Description

Overview

The Hella weatherproof battery master switch provides manual battery isolation through a double-pole, four-post arrangement. Its corrosion-resistant zinc-plated housing and double-cut copper contacts suit demanding electrical service. A white protective coating adds durability in moisture-prone marine environments and exposed heavy vehicle installations.

Features

• Double-pole switching separates two circuits with one manual control.
• 250A continuous capacity at 12–24V DC for substantial battery-fed loads.
• 2500A maximum short-duration load for up to five seconds.
• IP65 protection and a marine-oriented white surface finish.

Specifications and Materials

• Construction: zinc-plated metal housing with double-cut copper contacts.
• Configuration: four posts, double pole, OFF/ON operation.
• Mounting opening: 82mm × 77mm; fixing hole diameter: 8mm.
• Termination: 12mm stud connections.
• Protection rating: IP65.

Part number: 2769.

For detailed electrical ratings and mounting information, see HELLA’s battery master switch information.

Compatibility and Fitment

Match the four-post wiring layout before replacing a single-pole battery isolator. Check the mounting cut-out, 8mm fixing holes, cable-lug clearance and 12mm stud connections. Also confirm that the circuit’s normal current stays within the 250A continuous rating. The higher 2500A figure applies for five seconds only.

The following cross-reference numbers identify verified equivalent or replacement parts for this exact application. Confirm the selection-critical fitment details against the part being replaced before fitting.

6EK 905 250-001

Compliance and Safety

Disconnect and secure the battery supply before wiring. Use correctly rated cables, lugs and insulated connections, and protect adjacent terminals against accidental contact. IP65 resists dust and water jets when correctly installed; it does not permit immersion.

Trailer Applications

Heavy trailer and truck workshops use battery master switches to isolate suitable 12V or 24V circuits for maintenance and storage. The Hella weatherproof battery master switch also suits marine battery installations where moisture and corrosion are particular concerns. Confirm whether the existing installation requires both poles to switch together.

Cross-reference and Suitability

This part cross-references to the following verified equivalent or replacement part numbers:

Why Choose ICS Trailers

Four-post battery switches are easy to confuse with two-post isolators, especially when similar-looking units have different mounting arrangements or protective finishes. ICS Trailers can help compare your existing switch, terminal layout, dimensions and markings so the replacement matches the job. That matters when restoring battery isolation without unnecessary wiring changes.

• Check the double-pole arrangement and available cable-lug space before installation.
• Share a photo of the original unit if its markings are difficult to read.

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