TEY Moulded case circuit breaker for use with AE panels. 20 A, 277 VAC, 1-pole, 3-phase. Non-interchangeable trip style. LI trip function. Standard continuous current rated. Suitable for reverse feed. Fixed instantaneous and long time. HACR, HID special marking. 14 to 8 or 12 to 8 KCMIL wire range. The TEY is a one-inch wide per pole, compact, "bolt-on" circuit breaker for use on grounded 480Y/277 VAC systems. The bolt-on mounting base accessory makes the TEY suitable for varied applications as a lug-lug breaker. All TEY circuit breakers feature quick-make or quick-break mechanisms, common trip bars and easy to spot trip indication to ensure safety and reliability. Single-pole, 15 and 20 A breakers are also UL listed as switching duty breakers, suitable for switching 120, 240 or 277 VAC. UL listed HACR (Heating, air-conditioning, refrigeration). UL listed for HID (high intensity discharge), all 50 A or less.