Circuit breaker, for 12/24 volt dc systems. Thermal bimetallic with manual re-set. Will replace standard blade fuses in many fuseholders and boxes. Type: Circuit breaker Voltage: 12/24 volt dc (max 32 volt dc) Voltage drop: Current ratings: 20 amp Short circuit breaking capacity: 300 operations at ≤ 50 amp ≥3 operations at 150 amp ≥1 operation at 2000 amp Degree of protection (IP): Operating area IP30, terminal area IP00 Vibration: 10g (57-500 Hz) Shock: 50g (11ms) Operating temperature: -40˚C to +85˚C Humidity: 95% RH Weight: 5g Dimensions: 20 x w 6 x h 38 (inc blades and trip extended)