Westinghouse | J3125 | Circuit Breaker | 125A | 600V | 22kA | Bolt-On

Designed for maintenance, retrofit, and replacement projects, the Westinghouse J3125 circuit breaker is a dependable 125A, 600V bolt-on unit that protects electrical circuits while supporting streamlined panel upgrades. With a robust 22kA interrupting capacity, this breaker delivers strong fault-current protection in many commercial and light-industrial settings. Use the J3125 part number as your primary reference to ensure a precise fit and ratings before ordering.

Key specifications

• Amperage: 125 A
• Voltage: 600 V
• Interrupting capacity: 22 kA
• Mounting: Bolt-On
• Part number: J3125

What makes this breaker stand out

• Bolt-on convenience: Quick, secure installation that simplifies replacement and reduces panel downtime.
• High fault protection: 22kA interrupting capacity provides robust protection against short-circuit events in appropriate panel configurations.
• Clear compatibility signal: The J3125 designation is the best reference for ensuring you’re choosing the correct unit for your panel or gear.

Ideal use cases

• Maintenance work on panels that require a 125A, 600V bolt-on breaker with a 22kA rating.
• Retrofit projects where older gear needs upgrading to meet current protection standards without changing the panel layout.
• Replacement scenarios in existing equipment that specifies the J3125 part number for compatibility.

Installation and compatibility tips

Before you order, confirm that your panel accepts a 125A, 600V bolt-on breaker with a 22kA interrupting rating and that the mounting provisions match your enclosure. Rely on the J3125 part number as the most reliable cross-reference for achieving a precise fit and safe operation. If you’re updating an older system, verify that the panel’s labeling aligns with these specifications to maintain compliant protection for the circuit.