This unit shows the GROBARPART brand, which I like when cross-checking specs on the box.
Mitsubishi Electric NV-ZA Earth Leakage Relay, 0.2-0.5A Sens
You will find that the RIB2402D model number helps you match the correct replacement quickly.
A nice touch is the clear labeling on the override switch, so you always know what it does on the panel.