CHH3125 - 125Amp Circuit Breaker

CHH3125 - 125Amp Circuit Breaker

The CHH3125 125 Amp molded case circuit breaker is the type of component you’ll typically find in an existing CHH-series electrical system where the equipment is already in place and the goal is simply to keep things consistent. In most cases, it’s used for direct replacement work—swapping out a breaker with the same ratings and footprint so the panel stays unchanged and the system continues running the way it was originally set up.

The 100kA interrupting rating at 240VAC reflects applications where fault current levels are already known and accounted for in the original system design.

This model uses a non-interchangeable trip unit, meaning the protection settings are fixed from the factory. There’s nothing to adjust or configure in the field, which helps keep replacement work straightforward and reduces variation when installing like-for-like components.

Like many molded case circuit breakers used in established electrical systems, it’s intended for use in properly maintained equipment and is built to last under normal operating conditions.

Key Features & Benefits

• 125 Amp, 3-pole molded case circuit breaker
• Designed for CHH-series electrical systems already in service
• Used in 240VAC three-phase applications
• 100kA interrupting rating at 240VAC
• Non-interchangeable trip unit with factory-set protection
• Direct replacement for compatible installed breakers
• Maintains original panel layout and electrical footprint
• Common in commercial and industrial maintenance environments

Technical Specifications

• Part Number: CHH3125
• Product Type: Molded Case Circuit Breaker
• Type: CHH
• Amperage Rating: 125 Amps
• Poles: 3
• Voltage Rating: 240VAC
• Interrupting Rating: 100kAIC @ 240VAC
• Trip Unit: Non-Interchangeable
• Dimensions: 4.13 in W x 7.50 in H x 3.06 in D
• Approx. Shipping Weight: 8.5 lbs

Material Compliance and Certifications

• The CHH3125 is intended for use in listed electrical distribution systems where matching breaker type, ratings, and physical configuration is required. Installation should always be performed by qualified electrical personnel in accordance with applicable electrical codes and safety standards.

Where It Works Best

• Existing CHH-series panelboards and switchgear
• 240VAC three-phase distribution systems
• Commercial and industrial electrical installations
• Motor and feeder circuit protection
• Maintenance and like-for-like breaker replacement work
• Facilities with established electrical infrastructure
• Systems requiring a fixed 125 Amp, 3-pole breaker