New models are made of thermo-plastic material that has been branded with material identifications for easy recycling. Older models are being phased out. Mitsubishi Electric Automation, Inc., ...

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 ...

Circuit breakers are at the heart of every modern power system. To ensure the systems are properly protected, it’s essential the breakers should operate correctly when called upon to do so. This means ...

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 single-pole, two-pole and triple-pole devices, available in sizes from 0.5 - 40 Amps, offer optimum and efficient protection for branch and control circuits. The series' current-limiting design ...

To meet the needs of utility and electric power industry maintenance professionals, Doble Engineering Company will host this year's annual Finepoint Circuit Breaker Test & Maintenance Training ...

Table 100.19 from ANSI/NETA MTS-2011 provides recommended test voltages for proof testing and field testing medium-voltage power circuit breakers and switchgear. These three tests should be in your ...

A 240-volt service powers heavy-duty appliances like ovens, air conditioners, water heaters and electric dryers. If something goes wrong in that panel, it may cause those systems to fail, damage the ...

Thermal-magnetic circuit breakers contain two different switching mechanisms, a bimetal switch and an electromagnet. The bimetal serves as a means of handling overcurrents. The bimetal typically sits ...