Square D 9421LCP48 Circuit Breaker Handle Assembly

Product Description

The SQUARE D 9421LCP48 is a door-mounted circuit breaker handle assembly designed for use with PowerPact circuit breakers and 9421LW7 operating mechanisms. This assembly provides the mechanical interface for operating a circuit breaker through a panel or enclosure door, allowing techs to trip, reset, or lock out a breaker without opening the enclosure. It is used in industrial and commercial electrical distribution panels where door-mounted operator handles are required for safe, code-compliant breaker operation. The assembly ships as a single unit and weighs 2.6 pounds. Licensed electricians and panel builders are the primary installers of this component.

The 9421LCP48 is suited for commercial and industrial electrical installations where PowerPact circuit breakers are mounted inside enclosed panels or switchgear. A common application is any installation requiring an external handle to operate a breaker through a panel door, keeping the enclosure closed during normal operation and lockout-tagout procedures. It is compatible with door-mounted mechanism assemblies that require a handle interface on the exterior of the enclosure door.

Key Features

• Door-mounted design allows breaker operation without opening the enclosure
• Compatible with 9421LW7 operating mechanisms and PowerPact circuit breakers
• Supports lockout-tagout procedures at the panel exterior
• Packaged as a single unit for direct replacement or new installation
• Compact profile at 4.2 inches tall, 6.5 inches wide, and 8.6 inches long

Compatibility

Designed for use with 9421LW7 operating mechanisms, door-mounted mechanisms, and PowerPact circuit breakers as specified by the manufacturer.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and any applicable local codes. De-energize and verify the absence of voltage at the panel before beginning installation or removal of the handle assembly. Confirm the operating mechanism model is compatible before mounting. Follow manufacturer torque and alignment guidance provided with the assembly documentation.