A convenient means of adding fused circuits to power accessories or auxiliary loads.Each pole has its own 1/4 male quick-connect isolated terminals (power is not provided by a common bus).These blocks feature a back plate for additional safety and electrical isolation.The clear cover has an O-ring seal to help keep out contaminants and makes it easy to inspect fuses (fuses not included).15A per circuit.Operating environment:-40°C to 105°C (-40°F to 221°F), 95% RH non-condensing.Uses two 5.5mm mounting holes for M5 (10) screws.