D4B-2171N

Machine builders frequently  face the challenge of meeting several safety requirements by different risk reduction strategies, besides process specs. The safety limit switches D4B-N series is the appropriate addition for machinery planned to be in harsh environments due to its rugged metal housing and increased temperature range. Also, its enhanced mechanical lifetime, flexible mounting, and M12 connector types offer long durability and effortless maintenance.

• Direct opening mechanism and approval by notified body
• Rugged metal housing and extended mechanical switching lifetime (snap action models)
• Terminal block for direct wiring

Overview

• Snap-action contact with certified direct opening operation.
• Direct opening mechanism (NC contacts only) added to enable opening contacts when faults occur, such as fused contacts.
• Safety of lever settings ensured using a mechanism that engages a gear between the operating position indicator plate and the lever.
• Equipped with a mechanism that indicates the applicable operating zone, as well as push-button switching to control left and right motion.
• Head seal structure strengthened to improve seal properties (TÜV: IEC IP67, UL: NEMA 3, 4, 4X, 6P, and 13).
• Wide standard operating temperature range: –40 to 80°C.
• Models with gold-plated contacts to enable handling microloads.
• Certified standards: UL, CSA, EN (TÜV), and CCC.

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