Square D QOM2125VH Main Circuit Breaker (QO Series)

Overview

The QOM2125VH is a 2-pole, 125A thermal-magnetic main circuit breaker from Square D’s QO series. Designed for residential and light commercial applications, it offers reliable overcurrent protection for 120/240V single-phase systems. With a high interrupting capacity of 22 kAIC, it ensures safety and durability in demanding environments.

Key Specifications

• Amperage Rating: 125A

• Voltage Rating: 120/240V AC

• Number of Poles: 2

• Interrupting Capacity: 22,000 AIC at 240V

• Mounting Type: Bolt-on

• Trip Mechanism: Thermal-magnetic (long-time and instantaneous)

• Wire Size Compatibility: 4 AWG to 300 kcmil (copper or aluminum)

• Terminal Type: Box lugs

• Frame Size: QOM2 (3/4" width)

• Dimensions: Height: 5.6", Width: 3.6", Depth: 3.6"

• Operating Temperature: Up to 40°C (104°F)

• Certifications: UL Listed, CSA Certified

• Diagnostic Feature: VisiTrip indicator for visible trip status

Benefits

• High Capacity Protection: Handles up to 125A with a 22 kAIC interrupting capacity, suitable for large residential or light commercial loads.

• Compact Design: The QOM2 frame size allows for a smaller panel footprint, maximizing available space for additional circuits.

• Easy Installation: Bolt-on mounting ensures secure and straightforward installation in compatible load centers.

• Enhanced Safety: The thermal-magnetic trip mechanism provides reliable protection against overloads and short circuits.

• Diagnostic Clarity: The VisiTrip indicator offers a clear visual cue when the breaker has tripped, simplifying maintenance and troubleshooting.

Typical Applications

• Main breaker in QO or Homeline load centers

• Subpanel or feeder breaker for high-demand circuits

• Circuits powering HVAC systems, water heaters, or other large appliances

• Electrical panel upgrades requiring higher amperage capacity