The Siemens 3RB2056-2FX2 is a SIRIUS solid-state overload relay, size S6, rated for 200 A continuous thermal current (Ith) and 200 A operational current in AC-3e duty up to 1000 V. It's an electronic overload release with integrated auxiliary contacts — no external add-ons needed for the trip signal. The CLASS 20E trip curve means it'll ride through normal motor start inrush on conveyors, pumps, or fans without nuisance tripping, but still protect the winding from a sustained overload. Straight-through transformers handle the main current circuit, so you don't mess with looping cables through a donut.
The 200 A rating at 480 V and 600 V matches it to motors in the 30–132 kW range at 500 V, or 55–160 kW at 690 V (50 Hz). That covers a lot of medium-voltage motor starters in industrial pump and fan service. The auxiliary contacts are rated for switching at various control voltages: 4 A at 120 V, 3 A at 230 V, 2 A at 24 V, and lower ratings at 60, 110, 125, and 220 V — so it'll handle most PLC or relay interface loads without a separate interposing relay. Temperature compensation is built in for -25 to +60 °C operation, and it'll survive storage or transport from -40 to +80 °C. Vibration resistance is spec'd to 1–6 Hz at 15 mm amplitude and 6–500 Hz at 20 m/s², with shock rated at 15g for 11 ms — it'll stay put on a live plant floor.
Fastening method is contactor mounting or stand-alone installation — so it can bolt directly to a matching SIRIUS contactor (like the 3RT1055 or 3RT1056 frame) or sit on a DIN rail. Any mounting position is allowed. The control circuit terminals accept 2x (0.25 to 1.5 mm²) solid or stranded wire. Dimensions are 120 mm wide, 119 mm high, and 155 mm deep — that's a compact footprint for a 200 A device, but check your panel depth before committing. The note on the part says "for message 'tripped'" — that's the integrated auxiliary contact that closes on a trip event, giving you a dry-contact signal back to the PLC or annunciator.