The LUCLX6BL: The 24 V DC control voltage (20...27 V operating range, 14.5 V dropout) means this unit drops into a standard low-voltage control panel without a separate power supply — common for PLC-driven or relay-logic cabinets. The 35 ms opening time (with LUB12/32/38) is fast enough to clear a fault before downstream damage, and the 70 ms closing time prevents nuisance trips from inrush. The tripping threshold of 14.2 x Ir ±20 % is a magnetic-only characteristic — it reacts to short-circuit currents, not thermal overload — so you pair it with a separate thermal overload relay (like the LUB series) for full motor protection.
This magnetic control unit mounts in a panel via plug-in front face connection, sized at 45 x 66 x 60 mm (W x H x D). It integrates into a TeSys Ultra modular system, typically on a DIN rail or backplate, and connects to a contactor and thermal overload block. The IP20 front panel and wired terminals keep it safe for enclosed panels; the IP40 front face outside the connection zone handles light splash. Rated for altitudes up to 2000 m and temperatures with TH protective treatment per IEC 60068, it works in unconditioned industrial environments.