Siemens B25000S01 - 50 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens B25000S01, a robust 2-pole bolt-on molded case circuit breaker designed for dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. With a 50A rating and 240V operation, this device delivers reliable protection for residential, commercial, and light industrial electrical systems.

Why this Siemens breaker stands out

• Secure bolt-on mounting provides a rigid, vibration-resistant connection to the bus, delivering consistent interruption performance even in demanding environments.
• Thermal-magnetic trip unit combines overload protection with fast short-circuit clearance for stable, repeatable protection that minimizes nuisance trips while safeguarding the circuit.
• 2-pole, 50A, 240V design ensures simultaneous disconnection of both hot conductors, enhancing safety and compliance for 240V loads and multi-wire branch circuits.
• OEM loadcenter compatibility—engineered to mate with matching Siemens OEM loadcenters and panelboards, simplifying replacements and upgrades without compatibility concerns.

Ideal use scenarios

• Residential panelboards requiring reliable 50A, 2-pole protection for 240V appliances and multi-wire circuits.
• Commercial service panels and light industrial distribution where vibration resistance and a solid bus connection matter for long-term reliability.
• New installations or replacements within Siemens-based electrical systems, ensuring consistent protection alongside existing components.

What you gain with the B25000S01

• Precise protection: the thermal-magnetic mechanism provides predictable trip characteristics, helping you plan protection timing and minimize downtime.
• Durable construction: molded case design paired with bolt-on mounting yields a robust, maintenance-friendly assembly.
• Easy integration: straightforward installation in compatible panelboards and loadcenters, aligning with Siemens’ protection strategy for streamlined service and part replacement.

Technical snapshot

• Amperage rating: 50A
• Voltage rating: 240V
• Number of poles: 2
• Mounting style: Bolt-on
• Type: Thermal-magnetic molded case circuit breaker (MCCB)
• Part number: B25000S01