Contact resistance: 50 m Operating temperature range: -40 +70 °C Mechanical life: AC type: 10 x 10 6 times, DC type: 20 x 10 6 times Dimensions: H78.6 mm x W15.8 mm x D76 mm Replacement relays include part numbers 351-572, etc. (Finder 40 series), and select part numbers that match the original type in coil voltage, contact configuration, and rating.