Overview

The Vimar VM01970 is a DIN rail power supply that converts 12 to 24 V AC or DC onboard power to a 29 V DC supply for a By-me Plus bus system.

Total output current is up to 800 mA and the unit provides separate 29 V BUS and 29 V AUX outputs, with a decoupling coil on the BUS output.

It fits in a standard electrical panel (9 modules wide on a 17.5 mm module grid) and is built for real boat conditions, including cyclic salt mist and vibration testing. Operating temperature range is -5°C to +45°C.

Key features

• Input power: 12 to 24 V AC (50 to 60 Hz) or 12 to 24 V DC, with SELV output
• 29 V DC BUS output with decoupling coil plus a separate 29 V DC AUX output
• Up to 800 mA total output current for bus powered devices
• 35 mm DIN rail mounting (TH35 / EN 50022) and 9 module width (9 x 17.5 mm)
• Operating temperature range: -5°C to +45°C
• Tested for marine exposure including cyclic salt mist (IEC 60068-2-52) and sinusoidal vibration (IEC 60068-2-6)

Installation and setup

Mount it on a 35 mm DIN rail inside a ventilated cabinet. Keep it in a dry location with no dripping water or spray, and leave clearance around the housing so heat can escape.

For load planning, input draw is 3.5 A at 12 V AC or 2.5 A at 12 V DC, and 2 A at 24 V AC or 1.2 A at 24 V DC. Use those values when sizing upstream wiring and circuit protection.

Electrical and system integration

The BUS output is the 29 V feed with the built-in decoupling coil used on By-me Plus lines. AUX is a second 29 V DC output for auxiliary 29 V loads that belong on the same system.

A single line should not have more than two of these power units connected.

Compatibility and fit

This unit is for installations that need a dedicated 29 V DC supply for Vimar By-me Plus devices and related bus infrastructure. It does not replace your boat’s 12 V or 24 V distribution and should be treated as a separate supply for the automation bus inside the electrical panel.

Good match on board

It suits boats running a centralized By-me Plus setup from a 12 V or 24 V house bank, where the power supply can live in the main electrical locker or a protected helm cabinet rather than in an exposed area.