Siemens B145 - Molded Case Circuit Breaker 45A 1P 240V
Siemens B145 - Molded Case Circuit Breaker 45A 1P 240V
Siemens B145 - Molded Case Circuit Breaker 45A 1P 240V
Siemens B145 - Molded Case Circuit Breaker 45A 1P 240V
Siemens B145 - Molded Case Circuit Breaker 45A 1P 240V
Siemens B145 - Molded Case Circuit Breaker 45A 1P 240V
Siemens B145 - Molded Case Circuit Breaker 45A 1P 240V
Siemens B145 - Molded Case Circuit Breaker 45A 1P 240V

Siemens B145 - Molded Case Circuit Breaker 45A 1P 240V

Siemens
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Siemens B145 is a molded case circuit breaker designed for reliable overcurrent protection in commercial and light industrial electrical systems. It features a 45A current rating and a 240V voltage rating, housed within a compact, bolt-on frame measuring 2.571" x 1.00" x 2.89" and weighing 0.309 lb. The breaker utilizes a thermal-magnetic trip mechanism providing both long-time and instantaneous (LI) protection, and it is certified to UL, CSA, HACR, and NOM standards for safety and interoperability. It is engineered for use in single-phase applications, typically within Siemens P1 panelboards, and offers a 10kA interrupting capacity at 240V for effective fault containment.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Bolt-on Connection
  • Voltage Rating: 240V AC
  • Current Rating: 45A
  • Dimensions: 2.571" H x 1.00" W x 2.89" D (65.3mm x 25.4mm x 73.4mm)
  • Standards: UL Listed, CSA Certified, HACR Rated, NOM Certified
  • Applications: Commercial and Light Industrial Panelboards
  • Switch Type: Circuit Breaker
  • Configuration: Single Pole
  • Frame Size: 125A/BL
  • Trip Type: Thermal-Magnetic
  • Panel Type: Siemens P1 Panelboards
  • Breaker Type: Standard
  • Phase: 1
  • AIC Rating: 10kA @ 240V
  • Connection: Bolt-on, Lug Terminal
  • Poles: 1
  • Protection: Overcurrent
  • Functions: Long-Time and Instantaneous Trip (LI)
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • MCM Size: Accepts 8 AWG (Min) to 4 AWG Aluminum or 6 AWG Copper Wire
  • Certification: UL, CSA, HACR, NOM
  • Circuit Breaker Mounting Style: Bolt-on
  • Terminal Connection: Lug
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Single Phase
  • Standards: UL 489, CSA C22.2 No. 5
  • Compatible Frames: Siemens BL Series
  • Installation Type: Fixed
  • Weight: 0.309 lb
  • Country of Origin: Mexico


Product Identification
  • UPC: 783643263475
  • GTIN: 00783643263475