It's the switching block you add alongside a power contactor to handle signal-level loads — pilot lights, PLC inputs, relay coils — without tapping the main power path. Rated 10 A at AC-12 (resistive) and 24 V, it covers the typical control-circuit voltages found in a panel.
Terminals accept solid conductors up to 4 mm², with combinations from 2x 0.5 mm² up to 2x 4 mm². That's enough for daisy-chaining multiple control loads through one contact set without a separate terminal block. Front face is IP20 — finger-safe for the panel builder, but keep it behind a cabinet door. Side clearance is zero, so you can pack these tight on the rail.
Contact ratings and environment
The 10 A AC-12 rating is the resistive load limit; for inductive control circuits the current drops with voltage — 6 A at 230 V, 3 A at 400 V, 1 A at 690 V. The 24 V DC rating is also 10 A, which is generous for a 45 mm-wide block. Four NO contacts give you independent switching paths, useful for separate run-permissive and status-feedback circuits. Shock-rated at 10g for 5 ms and 5g for 10 ms — fine for most industrial panels, but check if your application involves repeated hammering from a large contactor closing nearby.