It carries a 24 VDC coil with an integrated diode for surge suppression, drawing 2.3 W on both closing and holding. Rated for AC-3 duty at 4.5 kW on 400 V, it handles the inductive break of a standard three-phase squirrel-cage motor. The same contactor covers AC-2 at 4 kW and AC-4 at 8.5 A at 400 V, so it fits slip-ring motors or plugging/inching applications as well.
The S00 footprint — 45 mm wide, 57.5 mm tall, 72 mm deep — is the standard compact size for this current class, so it drops into existing S00 layouts without re-drilling. Main circuit screw terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or a single 4 mm² conductor — AWG equivalents 20–16, 18–14, and 12.
The 24 VDC coil includes a built-in diode for surge suppression, which means no external flyback diode is needed across the coil terminals — saves a component and a wiring step. The 2.3 W holding power stays low, so the PLC output or relay driving it does not need a high-current rated contact. Auxiliary contact ratings cover the control voltage range: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 0.3 A at 220 V DC. One instantaneous normally-open auxiliary contact is included on the base unit.
Short-circuit protection and coordination
This gives the panel builder a clear choice: tighter protection vs. higher fault tolerance.