Switches for controlling Locally or Remotely. They are used to Trip or Close the Breakers with momentary contacts
• Pistol grip & Wing type Lockable handles available for security & safety
• Silver alloy contacts used, have very high durability & endurance.
• Cams it suitable for for switching For switching in various programmable combinations.
• A double break contact ensures positive making & breaking
• Superior insulating material ensures electrical & mechanical stability.
• Modular design to achieve any number of poles with minimum components.

Construction : Rotary Cam Switches are modular in design with contact housing stacked with indexing mechanism. The operating knob is attached to steel shaft that rotates the cams which drive the contacts to an unlimited combinations of contact programmes. The housing is made of engineering thermoplastic material contents two sets of contacts. The contacts are mechanically opened 8t are closed using springs that provide force to achieve desirable contact pressure. Two poles can be arranged in each set of contact housing making it compact for the application.

Application :

• Superior Aesthetic and Technologically updated conforming to IS/IEC-60947-3.
• Flame Retardant material Finger Protection, Grey-Black & Yellow Red Knob variants available.
• Silver alloy contacts used has a very high durability & endurance.
• Superior insulating material ensures electrical & mechanical stability.
• A double break contact ensures positive making & breaking.
• Pad locking and lockable handles available for security & safety.

Construction : These Rotary Cam Switches are modular in design with contact housing stacked with indexing mechanism. The operating knob is attached to steel shaft that rotates the cams which drive contacts to unlimited combinations of contact program. In this case the combination of cams is programmed to give one output from the selection of 3 phase input. The housing is made of engineering thermoplastic material which contains two sets of contacts with multi-cam provision in single housing. The contacts are mechanically opened and are closed using springs that provide force to achieve desirable contact pressure. Each operation has an inbuilt provision to wipe the butt contact for enhancement of contacting every time the switch is being operated thus augmenting endurance and reliability of switches.

Application :

• Rotary knife switches are modular & compact in design and are very versatile for switching a.c. as well as d.c. resistive & inductive loads. These switches are used as Mode selector switch and as instrument selector i.e. Ammeter selector & Voltmeter selector switches. They offer a benefit to select and measure currents & voltages between phase and between phase and neutraL
• Selection of Current & Voltages between phases or between phase and neutral.
• Superior insulating materil ensures electrical & mechanical Stability.
• Self cleaning of Contacts is done during the operation.
• Modular design to achieve any number any number of poles with minimum components.

Construction :

• Rotary knife switches are generally suitable for 45', 600 and 90" angle of rotational operation. The operating knob is followed by a steel shaft which passes through indexing mechanism and series of moving contact blades made of phosphor bronze material. The two blades of phosphor bronze shove over fixed terminal, having inbuilt properties of good wear resistance ensures positive contacting and durability of contact. The terminals are housed in disc shaped housing and the terminations are open to free air.
• Cam type rotary switches can be used as instrument selector switches to achieve high electrical durability and endurance.

Auxiliary Switcheshave silver-plated fixed contacts, made out of brass, held in molded melamine switch plates. In Auxiliary Switches, the silver-plated moving contacts, made out of phosphor bronze, are molded on nylon coated central shaft. The Auxiliary Switches come with Screw Type or Slot Type. Also, there is arrangement for Snap Action or Wiping Type Mechanism. The Auxiliary Switches are widely used in switching mechanism.

Applications

• Isolators / Disconnectors, Circuit Breakers
• Load Break Switches
• Making-breaking circuits
• Isolation of power circuits
• Switching of auxiliary circuits
• Motor application

Used In

• Power Industry
• Electrical Industry

Technical Specifications

• Rated Voltage :> 240V DC
• Rated Current Making Capacity :10A DC
• Rated Current Breaking Capacity :2A DC
• Time-Constant :20 ms
• Done As Per IS-6875 & IEC 694

Application :

• Rotary auxiliary cam switches are modular in design and are versatile for switching a.c.as well as low voltage d.c. resistive and inductive loads. They are used as auxiliary contacts in equipments such as MV and HV Vacuum Circuit Breakers, Gas Circuit Breakers, Isolators and various equipments wherein it is linked mechanically to the equipment and follows the position as per the linkage. In most cases a straight motion of main contacts is converted into rotational movement through links and levers. These switches offer advantage of having unlimited combinations of switching angles and indexing angles.
• Cams used for contacting make them suitable for switching in various programmable combinations.
• Modular design to achieve any number of poles with minimum components.
• Silver Alloy contacts used have a very high durability & endurance.
• Superior insulating material ensures electrical & mechanical stability.
• A double break contact ensures positive making & breaking.
• Available in various mounting arrangements and levers.

Construction : Rotary auxiliary cam switches are modular in design with contact housing stacked with indexing mechanism. A central steel shaft rotates the cams which drive the contacts to unlimited combinations of contact programme. The housing is made of engineering thermoplastic material, each housing consists of two sets of contacts. The contacts are mechanically opened & closed using springs that provide force to achieve desirable contact pressure.

Accessories :

• Lever can be provided along with the switches as per requirement.
• Mounting arrangements can be suitably custom made.
• Lost motion contacts can be cascaded.

Application :

• This Isolator snitch is used for Isolating d.c. source coming from Photovoltaic Arrays to grid-connect inverters. Positioned adjacent to the inverter this Isolator switch is required to provide a means of manually isolating the entire PV array during system installation or any subsequent maintenance. It provides the benefit of isolating d.c. as well as a.c. circuits with the same single switch. Hence simplifying and reducing the number of devices in the installation
• Photovoltaic-installations are to be equipped with DC-isolators according to IEC 60364-7-712/ IEC 60947. Switch disconnectors IS0 ensures a reliable switching for 16A @1000v and 32A @600V for DC21B utilisation category.
• Switch design aesthetically sound and robust using flame retardant engineering Plastic for heavy duty Working
• Silver plated wiping self cleaning contacts ensure longer life.
• IP 65 protection helps it to withstand extreme and polluted environmental conditions under PD3
• Various Mounting Options Like Din Rail, Front Panel single hole, and rear mounting are available.
• Combination of d.c. & a.c. in one switch is available. This reduces the number of devices in the circuit
• Switch has been tested as per IEC 60947-3 : 2012.

Construction :

• DC isolator switch is an snap action operator independent switch. The operator cannot control the contact displacement after certain degree of knob rotation as the snap action mechanism triggers the contacts to changeover during switching between ON and OFF positions. Silver plated electrolytic copper terminals and contacts ensures high electrical and thermal conductivity.
• DC Solar Isolators use a rotary knife contact mechanism, so when the unit is operated, the handle movement gives a double make-break per contact set. As d.c load switching creates electrical arcing, the switch is designed for faster arc extinguishing capability hence enhancing the life of the switch operations. The knife contacts used are self-cleaning hence reliable for positive change over throughout its life. The contacts are vibration resistant with reduced contact resistance. This contact system ensures that power loss per pole is kept as low as possible and consistent over the life of the product. Our isolator has advantage over other conventional style isolators where entrapment of contaminants and then subsequent compression on lateral operation can lead to variable and increasing contact resistance, and hence per pole losses.
• The engineering plastic used is flame retardant & adhere to highest fire safety parameter
• The overall design of a solar isolator is satisfactory for use in installations classified as either DC-21A, DC-2113 or DC-22A and so suitable for a high number of "off load" operations (without current) and also a high number of operating cycles "on load" (with current).

Auxiliary Switcheshave silver-plated fixed contacts, made out of brass, held in molded melamine switch plates. In Auxiliary Switches, the silver-plated moving contacts, made out of phosphor bronze, are molded on nylon coated central shaft. The Auxiliary Switches come with Screw Type or Slot Type. Also, there is arrangement for Snap Action or Wiping Type Mechanism. The Auxiliary Switches are widely used in switching mechanism.

Applications

• Isolators / Disconnectors, Circuit Breakers
• Load Break Switches
• Making-breaking circuits
• Isolation of power circuits
• Switching of auxiliary circuits
• Motor application
• Gear Boxes
• Switchgears
• Earth Switch

Used In

• Power Industry
• Electrical Industry
• Switchgears
• Breakers
• Isolators

Rotary auxiliary cam switches are modular in design are very versatile for switching a.c as well as low voltage d.c. resistive & inductive loads. They are used as auxiliary contacts in equipments such as MV & HV – Vacum Circuit Breakers, Gas Circuit Breakers, Isolators and various equipments wherein it is linked mechanically to equipment and follows the position as per linage. In most cases a straight motion of main contacts is converted into rotational through links & levers. These switches offer advantages of having unlimited combinations of switching angles and indexing angles.

Application : Rotary auxiliary knife switches popularly known as wafer switches due to their modular & companct design are very versatile for switching a.s. as well as d.c. resistive & iductive loads. They are used as auxiliary contacts in equipments such as MV & HV - Vacuum Circuit Breakers, Gas Circuit Breakers, Isolators & Various equipments, where it is linked mechanically to the equipment and follows the position as per the linkage. In most cases a straight motion of main contacts is converted into rotational through links & levers to operate the switches.

Features :

• Knife type of contacting making it suitable for switching d.c. loads.
• Self cleaning of contacts is done during the operation.
• Modular design to achieve any number of poles with minimum components.
• Brass inserts used in threads to endure more than required torque while mounting.
• Superior insulating material ensures electrical & mechanical stability.

Application : We are one of the leading manufacturer and supplier of Rotary Auxiliary Hybrid Combination Switches.

Features :

• Operational Current 7.5A at 464D.C.
• Operational Current (Cascaded) 2A at 220V D.C.
• Used as Auxiliary contacts in HV Gas Circuit Breakers & Similar Equipments.
• Value Engineered for optimum performance.
• Use of heavy contacts for control & compact contacts for indication circuit.
• Transparent body for operator convenience.
• Modular & Stackable design.

Application : Rotary Auxiliary Wiping contact switches are modular in design and are very versatile for switching a.c. as well as d.c. resistive & inductive loads. They are used as auxiliary contacts in equipments such as HV - Gas Circuit Breakers and various equipments where in it is linked mechanically to the equipment and follows the position as per the linkage. In most cases a straight motion of main contacts is conver ted into rotational through links & levers.

Features :

• Wiping type of contacting making it suitable for switching d.c. loads.
• Self cleaning of contacts is done during the operation.
• Capable of carrying heavy currents.
• Modular design to achieve any number of poles with minimum components.
• Superior insulating material ensures electrical & mechanical stability.

Features :

• Auxiliary Switch 17 position & 22 position.
• Used in On Load Tapchangeres as Tap position indicator with various other in-buil functions such as selector, odd-even & limit switch.
• Value Engineered for customer requirement with superior performance
• Various programme achieved in single switch
• Flexible design to suit varied customer plans
• In built dial position indicator

Application :

• Shirke Electro is also engaged in making & branding products for big brands like Schneider Electric and POLYCAB. We possess expertise in making products on our assembly lines according to customers design and requirements.
• We manufacture Single phase & Three phase Manual D.O.L as well as Manual Star-Delta Starters exclusively for Schneider Electric under their ‘JEEVAN' brand and for Polycab Wires Pvt Ltd under their ‘SARPANCH’ brand.

Application :

• Shirke Electro is also engaged in making & branding products for big brands like Schneider Electric. We possess expertise in making products on our assembly lines according to customers design and requirements.
• We manufacture 32Amp, 63Amp and 80 Amp Switch Disconnector Fuse Unit exclusively for Schneider Electric Ltd.

They are used as Control switches in Control Panels and equipments such as Phase Changeover Panels, MV & HV - Vacuum Circuit Breakers, Gas Circuit Breakers, On Load Tap Changers, Motor control panels, instrumentation Panels, Machine tools & Electro-medical equipments. The switches are used as Mains switch, Selector Switch, Programme Switch or for tripping or closing of breakers either locally or from remote site. These switches offer advantage of having unlimited combinations of switching angels and indexing angels with stay put and spring return momentary contacts. Lost motion contacts can be cascaded, used for additional protection or for activating annunciator.

Features:

•  Continues current -10A d.c
•  Opereational current 2A at 220V D.C
•  Used as Auxiliary contacts in MV & HV Contact Brakers, Isolators, Ring Main Unit and similar   equipments
•  Compact & Modular Design
•  Knife Type contacting, making it suitable for D.C current switching
•  Self cleaning silver plated contacts can be cascaded to other switching devices

Applications

Rotary knife switches are mudular & compact in design and are very versatile for switching a.c. as well as d.c. resistive & inductive loads. They are used as Control switches in Control Panels and equipments such as MV & HV - Vaccum Circuit Breakers, Gas Circuit Breakers, On Load Tap Changers and Motor control panels. The switches are used as Mains switch or for instrument selector i.e. Ammeter selector & Voltmeter selector switches. These switches offer advantage of having quick make and break contacts for on load d.c. applications.

Features:

•  Knife type of contacting making it suitable for switching on load d.c.
•  Self cleaning of contacts is done during the operation.
•  Modular design to achieve any number of poles with minimum components.
•  Specially designed operator independent quick make/break mechanism.
•  Superior insulating material ensures electricals & mechanical stability.

Specification:

•  Conventional free AIr Thermal Current Rating (lth):16 Amp.
•  Operational Voltage: 220 volts d.c.
•  Operational Current: 6 Amp.
•  Utilisation Category: DC13
•  Switching capacity: Inductive loads with L/R ratio (time constant) of 20mS
•  Dielectric Strength: 2.0 kv for 1 minute
•  Insulation Resistance: > 500 Mohm
•  Mechanical Durability: > 5, 00, 000 operations
•  Electrical Durability: > 100, 000 operations