AT-10 Converting 208V or 480V to 240V for Primary Injection Testers

Operate your ETI PI-1600 or PI-800 circuit breaker testers at full-capacity on either 208 or 480 VAC supplies.

ETI’s AT-10 autotransformer converts 208V and 480V lines to 240V outputs. This portable autotransformer allows ETI’s PI-1600 or PI-800 circuit breaker testers to be used at full-capacity on either input voltage. The unit provides 240VAC at 10kVA, and also an isolated 120VAC 500VA supply for lights, hand tools, and other small appliances. It is housed in a rugged ABS enclosure approximately 22″ x 11″ x 20″, and weighs less than 100 lbs.


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
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