Siemens B34500S01 Miniature Circuit Breaker

This bolt-on breaker is designed for use in Siemens P1, P2, P3, P4, and P5 panelboards. It mounts directly to the busbar, providing a secure, vibration-resistant connection for commercial and industrial power distribution.

No, the B34500S01 features a bolt-on connection designed specifically for commercial panelboards like the Siemens P1 through P5 series. It is not compatible with plug-on residential load centers.

The 00S01 suffix designates that this breaker includes a factory-installed 120VAC shunt trip. This allows for remote tripping of the breaker, which is often required for emergency shutdown systems or automated control circuits.

The B34500S01 is specifically built with a 120VAC shunt trip for remote operation. If your application does not require remote tripping capabilities, a standard B345 breaker without the 00S01 suffix is the correct direct replacement.

The fixed thermal-magnetic trip unit provides dual protection. The thermal component responds to sustained overloads using a bimetallic strip, while the magnetic component provides instantaneous tripping during short-circuit faults to protect downstream equipment.

Yes, this breaker is HACR rated, meaning it is certified for use with heating, air conditioning, and refrigeration equipment that requires specialized overcurrent protection.

The standard lugs accept 8 to 6 AWG copper wire or 8 to 4 AWG aluminum wire. Ensure proper torque specifications are followed during installation to maintain a secure connection and prevent overheating at the terminals.

The B34500S01 has a maximum interrupting rating of 10kAIC at 240VAC. If your system requires a higher fault current rating, you will need to source a breaker with a higher AIC capacity, such as the Siemens BLH (22kAIC) or HBL (65kAIC) series.