B120H – SIEMENS 1P20A 120V BOLT ON 22kA BREAKER

The B120H uses a bolt-on mounting style, so it is designed for Siemens/ITE panelboards that accept bolt-on breakers — not plug-in loadcentres like the Siemens EQ or PL series. If you're unsure whether your panel takes bolt-on breakers, send us the panel model number and we'll confirm the fit.

Yes — the B120H is a current Siemens offering that is generally compatible as a direct replacement for other Siemens/ITE 1-pole 20A bolt-on breakers of the same frame. Always verify that the ampere rating, voltage, and interrupt rating meet or exceed the original breaker's specifications before installing.

The 22kA rating means the breaker can safely interrupt a fault current of up to 22,000 amperes without failing. This is particularly important in commercial or higher-capacity residential panels where available fault current can be elevated. Canadian Electrical Code (CEC) requires that breakers be rated at or above the available fault current at the point of installation — the B120H's 22kA rating satisfies most residential and light commercial installations.