Hot Sale Westinghouse SPB 100 Circuit Breaker 4000 Amp Only USD $14.200.00 Good condition and ready to use, come with 1 year warranty. Heavy duty low voltage insulated circuit breakers used to control and protect high power industrial electrical distribution systems.
Technical Specifications
Frame Rating: 4000 Amps
Interrupting Rating (AIC): 100 kA @ 480 Volts AC
Voltage Class: 600 Volts AC maximum
Poles: 3-Pole configuration
Frequency: 50/60 H
Configuration Meaning (EO DO)
EO (Electrically Operated): This means the internal spring-charging mechanism is equipped with an electric motor operator. It allows for automatic or remote closing and opening through control wiring, rather than requiring a technician to manually pump a handle. It typically features an integrated motor operator, shunt trip, and spring release mechanism.
DO (Drawout): The breaker is built onto a wheeled frame structure designed to slide into and out of a guiding switchgear cradle/cell. Drawout units use self-aligning finger clusters on the back to connect to the main electrical bus bars. This design allows maintenance personnel to safely isolate, service, or swap the breaker without shutting down the entire switchgear lineup.