250A Continuous 360A Intermittent 32V DC Battery Isolator Switch Marine Battery Disconnect Switch ON-OFF

When a fleet has more than a handful of boats or vehicles, consistency saves time. The MT054 is designed to be the one master switch fitted across that fleet: yellow housing, two positions, 250 amps continuous, 360 amps for short bursts, and a 32 volt ceiling that covers both 12V and 24V systems.
The value is not just electrical. A single recognisable switch means a new crew member can be shown the isolation point once and will recognise it on every other unit in the fleet. That reduces the chance of someone hunting through a panel while water is coming in, or leaving a boat energised when it should be dead.
Mechanically it is a standard rotary isolator: ON closes the circuit, OFF breaks it, and both extremes have a positive stop so the dial cannot rest between positions. Studs take conventional ring lugs, and the flat flange mounts to panels, bulkheads and locker walls.

• Mark the switch body or adjacent panel with a plain "MASTER" label in the operator's language.
• Add an arrow pointing to the OFF direction, so isolation does not depend on memory.
• Record the switch location in the vessel or vehicle handover sheet.
• Photograph the panel after installation and keep the image in the maintenance file.
• Brief every new operator on the location before their first trip.

1. Set the dial to OFF and disconnect the battery negative lead before starting.
2. Confirm the circuit is dead at both studs using a meter.
3. Choose a flat surface where the dial turns freely and cable can bend without strain.
4. Drill the flange holes, then fasten the housing down evenly.
5. Battery positive to one stud, distribution or starter feed to the other.
6. Crimp closed ring lugs, torque both nuts, cycle the dial once, then reconnect and test.

• Minimum order — 5 pcs.
• Price — negotiable, quoted against quantity and packing requirements.
• Capacity — 50,000 pcs per month.
• Lead time — 30 days for standard production.
• Payment — T/T or Western Union; 30% deposit with the balance before shipment.
• Packing — neutral white box inside a brown carton; branded packing available with written trademark authorisation.