Deif RMC-122D Current Protection Relay

Model: RMC-122D (Made by DEIF)

Power LED to show the device is energized.

Relay  LEDs in both the SHORT CIRCUIT and OVERCURRENT sections, which illuminate when the respective protection function trips the internal relay.

Connections: Terminal block connections are visible along the top and bottom of the unit for power supply (X1, X2), relay outputs (B, C), and current transformer (CT) inputs ($\text{I}\text{L}1$, $\text{I}\text{L}2$, $\text{I}\text{L}3$). The three phase current inputs ($\text{I}\text{L}1$, $\text{I}\text{L}2$, $\text{I}\text{L}3$) suggest it’s designed for a three-phase system.