Safety Products                                                               

D4BN, D4DN, D4DR & D4F - General-purpose limit switches

Omron’s D4BN, D4DN and D4DR are general purpose limit switches with a range of actuators for object over-travel and guard detection. Typical applications for these switches include elevators, escalators and conveyors. The miniaturized D4F offers up to 4 contacts with the minimum of space in a metal housing. The switches are equipped with direct opening contacts as defined in EN 60947-5-1 ‘low voltage switch-gear’, and the D4DR is equipped with a manual reset, which is ideal for situations where a visual check of the problem is required prior to the reset of the switch.

Features D4BN, D4DN & D4DR

• D4BN, D4F: metal housing IP 67
• D4DN, D4DR: plastic housing IP 65 (D4DR with reset)
• Approvals UL/CSA, TÜV, BIA
• Direct opening slow-action and snap-action contacts
• 2NC or 1NC/1NO contacts in D4DN, D4DR (BN 4NC or 2NC/2NO contacts in D4F)
• Head can be mounted in different positions
• 1, 2 or 3 cable conduits (pre-assembled cable in D4F)
• Modular system comprising switch element and actuator head
• Actuator shapes:
  Roller lever (shape A)
  Rounded plunger (shape B)
  Roller plunger (shape C) [D4DN,BN, DR]
  Roller lever arm, adjustable (shape D), [D4DN,BN, DR],
  no safety function
  Roller lever, adjustable, [D4DN,BN, DR] no safety function
  One-way roller lever (D4D-N & D4D-R)
  Wobble stick (D4B-N), no safety function

Dedicated safety prdoucts

• D4DS, D4BS safety key switch
• D4NL, BL, GL safety guard lock switches
• D4GS: miniature key switch
• D4DH: safety hinge switch
• G9SA safety relay unit
• G9SB slim size unit

Direct opening actuation	Form-fitting actuator options	Form-fitting of the Omron actuators, e.g. the D4B	Details of positive break mechanism

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