BQ2B125H - 125Amp Circuit Breaker

BQ2B125H - 125Amp Circuit Breaker

The Siemens BQ2B125H is a 125-amp, 2-pole molded case circuit breaker designed for use in 120/240V electrical distribution systems. It provides overcurrent protection for your branch and feeder circuits and features a common-trip mechanism that opens both poles during an overload or short-circuit condition. As part of the Siemens BQH series, this breaker is rated for applications requiring a higher interrupting capacity than standard BQ models.

The BQ2B125H utilizes a bolt-on connection and includes factory-installed load-side lugs. With a 22 kA interrupting rating, it is commonly specified for commercial buildings, multifamily properties, schools, office facilities, retail spaces, and light industrial environments. Typical applications include panelboards, load centers, feeder circuits, branch circuits, HVAC equipment, and electrical distribution systems operating on 120/240V power.

Key Features and Benefits

• 100 amp continuous current rating
• 2-pole common-trip configuration
• Rated for 120/240 VAC systems
• 22 kA interrupting capacity (AIR)
• Bolt-on mounting design
• Factory-installed load-side lugs
• Molded case circuit breaker construction
• Suitable for branch and feeder circuit protection
• Designed for electrical distribution applications

Technical Specifications

• Catalog Number: BQ2B125H
• Manufacturer: Siemens
• Product Series: BQH
• Product Type: Molded Case Circuit Breaker
• Ampere Rating: 125 Amps
• Number of Poles: 2
• Trip Configuration: Common Trip
• Voltage Rating: 120/240 VAC
• Interrupting Rating (AIR): 22 kA
• Electrical Connection Type: Bolt-On
• Included Features: Load-Side Lugs
• Suitable For: Electrical Distribution
• Depth: 3 in.
• Width: 2 in.
• Height: 4 in.
• Net Weight: 0.35 kg
• Country of Origin: Mexico

Material Compliance and Certifications

• The Siemens BQ2B125H is UL 489 listed for use in low-voltage electrical distribution systems. It is manufactured to meet recognized industry requirements for circuit breaker safety and performance when installed according to applicable electrical codes and manufacturer specifications.

Where It Works Best

• The BQ2B125H is commonly installed in panelboards, load centers, feeder circuits, branch circuits, HVAC systems, and electrical distribution equipment.