M-Bus

Industrial M-Bus Repeaters and Isolators

In this category, we offer a range of specialized devices for extending and securing M-Bus communication systems: M-Bus signal repeaters and M-Bus galvanic isolators. These devices are essential for large-scale or complex metering networks where distance, signal strength, and electrical protection are key design concerns. An M-Bus repeater regenerates and amplifies the signal along the M-Bus line, allowing for increased distance between the master and the meters, while an M-Bus isolator provides full galvanic isolation between two M-Bus segments, enhancing system safety and resilience.

M-Bus repeaters and isolators are typically used in utility and building automation systems that involve a large number of M-Bus meters measuring water, heat, gas, or electricity. The standard M-Bus network has limitations in terms of physical cable length and the number of slave devices that can be supported by a single master. M-Bus repeaters overcome these limits by restoring signal levels and powering downstream devices, while isolators help prevent damage from ground loops, voltage differences, and electrical faults, especially in installations crossing buildings or power zones.

Applications of M-Bus Repeaters and Isolators

Using an M-Bus repeater makes it possible to significantly extend the reach of a metering network and increase the number of supported devices. For example, the model HD67032-B2-160 allows you to connect up to 160 M-Bus meters over longer distances while providing additional galvanic separation. This is ideal for complex installations such as apartment complexes, industrial facilities, logistics centers, and utility networks that span large areas or multiple buildings.

An M-Bus isolator is typically used to electrically separate two parts of an M-Bus system. This helps to avoid transmission issues due to voltage potential differences and prevents failures in one section from affecting the entire network. Galvanic isolation is especially critical in environments prone to surges, electromagnetic interference, or grounding problems — for example, at the boundary between indoor and outdoor equipment, or in areas with heavy electrical machinery.

Robust Construction and Seamless SCADA/BMS Integration

All M-Bus repeaters and isolators in our catalog are designed for DIN rail mounting and are built to meet the demanding requirements of industrial and commercial environments. They operate within wide temperature ranges of -40°C to +85°C, feature high resistance to electromagnetic interference, and use screw terminals for secure field wiring. Power is typically supplied via 24VDC input, and selected models include diagnostic LEDs that indicate communication status and M-Bus load levels.

Our devices comply with the EN 13757 M-Bus communication standard and are compatible with all standard M-Bus masters, gateways, and meter types. They can be easily integrated into existing networks and are frequently used alongside M-Bus to Ethernet or M-Bus to RS485 gateways in larger metering systems. Configuration is simple and intuitive using the free setup software provided with each product. Clear technical documentation is available in English and Polish, making installation and commissioning straightforward for both engineers and technicians.

If you're designing or upgrading an M-Bus infrastructure and need to extend cable distance, increase capacity, or provide electrical isolation, M-Bus repeaters and isolators are a proven and effective solution. They improve network reliability, help prevent communication loss, and provide additional protection to your system. Choose the device that best matches your application requirements and environment. If you need help selecting the right M-Bus network extender, contact our team — our experts are ready to assist with technical guidance and product recommendations.