Actuator: Roller lever (metal lever, bearing roller).
Conduit size: 1-conduit; M20.
Built-in switch mechanism: 2NC/1NO MBB (Slow-action).
Popular Safety Limit Switches D4N-3220 PDF.
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 D4N-3220
Standardized gold-clad contacts provide high contact reliability.
Can be used with both standard loads and microloads.
Conforms to EN115-1, EN81-1, and EN81-2 (slow-action models only) D4N-3220 PDF.
Certified standards: UL, EN (TÜV), and CCC. Actuator: Roller plunger.
Conduit size: 1-conduit; M12 connector.
Built-in switch mechanism: 1NC/1NO (Slow-action).

Popular Safety Limit Switches D4N-3220 Manual.
Providing a Full Lineup Conforming to,
International Standards D4N-3220 PDF.
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 OMRON INSTRUCTION sheet.
Conforms to EN115-1, EN81-1, and EN81-2 (slow-action models only).
Certified standards: UL, EN (TÜV), and CCC. Actuator: Adjustable roller lever.
Conduit openings: M20.
1NC/1NO (Snap-action).
Robust safety limit switch with metal housing.
Slow-action and snap-action contact with,
certified direct opening operation certification OMRON INSTRUCTION sheet.
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 OMRON INSTRUCTION sheeet D4N-3220 INSTRUCTION sheet.
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: NNEMA 3, 4, 4X, 6P, and 13) D4N-3220 Manual.
Wide standard operating temperature range: –40 to 80°C (standard type).
Certified standards: UL, CSA, EN (TÜV), and CCC.