Overview

The Vimar VM01989 is a DIN-rail supply unit that outputs 29 VDC at up to 1280 mA for onboard control networks that run on a 29 V bus.

It takes 120-230 V~ input at 50/60 Hz, so it is typically fed from the boat’s AC distribution (shore power or an inverter-fed panel) and used to power the low-voltage bus for automation devices.

Built for DIN (60715 TH35) rail mounting and sized for 8 DIN modules (8 x 17.5 mm), it is intended for a protected electrical cabinet where wiring stays organized and service access is straightforward.

Key features

• 29 VDC output rated up to 1280 mA for 29 V bus-powered control systems
• 120-230 V~ input, 50/60 Hz for common onboard AC panels
• DIN (60715 TH35) rail mounting; occupies 8 modules (8 x 17.5 mm)
• Integrated decoupling coil to help isolate bus lines and keep power distribution tidy
• Supports feeding two lines from one supply when the system layout calls for it

Installation and setup

Mount the unit on a 60715 TH35 DIN rail inside a protected distribution cabinet. Allow room for wiring bends and airflow, and avoid locations exposed to direct spray, washdowns, or persistent condensation.

Connect the AC input from a correctly protected circuit, then land the 29 VDC output to the bus power feed points for your installation. When the system is split into two lines, keep line routing consistent with the intended segmentation so troubleshooting stays simple later.

Electrical and system integration

This is not a 12 V or 24 V DC supply for typical boat loads. It is an AC-powered unit that provides 29 VDC, which matches control and building-automation style buses used on many modern yachts, including KNX-based setups.

If the vessel is primarily DC-only, plan for how the AC feed will be provided (for example via an inverter) before committing panel space.

Compatibility and fit

With an 8-module footprint on the DIN rail, confirm available cabinet space and layout alongside breakers, terminals, and other DIN devices. It is a solid match for centralized electrical lockers where lighting controls, switching, and other automation components share a dedicated 29 V bus supply.

Maintenance and care

As part of routine electrical checks, verify the rail latch is secure and that terminals remain tight. In saltwater environments, keeping the cabinet dry and well ventilated helps limit corrosion at connections over time.