Safety Limit Switch D4B-#N • Snap-action or slow-action contact for accurate switching with safe operation via a direct opening mechanism with metal deposition between mating con- tacts. • Two sets of contacts: one (NC) for safe- ty category circuit and the other (NO) for control circuit. • Contacts opened by direct opening mechanism (NC contacts only), thus preventing faulty operation due to fac- tors such as metal deposition. • Wide standard operating temperature range: –40°C to 80°C (standard type). • Safety of lever settings ensured using a mechanism that engages a gear be- tween the operating position indicator plate and the lever. • Equipped with a mechanism that indi- cates the applicable operating zone, as well as push-button switching to control left and right motion. • Conforms to EN (TÜV) standards cor- responding to the CE marking. • 3-conduit switches are available. • Metric conduit types available. Model Number Structure Model Number Legend D4B-####N 12 3 1.Conduit 1: PG13.5 (1-conduit) 2: G1/2 (PF1/2) (1-conduit) 3: 1/2-14NPT (1-conduit) 4: M20 5: PG13.5 (3-conduit) 6: G1/2 (PF1/2) (3-conduit) 7: 1/2-14NPT (3-conduit) 8: M20 (3-conduit) 2.Built-in Switch 1: 1NC/1NO (snap-action) 3: 1NC/1NO (slow-action) gold-plated contacts 5: 1NC/1NO (slow-action) (see note) A:2NC (slow-action) B:2NC (slow-action) gold-plated contacts Note: Excluding D4B-##81N and D4B-##87N models. 3.Actuator 00: Switch box (without head) 11: Roller lever (standard) 16: Adjustable roller lever 17: Adjustable rod lever 1R:Roller lever (conventional D4B-compatible) 70: Top plunger 71: Top roller plunger 81: Coil spring 87: Plastic rod [email protected] G-243
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