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breaker control switches are specially designed for remote tripping and closing of cricuit breakers, and recommended wherever severe frequent operation are required and to eliminate the possibility of coil burnout with two consecutive closing operations. switches are constructed in accordance with latest engineering practices the contacts are of agcdo, double butt type, ensuring long life and better breaking capacity insulation is achieved with glass filled polyamide. The construction of our switch allows flexibility in programmes with different switching combination like stay put, swquence locking, lost motion device, spring return mechanism. general endurance - mechanical - 100, 000 operations at 300 cycle/hour electrical - 10, 000 operations at a20 cycle/hour operational temperature - 25 0 c to 55 0 frequency upto 5 khz coding system the breaker control switches will bear the code no. As given below (3) mechanism a) spring return b) spring return with lost motion device c) spring return with lost motion device plus sequence locking d) spring return sequence locking e) stay put (4) & (5) no. Of standard packets (1no + 1nc per packet) example - 01 = 1 packet = 1 no + 1 nc 02 = 2 packets = 2 no + 2 nc 11 = 11 packets = 11 no + 11 nc (6) & (7) no. Of packets with lost motion device example - 02 = 2 packets = 2 no + 0 nc 11 = 11 packets = 11 no + 11 nc (8) ampere rating 16 amp. = 16 25 amp. = 25 32 amp. = 32 (9) angle of throw 4 = 45 0 6 = 60 0 9 = 90 0 (10) colour combinations yr = yellow / red gb = gray / black bb = black / black ab = aluminium foil / black
Features : 1) Rating Range : 16, 25, 32. 2) Ideal for all types of small drives for direct switching and control of three phase Ac motors. 3) Ideal for installation on machine tools. 4) Motor duty switches and HP rated switches are suitable for reliable and safe starting and stopping of Three Phase AC Motors even under heavy starting current of upto 10 times and locked rotor conditions. 5) Suitable for frequency of operation upto 200 switching cycles per hour. 6) Mechanical life 1, 00, 000 switching cycles.
Isolators are ON-OFF Switches to isolate the power to a particular area of operation. The Isolator Switches are offered in a wide range, from 1 pole to 12 poles. Isolators with spring return, upto 4 poles are available to energise circuits. Isolators with preclose contacts are used for safety circuits and for connecting neutral and earth lines. Isolators are generally rated for AC1/AC21 while for motor applications, they need to be rated for AC3/AC23A duty.
SERIES SCT, ENCLOSED MEASUREMENT CTS The Current Transformers (Cts) are designed for ease of mounting and access, as well as to minimise space requirements. The standard frames, which include overlapping current ratios, permit selection for any cable or busbar system. Enclosed, Tape Wound and Resin Cast Measurement Cts and Tape Wound and Resin Cast Protection Cts for DIN Rail, Busbar and Bracket Mounting are offered but CTs beyond the range specified in this catalogue, also can be offered on request. MEASUREMENT CTS Measurement CTs are required to transform the primary current, at various classes of accuracy, as specified by the class designation, over a current range from 5% to 120% of its rated primary current. The design of this type of CT requires the inclusion of a core and winding which will, when connected to its rated burden, perform within the limits of error as indicated by the standards specifications. It is an advantage for a measurement CT to saturate above this range, which provides a protection against damage to instrument by limiting the secondary current, when surge current or faults appear in the primary circuit.
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