Siemens HED42B045 – 45A 2 Pole Molded Case Circuit Breaker Buy Direct

Designed to safeguard commercial electrical systems, this 45-amp thermal-magnetic breaker offers reliable long-time and instantaneous trip functions. It carries a robust 42kA interrupting capacity at 480VAC. The bolt-on mounting style ensures a secure connection within Siemens Sentron panelboards, SB switchboards, and MCCs. When upgrading older systems, note that its modern replacement, the 3VA5145-6ED21-0AA0, requires a specific mounting kit.