The TEyF 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 TEyF suitable for varied applications as a lug-lug breaker. All TEyF circuit breakers feature Quick-make / Quick-break mechanisms, common trip bars, and easy to spot trip indication to ensure safety and reliability. TEyF breakers are available in 1, 2, and 3 pole versions and can be ordered with auxiliary contact and shunt trip accessories. TEYF 3 POLE 25 AMP