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Pull-reset Safety Limit Switch


Pull-reset safety limit switch, Plunger, 2NC (slow-action), Pg13.5 (1-conduit)

Actuator Plunger
Operating mechanism Slow action
Contact form 2NC
Degree of protection IP67

Item list of D4N-[]R

  • Ratings / Performance
Operating mechanismSlow action
ctuatorPlunger 6 dia.
Frequency50/60 Hz
Contact form2NC
LoadGeneral load/Micro load
Number of conduit: 1
Ambient temperatureOperating: -30 to 70 ℃ (with no icing)
Ambient humidity95 %RH max.
Permissible operating frequency30 operations / 1 minute max.
Contact resistance (Initial value)25 mΩ max.
Insulation resistance100 MΩ min.
Impulse withstand voltageBetween each terminal of the same polarities: 2.5 kV
Between each terminal of the different polarities: 4 kV
Between each terminal and non-live-metallic part: 6 kV
DurabilityMechanical: 1,000,000 operations min.
Vibration resistanceMalfunction: 10 to 55 Hz, 0.75 mm single amplitude
Shock resistanceDestruction: 1000 m/s2
Malfunction: 300 m/s2
Degree of protectionIP67
Classification of protection against electric shockClass II (Double insulation)
Locking Force (LF)Standard value 10.8 N max.
Locking Travel (LT)Standard value 4.5 mm max.
Pre-Travel (PT)NC contacts are open: 2 mm max.
Operating Position (OP)Standard value 34±0.5 mm
Total Travel (TT)Reference value 6 mm
Direct Opening ForceStandard value 20 N min.
Direct Opening TravelStandard value 3.2 mm min.
  • Dimensions

Mounting hole dimensions

  • Circuits configuration


Pull-reset Safety Limit Switch