Overview

The Vimar VMV55003 is an IP44 surface-mount junction box sized at 80 x 80 x 40 mm for enclosing wire joins and terminations where you want a clean, accessible handoff point.

The housing is plastic with a blind (non-transparent) cover in RAL 7035 grey. It is rated with Ui 450 V insulation voltage and a working temperature range of 0°C to 60°C, which suits typical onboard AC and DC wiring when installed in an appropriate, protected location.

IP44 is a good match for sheltered areas that may see damp air or the occasional splash, but it is not meant for places that get steady hose-downs or any kind of immersion.

Key features

• IP44 protection for splash-prone, sheltered mounting locations.
• 80 x 80 x 40 mm square, surface-mount format for compact junctions.
• Six cable entry points with trimmable step membranes for routing and strain relief.
• Blind, non-transparent cover to keep wiring out of sight while still allowing quick access for inspection.
• Plastic enclosure in RAL 7035 grey with Ui 450 V insulation rating and 0°C to 60°C operating range.

Compatibility and fit

This box is intended for surface mounting on a flat bulkhead, panel, or overhead where you have room to bring cables in and still leave a gentle bend radius inside. If your run includes conduit or loom, plan the entry location so the lid can open without fighting the wiring.

For boats, it makes the most sense in dry lockers, behind helm panels, inside cabins, or under hardtops where spray is occasional rather than constant. For exposed deck areas or washdown zones, a higher IP-rated enclosure is usually the better call.

Installation and setup

Mount it to a solid surface on the wall or ceiling, then trim the step membranes to suit the cable diameter so the entry stays snug. Leave enough slack for service, keep splices and connectors positioned so the cover closes without pinching, and support heavier cables nearby so they are not hanging off the entries.

As with any junction point on a boat, the enclosure is only part of the protection. Use marine-appropriate connectors, make clean terminations, and keep dissimilar metals out of contact where corrosion could start at the connection itself.

Use cases on board

This style of junction box works well for splitting lighting circuits, grouping accessory feeds, or protecting a splice where a harness transitions through a bulkhead. It is also handy when you want a neat service point for troubleshooting without having loose connections floating behind a panel.

It is a good fit for owners and installers who want an organized, inspectable junction in a compact footprint, especially in interior spaces that see humidity, vibration, and occasional splashes.

Maintenance and care

Open the cover during routine checks and look for moisture, salt residue, or heat discoloration at the connectors. If the area tends to stay damp, drying it out early and improving cable support usually prevents repeat issues. Replace any compromised membranes or connectors so the enclosure keeps doing its job.