It mounts directly onto a matching S0 contactor — no separate DIN-rail bracket needed — saving panel space and wiring time. The 9.6 W typical power loss at rated current means the heat stays manageable inside a closed enclosure, but keep the 6 mm side spacing to grounded parts for derating headroom.
The 28 A rated operational current at 690 V covers most three-phase motor circuits up to about 15 kW at 400 V. Class 10 trip means it opens within 10 seconds at 7.2× set current — fast enough for standard induction motor starts but not for high-inertia loads that need a Class 20 or 30 relay. The thermal bimetal design responds to motor heating, not instantaneous spikes, so nuisance tripping on inrush is unlikely.
The relay fastens directly to the contactor — no separate mounting base. The 45 mm width and 96 mm depth keep the assembly within a standard 45 mm contactor footprint. Screw-type terminals on both main and auxiliary circuits accept 2× (0.5…1.5 mm²) solid or stranded, or 2× (0.75…2.5 mm²). Terminal torque: 2…2.5 N·m for main contacts, 0.8…1.2 N·m for auxiliaries.