Evaluate Breaker Performance with Three-Phase Timing Tests

Confirm proper breaker speed and clearing times for all types of circuit breakers with the CBT-1203 circuit breaker timer test set.

Capture and Store Performance Data for Any Circuit Breaker

CBT-1203 circuit breaker timer unit front

The CBT-1203 circuit breaker timer confirms proper breaker speed and clearing times as part of a maintenance program or arc-flash validation study. The test set performs three-phase timing tests, charges spring-charged circuit breakers, opens/trips and closes breakers, and captures and stores millisecond trip and close times and duration of contact bounce.

  • Operate and interact with all types of circuit breakers
  • Digital timer captures breaker trip, close, and bounce times
  • Integrated variable 120 VAC/125 VDC power supply for charging breakers outside of cubicles
  • Distributes other voltages from an external variable power supply
  • Switching to open/trip and close a breaker

  • Breaker switching controls and custom breaker-specific operation plugs provide simple, fast connection to the breaker
  • Large back-lit LCD display viewable in sunlight and low-light conditions
  • Compact, lightweight, rugged design suitable for field and shop use

Custom Breaker-Specific Operation Plugs Simplify Connection

This is a self-contained, multi-use test set designed to operate and interact with all types of circuit breakers. Incorporating a digital timer to capture and store trip/open, close and bounce times, it can store test results in its internal memory.  

It is a portable unit with an integrated variable power supply (120 VAC/125 VDC) for charging spring-charged circuit breakers outside of cubicles and switching to trip and close the breaker. Also included are provisions to accept and distribute other voltages from an external variable power supply.  

Included is a unique, pre-wired, universal 12-foot cable assembly, which provides simple, fast connection to the circuit breaker under test. In addition to a universal cable set, the CBT-1203 can be provided with custom breaker-specific operation plugs to further simplify connection to the breaker. 

CBT-1203 contact cable

Contact cable

CBT-1203 control power cable

Control/power cable

CBT-1203 universal cable set

Universal cable set

Contact clamps

Optional breaker-specific operation plugs for fast and easy setup

The charging power supply and breaker trip/open and close switching of this circuit breaker timer are frequently used when working on a breaker even when the timer function is not required. The compact, lightweight, and rugged CBT-1203 circuit breaker timer is ideally suited for both field and shop use.

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