Digital Power Distribution & Switching Module for Vehicles, Campers and Boats
The PSU Switching Unit 9012-8 ADV is a digital switching module with integrated electronic fusing. It replaces traditional relays, fuses, and power distributors with a single, freely programmable unit – featuring 8 inputs and 8 outputs, a total current of 90 amps, and up to 25 A per channel (adjustable in 5-A increments). This allows you to dim and switch lighting and consumers, and directly control motors, pumps, and valves – via classic buttons, digital or analog signals, or the display. Ideal for demanding onboard electrical systems in motorhomes, campers, vehicles, off-road, special, and marine vehicles.
What the PSU Replaces
Instead of many individual relays, fuses, and distribution blocks, one device handles the complete power distribution and protection of your onboard electrical system. This saves space, wiring, and installation time – and makes your system adaptable via software, instead of having to replace hardware.
Functions at a Glance
- Electronic fusing per output – no additional fuses needed
- Relay functions: flashing, dimming, and timer control
- Individual battery protection per output – time or voltage controlled
- Rule-based logic functions for intelligent switching sequences
- Motor, valve, and pump control via the integrated H-bridge (e.g., electric steps)
- Master light and panic function for maximum control and safety
- Individual programming of all inputs and outputs
Current & Fusing
Each output is digitally fused and can handle up to 25 A per channel; the current limit is flexibly adjustable in 5-A increments. This allows you to precisely match each circuit to its consumer – without changing fuses.
Operation & Expansion
Outputs can be controlled via various signal types: classic switches, digital signals, or analog input signals – freely configurable and automatically synchronized. Multiple PSU units can be operated in series or parallel to flexibly expand the system.
Applications
- Motorhome & Camper: dim lighting, centrally switch and protect cool boxes, pumps, and consumers
- Boat & Yacht: robust onboard power distribution for demanding marine applications
- Vehicle, Off-road & Special Vehicles: direct control of motors, valves, and steps
Example Configuration
| Output | Standard 1 | Individual |
|---|---|---|
| Output 1 | Dimming / 10 A | – |
| Output 2 | Dimming / 10 A | – |
| Output 3 | Dimming / 10 A | – |
| Output 4 | Dimming / 10 A | – |
| Output 5 | Reading lamp On/Off / 10 A | – |
| Output 6 | Cool box On/Off / 15 A | – |
| Output 7 | Multiplus On/Off | – |
| Output 8 | Permanent Plus / 5 A | – |
The inputs are always assigned to the corresponding output (Input 1 = Output 1 …).
Technical Data
| Feature | Value |
|---|---|
| Inputs/Outputs | 8 / 8 |
| Total Current | 90 A (continuous) |
| Current per Channel | up to 25 A, adjustable in 5-A increments |
| Fusing | electronic, per output |
| Control | Buttons, digital & analog signals, display |
| Special Functions | Dimming, flashing, timer, H-bridge, logic rules, battery protection |
| Expandable | multiple units in series/parallel |
| Operating Voltage | 12 V and 24 V |
| Application | Vehicle, Camper, Off-road, Marine, Special Vehicle |
| Article Number | 700901280 |
Frequently Asked Questions
What is the PSU Switching Unit 9012-8? A digital switching module with electronic fusing that replaces relays, fuses, and distributors in one device – with 8 inputs and 8 outputs.
How much current does the PSU supply? 90 A total current, up to 25 A per channel, limitable in 5-A increments.
Do I still need separate fuses? No. Each output is electronically fused; no additional fusing is required.
Can I control motors, pumps, or valves? Yes, they can be controlled directly via the integrated H-bridge.
Can the system be expanded? Yes, multiple PSU units can be operated in series or parallel.
Does the PSU work with 12 V and 24 V? Yes, the PSU Switching Unit 9012-8 ADV is designed for 12V and 24V onboard electrical systems.
⚠️Safety data sheet can be found under Downloads!
Downloads
Deutsche Downloads
FAQ
Yes, this is possible. For this, the required fuse size per circuit must be specified when ordering the switch panel.
Yes, before each switchboard, a main fuse must be integrated into the supply line to the switchboard near the battery.
Yes, all common sensors used in the marine and automotive sectors can be connected.
