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.



Our industry-leading high-current circuit breaker testers, AC/DC variable power supplies, and electrical test equipment are deployed at testing companies and within critical environments worldwide. We pride ourselves on extremely high levels of customer service and responsiveness – find out what it means to partner with ETI today.

Circuit Breaker Testers


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


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


Durable primary injection tester rated for 4,000A circuit breakers. Runs on 208-240 or 480VAC.


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


Portable, modular, and durable primary injection tester rated for 1,600A circuit breakers. Runs on 208-240VAC.


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


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.


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

ORTM-4 Recloser Testing System

The ORTM-4 system is a sophisticated recloser testing accessory used in conjunction with primary injection testing of oil and vacuum-type reclosers.

Electrical Test Instruments, LLC
D/B/A ETI Precision
8430 Spires Way, Suite A
Frederick, MD 21701

Phone: 410-857-1880
Fax: 410-857-1387
Email us

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