Omron D4N Safety Limit Switch

Popular Safety Limit Switches
Providing a Full Lineup Conforming to
International Standards

  • Lineup includes models with 1NC/1NO, 2NC, 2NC/1NO and 3NC contact forms.
    (Slow-action models with MBB contacts are available.)
  • M12-connector models are also available, saving on labor and simplifying replacement.
  • Standardized gold-clad contacts provide high contact reliability. Can be used with both standard loads and microloads.
  • Conforms to the requirements for safety contacts in EN 115-1, EN 81-20, and EN 81-50 (slow-action models only).
  • Certified standards: UL, EN (TÜV), and CCC.


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The Omron D4N series snap action limit switch has 1NC/1NO contact configuration and an adjustable roller lever actuator. It has a screw connection and 1-conduit connection. The standardized gold-clad contacts provide high contact reliability.