Siemens B34500S01 Molded Case Circuit Breaker – BL Series – 45A – 3 Pole – 240V – 10kAIC – Bolt-On – 120V Shunt Trip

The Siemens B34500S01 is a BL Series molded case circuit breaker designed for reliable overcurrent protection in commercial and industrial electrical distribution systems. This 45A, three-pole breaker delivers dependable thermal magnetic protection with fixed Long-Time and Instantaneous trip functions, ensuring safe operation under overload and short-circuit conditions.

It is designed for bolt-on installation in Siemens P1 through P5 panelboards and includes a factory-installed 120VAC shunt trip for remote tripping capability. The breaker is HACR rated and suitable for HVAC and general power distribution applications requiring dependable circuit protection.

Specifications

• Brand: Siemens
• Manufacturer: Siemens Breakers
• Part Number: B34500S01
• Series: BL
• Amperage: 45A
• Number of Poles: 3 Pole
• Phase: 3 Phase
• Voltage Rating: 240VAC
• Interrupting Capacity: 10kAIC @ 240VAC
• Mounting Style: Bolt-On
• Terminal Type: Lugs

Electrical & Protection Features

• Trip Technology: Thermal Magnetic
• Trip Function Code: LI (Long-Time, Instantaneous)
• Trip Adjustability: Fixed Thermal, Fixed Magnetic
• Shunt Trip: 120VAC (factory installed)
• Protection: Overload and short-circuit protection

Wiring Information

• Wire Range (Copper): 8–6 AWG
• Wire Range (Aluminum): 8–4 AWG
• Max Wire: 6 AWG (Cu), 4 AWG (Al)
• Min Wire: 8 AWG

Compatibility

• For Use With: Siemens P1, P2, P3, P4, P5 panelboards
• Mounting: Bolt-on

Technical Features

• Factory-installed 120VAC shunt trip for remote operation
• HACR rated for HVAC applications
• Compact miniature molded case design
• Reliable thermal magnetic protection system
• Secure lug-type termination for copper and aluminum wiring
• Durable construction for industrial environments

Standards and Approvals

• UL 489
• CSA C22.2 No. 5
• CSA Approved
• HACR Rated

Applications

• Commercial electrical distribution systems
• Industrial power panels
• HVAC equipment circuits
• Motor and compressor protection
• Branch and feeder circuit protection
• Building automation systems
• Emergency shutdown and control systems

Returns are easy

You may return items within 30 days of delivery for a refund.

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