Heavy-Duty Battery Switch – Black Polycarbonate Body (280A)

Engineered for high current applications, this heavy-duty battery switch features a black polycarbonate housing that is extremely tough and UV-resistant. It is a two-position ON/OFF switch primarily used to isolate a single battery or act as a master disconnect for all electrical power. Capable of carrying 280A continuously and withstanding surges up to 2500A (5 seconds), it can easily manage the demands of large inboard engines or multiple outboards starting simultaneously. The switch mounts via a square flange (approx. 69x69 mm) with four screws, and the activation knob protrudes for easy access. Unlike removable-key switches, this model has a fixed rotary knob (often with an integrated on/off label or “1/0” graphic) that cannot be lost – ideal for applications where permanent attachment is preferred. The knob’s design is ergonomic to provide a firm grip for turning under load. When switched off, a rubber O-ring seal and the provided watertight PVC cap protect the internal mechanism from water – this switch is fully ignition protected and can be installed in gasoline engine compartments. The internal contacts are heavy copper alloy, ensuring minimal voltage drop and heat generation even at high currents. For installation, a standard cutout and two mounting holes are used if flush mounting (or it can surface mount with its low profile body). This switch adheres to CE requirements and ISO 8846 Marine standards, guaranteeing safe operation in marine environments. It’s frequently chosen as the primary battery cut-off on commercial vessels, off-road vehicles, and backup generator systems thanks to its reliability. If needed, a spare key or handle for similar models (Osculati part no. 14.386.34) can be acquired, although this particular model’s knob is fixed. Choose this black polycarbonate heavy-duty switch for a rugged, high-capacity battery disconnect that will endure the harsh marine conditions and provide peace of mind when powering down your electrical system.