Rated for motor loads up to 37 kW at 400 V, 45 kW at 500 V, and 55 kW at 690 V, it covers the common European and North American voltage bands. The auxiliary contacts are rated 2 A at 24 V and 230 V, 3 A at 120 V, and 1 A at 400 V — enough to drive a standard PLC input or a small relay coil. The "for message Tripped" note on the nameplate means the N/C contact opens on a trip, giving a positive signal to the control system.
This is an S3 frame overload relay, the largest in the SIRIUS 3RU2 series. It's designed for stand-alone installation — no DIN rail required, though it can be mounted directly to the contactor or on a mounting plate. Depth is 140 mm, width 70 mm, height 120 mm — plan your gland plate and door clearance accordingly.
Compliance documentation is in order: RoHS compliant per the 03/01/2017 substance prohibition date. The relay carries a 690 V rated insulation voltage and is tested for AC-3e switching up to 1,000 V, so it meets the IEC 60947-4-1 standard for motor starters.
The 37 kW at 400 V rating is the AC-3 (squirrel-cage motor starting) value — that's the real-world number for sizing. The 65 A at 480 V and 62 A at 600 V ratings let you use it on 480 V North American systems without derating. Per-pole power dissipation is 6.3 W, so factor that into your panel thermal budget if you're running multiple relays in a sealed enclosure. The auxiliary switch is integrated — no separate head to order, which saves a line item on the BOM.