PILZ S1MS 24VAC/DC 2c/o – 840775 | JUAL PILZ S1MS 24VAC/DC 2c/o – 840775 – Thermistor monitoring relay, as a protection device from overheating of motors, generators, etc., 2 auxiliary contacts, 2 changeover contacts,width = 22.5 mm, UB = 24 V AC/DC.