3 groups of 120A contact switching capability Contact on-off detection auxiliary switch can be provided Coil control single and double coil optional

Please apply a suitable voltage to the coil according to the coil polarity specified in the manual, otherwise the operating voltage of the relay will increase or even not operate; it needs to be changed When driving the polarity, please use the "-R" type relay.

Latching refers to "self-locking", which means that after the relay is energized, its state is automatically locked and the circuit is kept connected. Even if the control current is disconnected at this time, its state will not be changed. That is to say, when the power is energized and absorbed, the control current is disconnected, and it remains on until the unlock button is pressed.

Magnetic latching relay is a new type of relay developed in recent years, and it is also an automatic switch. Like other electromagnetic relays, it automatically switches on and off the circuit.

To test the electrical life of a magnetic latching relay properly, buyers should do more than repeat no-load set/reset pulses. They should build a test around the real load, real coil-drive method, real switching frequency, and real temperature conditions, then monitor contact resistance and operating characteristics as the cycles accumulate. The goal is not just to produce a big number. The goal is to learn whether the relay will still switch safely and predictably after the exact kind of stress the final product will impose.

Before ordering a smart meter relay, buyers should check three things in depth: whether the relay truly matches the electrical load and drive architecture, whether reliability and standards are supported by meaningful test data, and whether the relay can stay consistent and integration-friendly in real production. A smart meter relay is not just a switching part. It is a field-risk component, a cost-of-ownership decision, and a key factor in long-term meter performance.

Latching relays are not merely components but enablers of efficiency, accuracy, and reliability in energy metering. Their bistable operation ensures minimal power consumption, their inherent memory function guarantees accurate tariff application, and their robust design delivers long-term safety and cost savings. The integration of high-performance latching relays from specialized manufacturers like Oswell​ is, therefore, a critical design choice for developing next-generation metering devices that meet the evolving demands of modern energy management systems.

Magnetic latching relays offer compelling advantages for electric energy meters, including minimal power consumption, high reliability, and long operational life. Their unique characteristics make them indispensable components in modern smart metering systems. Oswell's continuous innovation in design and manufacturing ensures that their magnetic latching relays meet the evolving demands of the energy industry, providing utilities with robust, efficient solutions for advanced energy management and grid optimization.