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B250ST

Siemens
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Siemens B250ST Circuit Breaker - Molded Case Shunt Trip 50A 2-Pole (240V Bolt-On) The Siemens B250ST is a 2-pole molded case circuit breaker designed for overcurrent protection and remote tripping via its integrated shunt trip mechanism. This 50-amp, 240-volt breaker features a thermal magnetic trip unit for reliable overload and short-circuit response, with a 10kA interrupting rating at 240V. Weighing 0.1575 lb, it uses a bolt-on connection for secure mounting in Siemens P1 panelboards and is constructed for single-phase, 60 Hz applications. The B250ST is CSA certified, HACR rated, NOM certified, and UL listed, meeting rigorous industry standards for safety and performance. It is commonly deployed in commercial and industrial electrical distribution systems where remote disconnect capability is required.

Key Features & Specifications
  • Type: Molded Case
  • Family: BL Series
  • Country of Origin: Mexico
  • Weight: 0.1575 lb
  • Voltage Rating: 240V
  • Panel Type: Siemens P1 Panelboards
  • Poles: 2
  • Connection: Bolt-On
  • Standards: CSA Certified, HACR Rated, NOM Certified, UL Listed
  • Certification: CSA Certified, HACR Rated, NOM Certified, UL Listed
  • AIC rating: 10kA@240V
  • Breaker Type: Shunt Trip
  • Phase: 1
  • Current Rating: 50A
  • Amperage: 50 A
  • Voltage: 120/240 VAC
  • Mounting Type: Bolt-On
  • Interrupt Rating: 10 kA
  • Series/Frame: BL Type
  • Trip Unit: Thermal Magnetic
  • Frequency: 60 Hz