Schmersal TR 335-11ZUE Safety Interlock Switch

Schmersal TR 335-11ZUE is a metal-housed safety interlock switch designed for machine guarding, combining a safety contact and an auxiliary contact in a compact enclosure (40.5 mm x 76 mm x 38 mm) that weighs 185 g and features a single M20 x 1.5 cable entry. The aluminium-die-cast housing is painted and largely oil- and petrol-resistant, making it suitable for demanding industrial environments. Schmersal offers a broad range of actuating elements for this model, with actuator heads that can be rotated in four 90-degree positions to fit various door and guard geometries. The device is constructed according to EN 50041, providing a standardization framework for interlock components. The TR 335-11ZUE carries CCC and cULus certifications, reflecting compliance for international use. One safety contact and one auxiliary contact provide monitoring capability within safety circuits, enabling integration with safety relays and controllers to enforce safe machine shutdown on guard opening. Its compact form factor and flexible actuation options make it a versatile choice for safeguarding access to equipment where reliable interlocking and status signaling are required.