Jul. 12—SEABROOK — NextEra Energy says Seabrook Station is operating safely and that its generator circuit breaker meets Nuclear Regulatory Commission requirements, contrary to a Massachusetts state ...

Siemens has launched a refined medium-voltage circuit-breaker. The 3AH4 vacuum circuit-breakers have an operating current of 4000 A for the 36-kV voltage level. It is the first vacuum circuit-breaker ...

Siemens Power Transmission and Distribution has expanded its range of products with the new high-current and generator circuit breaker 3AH37 Siemens Power Transmission and Distribution has introduced ...

Large circuit breakers in service today at industrial and commercial facilities come in many shapes, sizes, configurations, and voltage ratings — with the primary purpose of protecting electrical ...

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 ...

Download this article in PDF format. It’s now common to see circuit boards that carry hundreds of amps, especially in intensive data-processing applications, electric vehicles, and ac distribution.

SEABROOK — NextEra Energy says Seabrook Station is operating safely and that its generator circuit breaker meets Nuclear Regulatory Commission requirements, contrary to a Massachusetts state senator's ...