Reviewing a typical protective device trip curve (click here to see Fig. 2), it can be divided into three regions. First is the “instantaneous region,” which is the region intended to interrupt ...

The ACW Series of molded-case circuit breakers are designed to disconnect power and provide circuit protection for low-voltage distribution systems The ACW Series of molded-case circuit breakers are ...

Wherever circuits need protection against current overloads or short circuits, you’ll find circuit breakers. They range from fingernail-sized devices for semiconductor protection to truck-sized ...

As noted in NFPA 70B, insulated-case and molded-case circuit breakers should be kept clean of external contamination (Comstock/Stockbyte/Thinkstock). Low-voltage ...

OMICRON's CIBANO 500 is the first 3-in-1 test system to combine a precise micro-ohmmeter, a multi-channel timing analyzer, and a powerful coil and motor supply in a single, lightweight device (20 ...

THE Electrical Research Association has recently reported an interesting development which has taken place in connexion with its programme of research on gas blast circuit breakers. Normally the ...

Siemens has developed new, molded case circuit breaker (MCCB) frame sizes for high current applications to perfectly address the needs of switchgear manufacturers and panel builders in an environment, ...

The FORMULA line comes in two frames, A1 and A2, which reach to 100A and 250A respectively, each available in one pole, two pole and three pole varieties, in a fixed version with front terminals ...