ETI is highly responsive to our requests for support, all it takes is a short email and we’re quickly talking to an engineer who knows the product and our applications inside and out. ETI products are intuitive and robust, and their technical team is ready to help make each client successful.



ETI manufactures the most reliable and intuitive high-current circuit breaker testers on the market. With our products, your team is equipped with reliable testing with the tools to keep your mission critical equipment reliable and running, shortening equipment downtime and increased productivity and throughput.

Circuit Breaker Testers


Rugged primary injection tester rated for 6,000A circuit breakers. Runs on 208-240 or 480VAC.

PI-5000 Gen2

Portable and modular unit for testing 4,000A circuit breakers, maneuverable in tight spaces.

PI-2500 Gen2

Mobile high-current tester for circuit breakers rated up to 2,000 amps. Runs on 208/240 and 480 VAC.

PI-1600 Gen2

Portable, modular, and durable primary injection tester rated for 1,600A circuit breakers. Runs on 208-277VAC.

PI-800 Gen2

Powerful tester for circuit breakers rated up to 800 amps. Extremely portable and modular design for one-person mobility.

PI-250 Gen2

Small yet powerful high-current test set capable of generating up to 1,000A. Runs on 120 VAC.

Power Supplies


Versatile and intuitive 10-amp AC and DC variable power supply.


Compact and powerful 20-amp AC and DC variable power supply.


PI-1600 Accessories Case

Carrying case for easy organization and management of PI-1600 accessories.

Adjustable Test Stab Set

Adjustable test stabs for maximum flexibility when testing circuit breakers.


An advanced self-contained microprocessor-based metering and control package for primary injection circuit breaker testers.


Autotransformer for converting 208V or 480V outputs to the standard 240V.


Step-down transformer for converting 480V outputs to the standard 240V.