It carries an AC-2 rating of 11 kW at 400 V — that's the slip-ring motor duty where starting current and switching frequency are moderate, so it fits applications like conveyors, pumps, and compressors that don't need heavy inching. The built-in RC surge suppressor means you don't need to order a separate varistor or snubber for coil suppression on standard AC control voltages.
Ratings that matter for fit
The AC-4 rating (15.5 A at 400 V) is the one to check if your application does frequent reversing or inching — that's where the contactor sees arcing on every break, so the current limit is lower than the AC-3 or AC-2 numbers. Short-circuit protection requires a gL/gG fuse rated at 35 A for type 2 coordination.