ABB FORMULA, A1N100TW, Molded Case Circuit Breaker, Low Voltage Normal Interrupt, 240 VAC, 250 VDC, 100 A, 50/60 Hz Frequency, 10/25 kA Interrupt, A1N Frame, Thermal Magnetic Trip, 100 to 1000 A Trip, 3 Pole, Front Connection, DIN Rail/Fixed Mounting, -13 to 158 deg F, 5.12 in H x 3 in W x 2.36 in D Dimensions