HW1B-V402R 22mm Emergency Stop Switch 40mm Mushroom 2NC IDEC HW1B-V402R 22mm Emergency Stop Switch 40mm Mushroom 2NC IDEC 32.09 Ask a question The HW1B-V402R is a 22mm E-stop switch by IDEC, featuring a tamperproof construction and compliant with SEMI S2 standards. The switch features a...