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Small Safety Limit Switch [D4N] (D4N-2B31)

Small Safety Limit Switch [D4N] D4N-2B31

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  • Small Safety Limit Switch [D4N]
  • Small Safety Limit Switch [D4N]
  • Small Safety Limit Switch [D4N]
  • Small Safety Limit Switch [D4N]
  • On Sale Till 31/03/2025

OMRON

OMRON

Safety limit switch standards. Enriched products provided globally

PDF

Japanese Only

Part Number

Configured Part Number is shown.

D4N-2B31

Dimensional Drawing of OMRON Limit Switch

1 Conduit Type of Limit Switch

Small safety limit switch D4N 1 conduit type outline drawing-1
Small safety limit switch D4N 1 conduit type outline drawing-2

Note: Limit Switch, The dimensional tolerance of all parts not specified in the above dimensional diagrams for each model is ±0.4 mm.
*For the M12 connector, see "1-conduit type, M12 connector type common."

*For information on model numbers other than those listed above, please refer to the digital catalog.

Specification Table of OMRON Limit Switch

Structure of Limit Switch

Small safety limit switch D4N structure diagram

Performance of Limit Switch

Protective structure*1 of Limit SwitchIP67 (EN60947-5-1)
Durability*2MechanicalOver 1 million times
Electrical500,000 times or more (AC250V 3A, resistive load)*3
300,000 times or more (AC250V 10A, resistive load)
Allowable Operating Speed1 to 500 mm/s (D4N-1A20R)
Allowable operating frequencyMaximum 30 times/min
Contact Resistance25mΩ or less
Minimum applicable load*4DC5V 1mA resistive load (N level reference value)
Rated insulation voltage (Ui)300V
Rated Frequency50/60Hz
Electric shock protection classClass II (double insulated)
Pollution level (usage environment)Pollution degree 3 (EN60947-5-1)
Impulse withstand voltage
(EN60947-5-1)		Between same-polarity terminals2.5kV
Between different terminals4kV
Between each terminal and non-current-carrying metal parts6kV
Insulation resistance100MΩ or more
Contact GapMinimum 2 x 2 mm
vibrationmalfunction10 to 55Hz, single amplitude 0.75mm
impactDurability1,000m/s2
malfunction300m/s2
Conditional Short Circuit Current100A (EN60947-5-1)
Rated open thermal current (Ith)10A (EN60947-5-1)
Ambient temperature-30 to +70℃ (but do not freeze)
Ambient humidity95% RH or less
massApproximately 92g (for D4N-1A20R)

Note 1. The above values ​​are initial values of Limit Switch.
   2. Once a load has been switched, a load with a smaller capacity cannot be connected to the contact. This
      may cause the contact surface to become rough and the contact reliability to be impaired.
*1. This protective structure is based on a test method based on the standard (EN60947-5-1), and the sealing performance under the actual usage environment and conditions should be confirmed in advance.
      The switch box body is protected from the intrusion of dust, oil, water, etc., but the operation key insertion port in the head part should not be exposed to cutting chips, oil, water, chemicals,etc., when using the switch. This
      may cause early wear, damage, and failure of Limit Switch.
*2. The durability conditions are at an ambient temperature of 5 to 35°C and an ambient humidity of 40 to 70% RH.
*3. Do not apply AC250V 3A to two or more circuits.
*4. This value may change depending on the switching frequency, environmental conditions, reliability level, etc. Please check with the actual load in advance.

30
45
60
  1. 1
Part Number
D4N-2B31
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipDetector Shape Main Body Size Environment Plunger Shape Type Roller Lever Shape Type Lever Shape Type Rod Shape Type Acquired Standards Force Required for Push Side O.F.
(N) 		Motion to Switching P.T.
(mm) 		Angle to Switching P.T
(deg) 		Max. Stroke T.T
(mm) 		Max. Angle T.T
(deg) 		Contact Type Contact Point Type Mechanical Life
(10,000 times) 		Rated Operating Voltage
(V) 		Rated Conductance Current
(A) 		Main Body External Dimension, Width W
(mm) 		Main Body External Dimension, Height H
(mm) 		Main Body External Dimension, Length L
(mm) 		Lever Length R
(mm) 		Detector element details Indicator Light Movement After the Operation OT
(mm) 		Operating Position OP
(mm) 		Torque necessary for operation, OF
(N·m) 		Conduit size Specification of Terminal Details Type O.D. Mounting system Direction of Operation Roller Type Contact format Release key type Lock / release system Built-in Switch Specification AC Rated Voltage DC Rated Voltage

SGD 19.15

1 Piece(s) 12 Day(s) or more Plunger TypeSmallStandard[Top Plunger] Top, Plunger---TUV / UL / C-UL / CE / GB(CCC) / EN-------1500------Plunger type----G1/2-1-conduit type, general type-------2NC contact (slow-action)120 / 240125 / 250

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  1. 1
 

Basic Information

Operating Temperature Range(°C) -30::70 Protection Structure IP67 Mechanical Operation Frequency(times/min or Less) 30

Please check the type/dimensions/specifications of the part D4N-2B31 in the Small Safety Limit Switch [D4N] series.

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Specification/Dimensions

  • Roller Lever Shape Type

    • Standard
    • Fork Lever Lock
    • Variable Roller Levers

    Clear

  • Lever Shape Type

    • The Horizontal one way roller
    • Arm Lever
      • Roller, Arm Lever
      • Unidirectional Operation Seal Roller Arm Lever

    Clear

  • Rod Shape Type

    • Spring + Metal Rod
      • Wire, Springs
    • Spring + Resin Rod
      • Plastic Rod

    Clear

  • Force Required for Push Side O.F.(N)

    • 1.5
    • 4.5
    • 5
    • 6.5
    • 15

    Clear

  • Contact Type

    • Mutual insulation double-throw
    • 2-circuit Double-break

    Clear

  • Contact Point Type

    • Rivet

    Clear

  • Rated Operating Voltage(V)

    • DC125V
    • DC250V
    • AC100/125V
    • AC240/250V

    Clear

  • Rated Conductance Current(A)

    • 2.5

    Clear

  • Indicator Light

    • AC/DC10 - 115V drive type (orange LED)

    Clear

  • Movement After the Operation OT(mm)

    • 4
    • 5
    • -

    Clear

  • Operating Position OP(mm)

    • 18.2±0.5
    • 27±0.8
    • 28.2±0.8
    • 34±0.5
    • 37±0.8
    • 44.4±0.8
    • 53±0.8
    • -

    Clear

  • Torque necessary for operation, OF(N·m)

    • 0
    • -

    Clear

  • Specification of Terminal

    • Ground terminal not included

    Clear

  • O.D.

    • φ6
    • φ9.5×5
    • φ12.5 × 5
    • φ17×6
    • φ17.5×6.8
    • φ17.5×7
    • φ50×8

    Clear

  • Mounting system

    • 4-direction mounting supported (front direction at shipment) / plastic
    • Front mounting

    Clear

  • Direction of Operation

    • Slow action
    • Slow action (direct circuit opening operation included)
    • Snap action (direct circuit opening operation included)

    Clear

  • Roller Type

    • Resin Roller R19
    • Resin Roller R20
    • Metal lever / SUS sintered alloy roller R26
    • Metal lever / bearing roller R26
    • Metal lever / resin roller R26
    • Resin lever / resin roller R26
    • -
    • Metal lever / resin roller, foam lock type
    • Metal lever / rubber roller, foam lock type
    • Plastic Rollers
    • Resin roller, foam lock type

    Clear

  • Contact format

    • 1NC/1NO
    • 1NC/1NOMBB
    • 2NC
    • 2NC/1NO
    • 2NC/1NO+1NC/1NO
    • 2NC/1NO+2NC
    • 3NC

    Clear

  • Release key type

    • General type key (resin)

    Clear

  • Lock / release system

    • DC24V solenoid lock / mechanical release scheme
    • Mechanical lock / DC24V solenoid release

    Clear

  • type

    • D4N
    • D4N-□R

    Clear

  • Detector Shape

    • Plunger Type
    • Roller Lever Type (rotation)
    • Rod Shape
    • Roller lever type

    Clear

  • Main Body Size

    • Standard
    • Small

    Clear

  • Environment

    • Standard
    • Cold Resistance

    Clear

  • Plunger Shape Type

    • Top Plunger
      • Panel Mounted Plunger
      • Top, Plunger
    • Roller Plungers
      • Roller Plunger
      • Top, Roller Plunger

    Clear

  • Detector element details

    • Resin plunger φ6
    • Resin roller φ9.5 × 5
    • Resin roller φ12.5 × 5
    • Metal lever φ17.5 × 6.8, resin roller R20-66
    • Adjustable roller lever type, form lock type (metal lever, resin roller)
    • Cat whisker type
    • Fork lever lock type
    • One-way action roller arm lever type
    • Plunger type
    • Resin Rods
    • Roller lever
    • Roller lever type (metal lever, bearing roller)
    • Roller lever type (metal lever, metal roller)
    • Roller lever type (metal lever, resin roller)
    • Roller lever type (resin lever, resin roller)
    • Roller plunger type
    • Roller plunger type (resin roller)
    • Top plunger type (resin plunger)
    • Unidirectional operation roller arm lever type (horizontal operation)
    • Unidirectional operation roller arm lever type (vertical operation)
    • Variable roller lever

    Clear

  • Conduit size

    • G1/2
    • M12 Connectors
    • M12 connector
    • PG13.5
    • M20

    Clear

  • Details Type

    • 1-conduit type, general type
    • 1-conduit type, pull-reset type
    • 1 Conduit Shape
    • 1 Conduit Shape 2 Contact Series
    • 1 Conduit Shape 3 Contact, MBB Contact Series
    • 2-conduit type, general type
    • 2 Conduit Shape 2 Contact Series
    • 2 Conduit Shape 3 Contact, MBB Contact Series
    • Caster

    Clear

  • Built-in Switch Specification

    • 1NC/1NO contact (MBB) (slow-action)
    • 1NC/1NO contact (slow-action)
    • 1NC/1NO contact (slow action)
    • 1NC/1NO contact (snap-action)
    • 1NC/1NO contact (snap action)
    • 2NC contact (slow-action)
    • 2NC contact (slow action)
    • 2NC contact (snap-action)
    • 2NC contact (snap action)
    • 2NC/1NO contact (MBB) (slow-action)
    • 2NC/1NO contact (MBB) (slow action)
    • 2NC/1NO contact (slow-action)
    • 2NC/1NO contact (slow action)
    • 3NC contact (slow action)

    Clear

  • AC Rated Voltage

    • 120 / 240

    Clear

  • DC Rated Voltage

    • 125 / 250

    Clear

  • CAD

    • 3D

    Clear

Days to Ship

    • All
    • Same day
    • 4 Day(s) or Less
    • 5 Day(s) or Less
    • 6 Day(s) or Less
    • 7 Day(s) or Less
    • 8 Day(s) or Less
    • 11 Day(s) or Less
    • 12 Day(s) or Less
    • 22 Day(s) or Less
    • 34 Day(s) or Less

    Clear

Specify Alterations

Similar Part Numbers

Part Number
D4N-1126
D4N-112G
D4N-112H
D4N-2B32
D4N-2B32R
D4N-2B62R
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipDetector Shape Main Body Size Environment Plunger Shape Type Roller Lever Shape Type Lever Shape Type Rod Shape Type Acquired Standards Force Required for Push Side O.F.
(N) 		Motion to Switching P.T.
(mm) 		Angle to Switching P.T
(deg) 		Max. Stroke T.T
(mm) 		Max. Angle T.T
(deg) 		Contact Type Contact Point Type Mechanical Life
(10,000 times) 		Rated Operating Voltage
(V) 		Rated Conductance Current
(A) 		Main Body External Dimension, Width W
(mm) 		Main Body External Dimension, Height H
(mm) 		Main Body External Dimension, Length L
(mm) 		Lever Length R
(mm) 		Detector element details Indicator Light Movement After the Operation OT
(mm) 		Operating Position OP
(mm) 		Torque necessary for operation, OF
(N·m) 		Conduit size Specification of Terminal Details Type O.D. Mounting system Direction of Operation Roller Type Contact format Release key type Lock / release system Built-in Switch Specification AC Rated Voltage DC Rated Voltage

SGD 44.50

1 Piece(s) 12 Day(s) or more Roller lever typeSmallStandard----EN / UL / C-UL / CE / GB(CCC) / TUV-------1500------Roller lever type (metal lever, bearing roller)----PG13.5-1-conduit type, general type-------1NC/1NO contact (snap action)120 / 240125 / 250

SGD 31.58

1 Piece(s) Same day Roller Lever Type (rotation)SmallStandard-Variable Roller Levers--EN / UL / GB(CCC) / TUV4.5-18-27-802-circuit Double-break-1500DC250V / DC125V2.5314582.520-66Variable roller lever----PG13.5-1 Conduit Shape 2 Contact Seriesφ17.5×6.8Front mountingSnap action (direct circuit opening operation included)Metal lever / resin roller, foam lock type1NC/1NO-----

SGD 34.97

1 Piece(s) 4 Day(s) or more Roller Lever Type (rotation)SmallStandard-Variable Roller Levers--EN / UL / GB(CCC) / TUV4.5-18-27-802-circuit Double-break-1500DC250V / DC125V2.53148.282.532-66Variable roller lever----PG13.5-1 Conduit Shape 2 Contact Seriesφ50×8Front mountingSnap action (direct circuit opening operation included)Metal lever / rubber roller, foam lock type1NC/1NO-----

SGD 25.27

1 Piece(s) 4 Day(s) or more Plunger TypeSmallStandard[Roller Plungers] Top, Roller Plunger---EN / UL / GB(CCC) / TUV6.52-6-2-circuit Double-break-1500DC250V / DC125V2.53131.583.6-Roller plunger type (resin roller)-428.2±0.8-G1/2-1 Conduit Shape 2 Contact Seriesφ9.5×5Front mountingSlow action (direct circuit opening operation included)Plastic Rollers2NC-----

SGD 45.01

1 Piece(s) 4 Day(s) or more Plunger TypeStandardStandard / Cold Resistance[Top Plunger] Top, Plunger---EN / UL / GB(CCC)159-6-Mutual insulation double-throw-100DC250V / DC125V2.588.530.595-Resin roller φ9.5 × 5AC/DC10 - 115V drive type (orange LED)-44.4±0.8-M20Ground terminal not includedCasterφ9.5×54-direction mounting supported (front direction at shipment) / plasticSlow actionPlastic Rollers2NC/1NO+1NC/1NOGeneral type key (resin)Mechanical lock / DC24V solenoid release---

SGD 44.65

1 Piece(s) 7 Day(s) or more Plunger TypeStandardStandard / Cold Resistance[Top Plunger] Panel Mounted PlungerStandardThe Horizontal one way roller-EN / UL / GB(CCC)159-9-Mutual insulation double-throw-100DC250V / DC125V2.588.530.595-Resin roller φ12.5 × 5AC/DC10 - 115V drive type (orange LED)-53±0.8-M20Ground terminal not includedCasterφ12.5 × 54-direction mounting supported (front direction at shipment) / plasticSlow actionPlastic Rollers2NC/1NO+1NC/1NOGeneral type key (resin)DC24V solenoid lock / mechanical release scheme---

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