Siemens Thermal Overload Relay, 47 to 57 A, 50 to 60 Hz Frequency, 690 V AC Coil, 1NO-1NC 1 Form A/1 Form B Contact Form, 3 A at 24/110/120/125 VAC, 2 A at 230 VAC, 1 A at 400 VAC, 2 A at 24 VDC, 0.3 A at 60 VDC, 0.22 A at 110/125 VDC, 0.11 A at 220 VDC Contact, 3 Pole, Contactor Mounting, Screw Terminal, IP00/IP20 Enclosure, -40 to 60 deg C, 90 mm H x 55 mm W x 105 mm D Dimensions