Gardner Bender CS550A Circuit Breaker Finder

Product Description

The GARDNER BENDER CS550A is a circuit breaker finder designed to locate AC breakers and fuses in residential and commercial electrical panels without interrupting power to the circuit. The transmitter plugs into any standard outlet and sends a signal through the branch circuit wiring. The included receiver is then swept across the breaker panel to identify the corresponding breaker or fuse. Rated for 80 to 140 VAC maximum to ground, the CS550A is UL listed to both US and Canadian standards, making it a reliable tool for licensed electricians and experienced electrical contractors.

The CS550A is suited for residential and light commercial applications where a technician needs to map circuits quickly without shutting down loads. It is commonly used during panel labeling, tenant buildouts, service calls, and renovation work where existing circuits are unlabeled or mislabeled. The automatic signal detection simplifies the identification process and reduces the time spent tracing circuits manually.

Key Features

• Locates AC breakers and fuses without interrupting power to the circuit
• Operates within 80 to 140 VAC maximum to ground
• Automatic receiver signal detection for faster circuit identification
• UL listed to both US and Canadian electrical standards
• Compact transmitter plugs directly into a standard outlet - no additional connections required

Compatibility

Designed for use with standard residential and light commercial AC breaker panels and fuse boxes operating within the 80 to 140 VAC range.

Installation Notes

This tool is intended for use by qualified electricians familiar with panel work and electrical safety practices. Although the CS550A does not require power interruption to the circuit being traced, always follow NFPA 70 (NEC) safety guidelines when working near energized panels. Keep the panel cover in place where possible and avoid contact with exposed bus bars or terminals during use. Inspect the transmitter and receiver for damage before each use.