The LA1LC0129 is a right-side-mount auxiliary contact block from the TeSys range, carrying 4 normally-open and 1 normally-closed instantaneous contacts. This is a control-circuit accessory — it adds auxiliary signalling contacts to a TeSys contactor or starter, not a power-handling device. The 6 A rating covers typical PLC input and relay coil loads in a control panel.
The 6 A thermal current (Ith) is the continuous carry rating in free air — it's the limit for the contacts themselves, not the load they switch. For motor control circuits, this comfortably handles contactor coils, indicator lamps, and small relay loads. The 690 V insulation voltage means it's suitable for 400 V and 480 V panels with margin. The 4 NO + 1 NC configuration gives you four form-A and one form-B auxiliary contacts. The NC contact is useful for feedback or interlock circuits that need a closed path in the de-energised state. All contacts are instantaneous — no time-delay function built in. Mounts on the right side of the contactor or starter. The screw-clamp terminals accept up to 2.5 mm² on one terminal and 1.5 mm² on the other — standard for control wiring in a panel.