Class C Switching Surge Protection Devices are more refined protection devices designed specifically to protect the sensitive equipments against damaging switching surges. The unwanted power surges are basically spikes in voltage which are very brief, usually lasting millionths of a second. 
Surges can fluctuate in duration and magnitude, rising and falling from a few hundred volts to several thousand volts. A RDSO comply - RDSO/ SPN/ TC/98/2011 or latest and RDSO/SPN/156/2012 version switching surge protection is an electrical device commonly used to protect Electrical, Electronic instruments or components from power surges. 
Switching Surges arise due to switching operations are caused by: Switching off inductive loads (e.g. transformer, coils, motors) Ignition and interruption of electric arcs (e.g. arc welding devices) Tipping of fuses
Type 2 Surge Protective Devices create a link between the conductor of electrical equipment and the ground that stops the transient over voltages on equipment. Type 2 surge protector is the best way to keep every kind of voltage surges away from low-voltage switching to make sure the complete protection of secondary panel. Class C SPD is a voltage-surge arrester which is used for the protection of equipments like UPS, MCB DB’s CNC Machine/ drives etc. 
Switching surge protector is a complete Protection made up of superior quality raw material with an extremely non-linear quality. The most striking features of this device are its extremely short response time, a low protection level and a high current distraction capacity, coupled with a long functional life. Class C SPDs are installed at equipment level to save your machine panel.
Further Class C is classified according to the wiring system in industries and houses. At home, there is a single phase wiring system according to the load. In industries, load is high as we use heavy duty machines so there is 3-phase wiring system. 

Class C Switching Surge Protection Devices are more refined protection devices designed specifically to protect the sensitive equipments against damaging switching surges. The unwanted power surges are basically spikes in voltage which are very brief, usually lasting millionths of a second. 
Surges can fluctuate in duration and magnitude, rising and falling from a few hundred volts to several thousand volts. A RDSO comply - RDSO/ SPN/ TC/98/2011 or latest and RDSO/SPN/156/2012 version switching surge protection is an electrical device commonly used to protect Electrical, Electronic instruments or components from power surges. 
Switching Surges arise due to switching operations are caused by: Switching off inductive loads (e.g. transformer, coils, motors) Ignition and interruption of electric arcs (e.g. arc welding devices) Tipping of fuses
Type 2 Surge Protective Devices create a link between the conductor of electrical equipment and the ground that stops the transient over voltages on equipment. Type 2 surge protector is the best way to keep every kind of voltage surges away from low-voltage switching to make sure the complete protection of secondary panel. Class C SPD is a voltage-surge arrester which is used for the protection of equipments like UPS, MCB DB’s CNC Machine/ drives etc. 
Switching surge protector is a complete Protection made up of superior quality raw material with an extremely non-linear quality. The most striking features of this device are its extremely short response time, a low protection level and a high current distraction capacity, coupled with a long functional life. Class C SPDs are installed at equipment level to save your machine panel.
Further Class C is classified according to the wiring system in industries and houses. At home, there is a single phase wiring system according to the load. In industries, load is high as we use heavy duty machines so there is 3-phase wiring system.