B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker
B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker
B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker
B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker
B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker
B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker
B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker
B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker
B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker
B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker
B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker
B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker
    B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker
    B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker
    B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker
    B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker
B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker
B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker
B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker
B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker

B2125 | Siemens BL Series 125A 2-Pole 240V Bolt-On Molded Case Circuit Breaker

Part #: B2125 Manufactured by: Siemens
Regular price
$117.00
Sale price
$117.00
Regular price
2 in Stock
Condition: New-Surplus Original Box
Shipping calculated at checkout.
Product Overview
The B2125 is a Siemens circuit breaker rated at 125 amps and 240 volts. It features a two-pole configuration suitable for ...  Read more
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Product Description P/N: B2125

Description / Specifications

Description 

The Siemens B2125 is a 125 A, 2-pole molded case circuit breaker designed for 120/240 VAC single-phase electrical systems. It provides thermal magnetic protection for panel-mounted branch circuits in residential, commercial, and light industrial power distribution.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Siemens
Category Circuit Breaker
Part Number B2125
Subcategory Molded Case Circuit Breaker
Type Type BL Low Voltage
Voltage Rating 120/240 VAC
Amperage Rating 125 A
Frequency Rating 60 Hz
Interrupt Rating 10 kA
Frame BL
Trip Type Thermal Magnetic
Number of Poles 2
Phase 1
Actuator Type Toggle
Connection Type Bolt-On
Wire Size 2 to 1/0 AWG, 1/0 to 2/0 AWG
Mounting Type Panel
Temperature Rating 40°C
Dimensions 3 in L × 3 in W × 2 in H

 

 

Information About B2125

The B2125 is a BL Series low-voltage circuit breaker developed for Siemens panelboard systems requiring bolt-on mounting. Its molded case design incorporates a fixed thermal magnetic trip unit that ensures predictable operation during overload and short-circuit conditions. The breaker integrates directly with BL-frame panels, providing secure electrical connections and mechanical stability. Typical applications include residential, commercial, and light industrial distribution panels where CSA and UL certified protection devices are required.

Key Features:

  • BL Series Compatibility: Designed specifically for Siemens BL-frame panelboards to ensure correct fit and electrical integration.
  • Thermal Magnetic Protection: Provides inverse-time overload protection and instantaneous short-circuit interruption.
  • 10 kA Interrupt Rating: Capable of safely clearing fault currents in low-voltage power systems.
  • Bolt-On Connection Method: Ensures reliable conductor termination with reduced contact resistance.
  • Two-Pole Configuration: Supports single-phase 120/240 VAC circuits with simultaneous disconnection.
  • Molded Case Construction: Enhances durability, insulation, and resistance to mechanical stress.
  • Panelboard Mounting Design: Allows straightforward installation and replacement within standard panels.

The B2125 delivers the reliability and precision required for protecting low-voltage branch circuits and power distribution equipment.

IQElectro is not an authorized distributor.
IQElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description 

The Siemens B2125 is a 125 A, 2-pole molded case circuit breaker designed for 120/240 VAC single-phase electrical systems. It provides thermal magnetic protection for panel-mounted branch circuits in residential, commercial, and light industrial power distribution.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Siemens
Category Circuit Breaker
Part Number B2125
Subcategory Molded Case Circuit Breaker
Type Type BL Low Voltage
Voltage Rating 120/240 VAC
Amperage Rating 125 A
Frequency Rating 60 Hz
Interrupt Rating 10 kA
Frame BL
Trip Type Thermal Magnetic
Number of Poles 2
Phase 1
Actuator Type Toggle
Connection Type Bolt-On
Wire Size 2 to 1/0 AWG, 1/0 to 2/0 AWG
Mounting Type Panel
Temperature Rating 40°C
Dimensions 3 in L × 3 in W × 2 in H

 

 

Information About B2125

The B2125 is a BL Series low-voltage circuit breaker developed for Siemens panelboard systems requiring bolt-on mounting. Its molded case design incorporates a fixed thermal magnetic trip unit that ensures predictable operation during overload and short-circuit conditions. The breaker integrates directly with BL-frame panels, providing secure electrical connections and mechanical stability. Typical applications include residential, commercial, and light industrial distribution panels where CSA and UL certified protection devices are required.

Key Features:

  • BL Series Compatibility: Designed specifically for Siemens BL-frame panelboards to ensure correct fit and electrical integration.
  • Thermal Magnetic Protection: Provides inverse-time overload protection and instantaneous short-circuit interruption.
  • 10 kA Interrupt Rating: Capable of safely clearing fault currents in low-voltage power systems.
  • Bolt-On Connection Method: Ensures reliable conductor termination with reduced contact resistance.
  • Two-Pole Configuration: Supports single-phase 120/240 VAC circuits with simultaneous disconnection.
  • Molded Case Construction: Enhances durability, insulation, and resistance to mechanical stress.
  • Panelboard Mounting Design: Allows straightforward installation and replacement within standard panels.

The B2125 delivers the reliability and precision required for protecting low-voltage branch circuits and power distribution equipment.

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