Amperage: 30a. Weatherproof. Can be used as main, branch, or 24 hour circuit protection. Compact design enables high density circuit protection configurations. Push-to-reset operation. ""trip free"" design cannot be held ""on"" during fault current condition. Ignition protected - safe for installation aboard gasoline powered boats. Captive star lock washers meet requirements for anti-rotation and eliminate handling of small, easily dropped parts. compact design enables high density circuit protection configurations. trip free design cannot be held on during fault current condition. push-to-reset operation. box dimensions 2h x 3w x 7l. weight 0.2 lbs.