Siemens NSB Q225 Miniature Circuit Breaker

Siemens NSB Q225 Miniature Circuit Breaker is a two-pole, 25-amp, 240-volt AC protective device in Siemens’ QP family, designed for plug-in installation in compatible NSB/QP panels and distribution boards. The Q225 designation identifies a 2P, 25A model with a 240 V operating rating and a common-trip mechanism that disconnects both poles together on overload or short-circuit events. As part of the QP line, this MCB provides reliable branch-circuit protection for circuits fed from 120/240 V systems in residential or light commercial electrical installations, delivering fast disconnection when fault conditions occur. Ideal for protecting individual branches such as lighting, outlets, or small appliance circuits within appropriate Siemens panel infrastructure, the NSB Q225 offers a compact, dependable solution that aligns with standard Siemens protective equipment for safe, code-compliant distribution.