Circuit breaker and fuse ratings

All power connections between the VCM100 and its power source must be protected by a thermal circuit breaker or fuse, fitted close to the power connection. The connection from the output of the VCM100 to the digital Radar does not require a fuse or circuit breaker.

If you do not have a thermal circuit breaker or fuse in your power circuit (fitted to the DC distribution panel, for example), you MUST fit an in-line breaker or fuse to the positive wire of the power cable.

The following table provides suitable ratings for battery isolator switches, circuit breakers, and fuses.

Power supply	Protection	4kW scanner	12kW scanner
12 V	Isolator switch	30 A (minimum rating)	30 A (minimum rating)
	Thermal breaker	15 A	15 A
	Fuse	20 A	20 A
24 V	Isolator switch	15 A (minimum rating)	15 A (minimum rating)
	Thermal breaker	8 A	8 A
	Fuse	10 A	10 A