PI-6000 A Powerful & Intuitive Circuit Breaker Tester

The PI-6000 is a versatile primary injection tester capable of testing circuit breakers up to 6,000 amperes frame size. Its primary applications are for testing low-voltage molded-case and metal-clad AC circuit breakers. The unit may also be used for high-current applications such as ratio transformers and heat runs. The PI-6000 runs on 208-240VAC and 480VAC. The tester has been designed and built with a focus on reliability, durability, and ease-of-use.


The PI-6000 is a rugged & durable primary injection test set capable of testing circuit breakers up to 6,000 amperes frame size. It incorporates an output transformer with dual primaries to facilitate its use on power sources of 480 VAC as well as 208-240 VAC. The unit also includes dual secondaries to provide optimal impedance matching to a wide range of circuit breaker sizes. An internal voltage sensor automatically configures the AC control power section to be energized only when properly configured for the applied voltage.

The PI-6000 is constructed in a rugged steel enclosure with removable sides and top for easy access to internal components. The sides are clear of protruding components and full-width handles with provisions for lifting hooks are on both ends. Locking swivel castors on all four corners provide ease of mobility. The entire test set has been designed for reliability, ruggedness, and ease of use.

The advanced MAC-21 controller provides industry-leading accuracy and convenience for testing. The unique manual / motorized vernier design increases your test reliability and productivity. The vernier position is displayed on an LED indicator bar graph.

The PI-6000 also features temperature protection for both the output bus and the vernier Powerstat™. If either temperature exceeds a safe operating level, the interlock trips and the output section is de-energized. Primary catastrophic overload protection for the test set is accomplished with input fuses having high interrupting current capacity.


This test set will test low-voltage molded-case and metal-clad AC circuit breakers from various manufacturers. The test set can also be used on high current applications like ratio transformers and heat runs. Using SCR’s, the PI-6000 eliminates closing time errors. Initiation at the zero crossover point eliminates DC offset in the current waveform and results in accurate, repeatable test results even with short-duration currents for high-speed solid state or electro-mechanical trip devices.

Highlighted Features

Serial port: This standard serial port may be connected to a printer, computer, or other device to print or store time and current values of test results in ASCII format. It is set for 9600 baud, 8 bits, 1 stop bit, no parity. This interface enables you to download data into various computer software programs.

Initiating Control: The advance initiate circuitry provides both pulse preset modes for cycles or seconds for output duration. The pulse mode automatically pulses the output to any preset programmed duration. This provides additional testing capabilities for electro-mechanical and solid state trip devices. A short preset pulse duration also allows for instantaneous tripping without preheating the breaker under test. A long preset time can used for heat runs on cables or other devices up to maximum 9999 seconds.

Zero DC Offset: Use of digitally controlled SCR’s instead of a contactor to initiate the output of the test set eliminates closing time error and thereby ensures precise initiation at the zero crossover point of the output current waveform every time. Initiation at the zero crossover point ensures symmetrical output current by eliminating DC offset in the current waveform. Therefore accurate, repeatable test results are assured even with currents of very short duration, as when conducting tests of instantaneous or short delay trips.

Output Current & Overload Capabilities