The 170738 is a door safety switch featuring a hinge-operated door switch type with a plastic body and head. It includes one normally closed (NC) and one normally open (NO) door contact. The switch is equipped with an arm lever actuator and a key-type selector switch with a cylindrical shape (22/25 mm diameter) and three notches, operated via a key. Additionally, there is an Omron model D4NH-1ABC, which is a door safety switch designed for secure operation. This switch offers high dielectric strength of 5000V between coil and contacts and surge resistance of 10,000V, ensuring reliable performance in safety applications.
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