63 A, 300 mA, Type A — panel protection for 4-wire systems
It fits 3-phase 4-wire systems at 230/400 V AC, 50 Hz — common for main incomers or sub-distribution boards in commercial and light industrial panels. For a 63 A RCCB this is the standard fault-withstand rating for distribution boards with a suitable MCB or fuse ahead of it.
The 60 mm grid spacing matches standard distribution board cutouts.
Active production — sourcing for BOM lines
Silicon-free construction (no silicone outgassing) suits environments where contact corrosion on sensitive electronics is a concern, such as control cabinets housing PLCs or VFDs.