The TeSys LA1LD580ED is an interface module with a relay output, designed to sit on top of the integral unit in a TeSys motor starter assembly. It provides a 48 V DC control circuit to switch the main contactor coil, with control voltage limits of 0.85...1.1 Uc DC — meaning the coil holds reliably between roughly 41 V and 53 V DC, which is a wider tolerance than many 24 V DC modules offer. The output side handles a conventional free air thermal current of 63 A, and the load circuit accepts 24...240 V AC at 50/60 Hz.
If you need a drop-in replacement, the closest functional match will be a current-production interface module from the TeSys range with the same 48 V DC coil and relay output — but pinout and mounting footprint must be verified against the original panel layout.
Integration Notes for Panel Builders
Mounts on top of the integral unit — no separate DIN-rail footprint required. The screw-clamp terminals accept 1 mm² to 2.5 mm² conductors, which is standard for control wiring. The module includes overvoltage protection against reverse polarity on the control side — a practical feature that saves a diode on the panel builder's BOM.