Description

Overview

Battery master lockout switch 4 pole provides lockable battery isolation for trailers, trucks, buses and heavy vehicle electrical systems.

The 4 pole design can isolate both positive and negative battery sides, or it can isolate two separate circuits through one switch.

Features

• Heavy duty 4 pole lockable battery lockout switch.
• Supports power disconnection for service work, storage and security control.
• Silver laminated contacts suit high-current switching applications.
• Waterproof and dustproof housing carries IP67 protection.

Specifications and Materials

This battery master lockout switch 4 pole suits 6V to 36V DC electrical systems and carries a 125A continuous load rating.

The switch mounts through a 19mm diameter opening and operates from -40°C to +29°C.

Part number: HM7591S.

The manufacturer article number is 9MK 910 109-201, and the SAP number is 910.109-201.

manufacturer battery master switch guide

Compatibility and Fitment

Match this switch to the vehicle voltage, current load, circuit layout and panel mounting hole before ordering.

For service isolation, confirm whether the installation needs positive and negative battery isolation or two separate circuit isolation.

These cross-references show where this part replaces the part numbers and applications listed. Some installations may need minor changes. 9MK 910 109-201, 9MK910109201, 910.109-201, 910109201

Related Parts

Check the related service parts below against the trailer setup before ordering.

Compliance and Safety

Disconnect power before installation, then tighten all terminals and check the switch action before returning the vehicle to service.

Also keep the switch accessible for service personnel, but mount it where cable routing avoids heat, abrasion and moving parts.

Trailer Applications

Workshops fit this battery master lockout switch 4 pole to heavy trailers, truck bodies, buses and service vehicles that need a lockable battery isolation point.

It suits electrical service work where battery drain, tampering control and safe maintenance isolation matter.

Cross-reference and Suitability

This part cross-references to or suits the following equivalent part numbers and compatible alternatives:

Why Choose ICS Trailers

ICS Trailers can help match battery isolation hardware to the vehicle circuit, current load and mounting position. If the setup only needs 2 pole isolation, compare the related 2 pole lockout versions before ordering.

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