It snaps onto the front of the contactor, adding one normally-open and one normally-closed contact, plus two normally-closed contacts that are rated solid-state-compatible for switching low-energy signals like PLC inputs or solid-state relay coils. The front IP20 protection keeps fingers out of the terminal area inside a control panel.
The switch block is rated 0.3 A at both 24 V and 60 V — that is the continuous thermal current for the auxiliary contacts, not a motor-switching figure. It means the contacts are sized for control-circuit loads: relay coils, indicator lamps, or PLC digital inputs. For higher-current auxiliary switching you would step up to the standard 10 A contacts on a larger block.
Panel integration — snap-on, screw terminals
Mounting is snap-on onto the contactor front — no tools, no DIN rail required for the block itself. The screw-type terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) with core-end processing, or the AWG equivalents 2x (20 to 16) and 2x (18 to 14). Dimensions are 44 mm wide, 38 mm tall, 51 mm deep — the depth is the critical dimension for clearance between the contactor front and the enclosure door or busbar.