The ABB 50 Amp 2 in. Double-Pole Circuit Breaker has a dedicated calibration screw which is cemented to prevent shifting. The attached screw creates a stable calibration for optimum performance. The unit has tin-plated copper stabs to create reliable, permanent and corrosion-resistant connections. The case is made of heat-resistant thermoset for stability and structural integrity.. AIC Rating: 10000. Breaker Type: Standard. Connection Type: Non-Neutral. Interruption Type: Standard Trip. Maximum Amperage (A): 50 A. Mounting Type: Plug-On. Number of Poles: Double. Number of Spaces: 2. Pack Size: 1. Power Distribution Features: No Additional Features. Product Weight (lb.): .7 lb. Returnable: 90-Day. Series Type: Not Specified. Trip Unit: Thermal Magnetic. Voltage (V): 240 V. Certifications and Listings: UL Listed. Product Depth (in.): 3 in. Product Height (in.): 3 in. Product Width (in.): 3.375 in. Maximum Amperage (A): 50 A. Breaker Type: Standard. Interruption Type: Standard Trip. Series Type: Not Specified. Mounting Type: Plug-On. Number of Poles: Double. Connection Type: Non-Neutral. Voltage (V): 240 V