Siemens 3RV2901-2E Auxiliary switch 1 pc(s) (W x H x D) 45 x 13 x 17 mm

Contactor, 4 NO, AC-1: 110 A 110 V AC/50 Hz/120 V AC/60 Hz 4-pole, 4 NO, Size S3 Screw terminal 1 NO+1 NC integrated

Price: 17.99 from Conrad Electronic