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 ...

So you have power circuit breakers at your facility, and they seem to be just fine, sitting there quietly doing their job. What you may not realize is that even though your circuit breakers are ...

The TDR900 from Doble Engineering is a state-of-the-art Circuit Breaker Test System engineered to test all types of circuit breakers. The TDR900 from Doble Engineering is a state-of-the-art Circuit ...

Breaker manufacturers typically identify the capacity of their products with an "Impact Energy Class" rating (expressed in "foot pounds") which, to be honest, is usually an arbitrary number based ...