---
product_id: 155702581
title: "Merten 683890 KNX Power Supply Unit/640 mA with Emergency Power Input Socket Light Grey"
brand: "merten"
price: "$613.95"
currency: USD
in_stock: false
category: "Diy"
url: https://www.desertcart.us/products/155702581-merten-683890-knx-power-supply-unit-640-ma-with-emergency
store_origin: US
region: United States of America
---

# 640 mA output Sleek light grey design Emergency input socket Merten 683890 KNX Power Supply Unit/640 mA with Emergency Power Input Socket Light Grey

**Brand:** merten
**Price:** $613.95
**Availability:** ❌ Out of Stock

## Summary

> 🔋 Power Your Future with Style!

## Quick Answers

- **What is this?** Merten 683890 KNX Power Supply Unit/640 mA with Emergency Power Input Socket Light Grey by merten
- **How much does it cost?** $613.95 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/155702581-merten-683890-knx-power-supply-unit-640-ma-with-emergency)

## Best For

- merten enthusiasts

## Why This Product

- Trusted merten brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safety First:** Built with high-quality materials for enhanced durability and safety.
- • **Stay Prepared:** Equipped with an emergency power input socket for uninterrupted service.
- • **Sleek Aesthetic:** Light grey finish that seamlessly blends with modern interiors.
- • **Smart Integration:** Designed for easy integration into your existing KNX system.
- • **Power Up Your Space:** Experience reliable 640 mA output for all your KNX devices.

## Overview

The Merten 683890 KNX Power Supply Unit delivers a robust 640 mA output, ensuring your KNX devices operate smoothly. With an emergency power input socket, this unit guarantees reliability even during outages, all wrapped in a sleek light grey design that complements any modern workspace.

## Description

For the creation of the bus Voltage for a line with max. 64&#xA0;Bus users. For Buffering The Bus Reg Power So as not to let the emergency power supply unit to be used. With integrated throttle for insulation of the power supply from the bus and a switch for power interruption and for push back and is attached to the line connected devices. For mounting on DIN rails TH35&#xA0;according to EN 60715. le bus connection works with a bus connector Ussklem Bus system KNX is Yes. Bus System KNX Remote is no. Bus System Radio Bus is no. Bus System lon is no. Bus System powernet is no. Other Bus systems as is without. Mounting Type is reg. Width in modular spacing is 4th with a LED indicator is Yes. Bus power Pufferbar is Yes. Number of built-in Thrush is 1&#xA0;Number of the Versorgbaren lines: 1. max. Output Current: is 640&#xA0;mA 640MA unit Merten Power Supply 640MA unit 6838904042811032203

## Features

- KNX power supply unit/640 mA with emergency power input socket
- Light Grey
- ›See more product details

## Images

![Merten 683890 KNX Power Supply Unit/640 mA with Emergency Power Input Socket Light Grey - Image 1](https://images-na.ssl-images-amazon.com/images/I/41xKXLUAzPL.jpg)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-22*