Part identity and coil range
The AF140-40-00-11: This is a 4-pole contactor from the ABB AF140 family, with a coil rated for 24–60 V. The 4-pole configuration (four main contacts) suits applications needing three poles for motor switching plus a fourth for resistive load or auxiliary control — common in pump and compressor panels where a neutral or heater contact is required. The wide coil pickup range (24–60 V) means it holds in across a saggy 48 VDC bus or a 24 VDC control supply without needing a separate coil-voltage variant.