Circuit protection in range: 30/40/50/60 ampsWiring: 8 gauge wire (or larger) User seletable circuit break-point is illuminated with high-brightness LEDUser selectable auto-resetting or manual reset modesDigital capacity measures voltage and current in real time to break the circuit at the exact user-selected settingCircuit interrupt LED to show when circuit is brokenDedicated reset buttonStackable for space optimizationCompletely sealed and waterproof3.6" L x 2.3" W