Square D, HDL36040, 3-Pole Molded Case Circuit Breaker, 80% Rated Type HDA, Series: HDL, 600 V AC/250 V DC, 40 A, 50/60 Hz Frequency, 14 to 20 kA Interrupt, H Frame, Thermal Magnetic Trip, 400 to 850 A Trip, 3 Pole, Line/Load Lug Connection, 14 to 3/0 AWG Wire, 104 deg F, 6.4 in H x 4.12 in W x 4.36 in D Dimensions