Isabellenhütte IEM-DCR-125 DC energy meter 125A

The IEM-DCR-125 from Isabellenhütte is a compact, high-precision DC energy meter 125A engineered for applications where space and efficiency matter most. With a maximum current capacity of 125 A and a rated voltage of 1,000 V, this meter is the ideal choice for public DC charging stations, DC wall boxes, and smart metering for IoT-based systems.

As part of Isabellenhütte second-generation DC metering portfolio, the IEM-DCR-125 comprises a Display Unit and the SU-125 Sensor Unit, offering modular flexibility depending on the use case. The device ensures seamless real-time measurement of electrical parameters including voltage, current, energy, and temperature. Data is output every few milliseconds via industry-standard CAN interface and RS485 with SML v.1 protocol, ensuring high-resolution insights for system operators and integrators.

Its DIN-rail mounting design allows for quick and easy installation in cabinet or rack environments, while the compact form factor of the SU-125 makes it especially suitable for residential or street-side infrastructure. The Display Unit includes Ethernet (RJ45) connectivity for integration into broader SCADA or billing systems and features a 128x64 pixel screen that is readable even in harsh conditions.

The DC energy meter 125A complies with major industry certifications, including MID (EN 50470), the German calibration law, LNE, and UL. This makes it not only highly accurate and efficient but also legally suitable for billing and verification in regulated environments across Europe and North America.

With support for bi-directional energy measurement, this meter supports future-ready applications like vehicle-to-grid (V2G) and net metering, giving operators the tools to adapt to changing energy landscapes.

Whether used for utility-grade metering, grid integration, or public EV infrastructure, the IEM-DCR-125 provides the accuracy, reliability, and digital connectivity necessary for modern energy ecosystems.