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Next generation safety door switch supporting multi-contact, man-hours saving and micro load
[Features]
· As regards the contact structure, in addition of the conventional 1NC/1NO, 2NC, three type of 2NC/1NO, 3NC are available.
· M12 connector type easy to replace and saving man-hours is also released.
· Standardized au clad contact with high contact reliability.
· Supports both i.e. general load and micro load.
· Metallic head variation
Part Number
Configured Part Number is shown.
• Switches (Operation Keys are sold separately.)
Consult with your OMRON representative when ordering any models that are not listed in this table.
| Type | Contact configuration | Conduit outlet/Connector | Model | |
|---|---|---|---|---|
| 1-Conduit type | Slow-action | 1NC/1NO | Pg13.5 | D4NS-1AF * |
| G1/2 | D4NS-2AF * | |||
| M20 | D4NS-4AF | |||
| 2NC | Pg13.5 | D4NS-1BF * | ||
| G1/2 | D4NS-2BF * | |||
| M20 | D4NS-4BF | |||
| 2NC/1NO | Pg13.5 | D4NS-1CF * | ||
| G1/2 | D4NS-2CF * | |||
| M20 | D4NS-4CF | |||
| 3NC | Pg13.5 | D4NS-1DF * | ||
| G1/2 | D4NS-2DF * | |||
| M20 | D4NS-4DF | |||
| Slow-action MBB contact | 1NC/1NO | Pg13.5 | D4NS-1EF | |
| G1/2 | D4NS-2EF | |||
| M20 | D4NS-4EF | |||
| 2NC/1NO | Pg13.5 | D4NS-1FF | ||
| G1/2 | D4NS-2FF | |||
| M20 | D4NS-4FF | |||
| 2-Conduit type | Slow-action MBB contact | 1NC/1NO | G1/2 | D4NS-6AF |
| M20 | D4NS-8AF | |||
| 2NC | G1/2 | D4NS-6BF | ||
| M20 | D4NS-8BF | |||
| 2NC/1NO | G1/2 | D4NS-6CF | ||
| M20 | D4NS-8CF | |||
| 3NC | G1/2 | D4NS-6DF | ||
| M20 | D4NS-8DF | |||
| Slow-action MBB contact | 1NC/1NO | G1/2 | D4NS-6EF | |
| M20 | D4NS-8EF | |||
| 2NC/1NO | G1/2 | D4NS-6FF | ||
| M20 | D4NS-8FF | |||
| 1-Conduit type, with connector | Slow-action | 1NC/1NO | M12 connector | D4NS-9AF |
| 2NC | D4NS-9BF | |||
| Slow-action MBB contact | 1NC/1NO | D4NS-9EF | ||
| 1-Conduit type (High pull-force type) | Slow-action | 1NC/1NO | G1/2 | D4NS-2AF-SJ * |
| M20 | D4NS-4AF-SJ * | |||
| 2NC | G1/2 | D4NS-2BF-SJ * | ||
| M20 | D4NS-4BF-SJ * | |||
| 2NC/1NO | G1/2 | D4NS-2CF-SJ * | ||
| M20 | D4NS-4CF-SJ * | |||
| 3NC | G1/2 | D4NS-2DF-SJ * | ||
| M20 | D4NS-4DF-SJ * | |||
* Models with Korean S-mark certification.
• Operation Keys of Limit Switch
| Type | Model |
|---|---|
Horizontal mounting![]() | D4DS-K1 |
Vertical mounting![]() | D4DS-K2 |
| Adjustable mounting (Horizontal) ![]() | D4DS-K3 |
| Adjustable mounting (Horizontal/Vertical) ![]() | D4DS-K5 |
• Slide Keys of Limit Switch
| Appearance | Specifications | Contents | Model | Applicable Door Switch |
|---|---|---|---|---|
![]() | Weight: 422 g Mechanical durability: 20,000 operations min | Slide Key (Operation Key included.): 1 Auxiliary mounting bracket: 1 Receptacle bracket: 1 | D4NS-SK01 | D4NS 1-conduit type |
![]() | Weight: 2,800 g Mechanical durability: 20,000 operations min. | Slide Key: 1 (Disable-prevention cover and Operation Key D4DS-K2 are already mounted on Slide Key) D4NS mounting tool: 1 Inner lever: 1 Inner lever mounting screws: 2 Door Switch mounting one-way screws: 2 Switch protective cover: 1 Switch protective cover screws: 4 | D4NS-SK30 | D4NS 1-conduit type |
Note: All units are in millimeters unless otherwise indicated.
• Switches of Limit Switch
1-conduit Models

| Operating characteristics | D4NS-1□F D4NS-2□F D4NS-3□F D4NS-4□F |
|---|---|
| Key insertion force Key extraction force | 15 N max. 30 N max. |
| Pretravel (PT) | 6±3 mm |
| Total travel (TT) | (28 mm) |
| Direct opening force* Direct opening stroke* | 60 N min. 10 mm min. |
* Always maintain the above operating characteristics for safe use.
2-conduit Models

| Operating characteristics | D4NS-5□F D4NS-6□F D4NS-7□F D4NS-8□F |
|---|---|
| Key insertion force Key extraction force | 15 N max. 30 N max. |
| Pretravel (PT) | 6±3 mm |
| Total travel (TT) | (28 mm) |
| Direct opening force* Direct opening stroke* | 60 N min. 10 mm min. |
* Always maintain the above operating characteristics for safe use.
1-conduit Connector Models

| Operating characteristics | D4NS-9□F |
|---|---|
| Key insertion force Key extraction force | 15 N max. 30 N max. |
| Pretravel (PT) | 6±3 mm |
| Total travel (TT) | (28 mm) |
| Direct opening force* Direct opening stroke* | 60 N min. 10 mm min. |
* Always maintain the above operating characteristics for safe use.
Note: Unless otherwise specified, a tolerance of 0.4 mm applies to all dimensions
• Operation Keys of Limit Switch
Note: Unless otherwise specified, a tolerance of 0.4 mm applies to all dimensions.

• D4NS-SK30 of Limit Switch
Open Door

Closed Door

• Structure of Limit Switch

• Model Number Legend of Limit Switch
Switch (Standard type)

1. Conduit/Connector size
2. Built-in Switch
3. Head Mounting Direction
Note: An order for the head part or the switch part alone cannot be accepted.
The Operation Key is sold separately.
Switch (High pull-force type)

1. Conduit Outlete
2. Built-in Switch
Operation Key

1. Operation Key Type
| Part Number |
|---|
| D4NS-1AF |
| D4NS-1BF |
| D4NS-1CF |
| D4NS-1DF |
| D4NS-2AF |
| D4NS-2BF |
| D4NS-2CF |
| D4NS-2DF |
| D4NS-4AF |
| D4NS-4BF |
| D4NS-4CF |
| D4NS-4DF |
| D4NS-5AF |
| D4NS-5BF |
| D4NS-6AF |
| D4NS-6BF |
| D4NS-6DF |
| D4NS-8AF |
| D4NS-8BF |
| D4NS-8CF |
| D4NS-9AF |
| D4NS-9BF |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Detector Shape | Environment | Operating Temperature Range (°C) | Acquired Standards | Protection Structure | Force Required for Push Side O.F. (N) | Motion to Switching P.T. (mm) | Max. Stroke T.T (mm) | Contact Type | Mechanical Life (10,000 times) | Mechanical Operation Frequency (times/min or Less) | 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) | Operating Position OP (mm) | Conduit Size | Details Type | Mounting System | Direction of Operation | Contact format | Built-in Switch Specification | AC Rated Voltage | DC Rated Voltage | Head Material | Specifications | Door Switch Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MYR 124.08 | 1 Piece(s) | 2 Day(s) | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 31 | 30.6 | 96 | 10 | Pg13.5 (1-conduit type) | 1 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 1NC/1NO | 1NC/1NO (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch | ||
MYR 124.08 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 31 | 30.6 | 96 | 10 | Pg13.5 (1-conduit type) | 1 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 2NC | 2NC (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch | ||
MYR 133.30 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 31 | 30.6 | 96 | 10 | Pg13.5 (1-conduit type) | 1 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 2NC/1NO | 2NC/1NO (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch | ||
MYR 133.30 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 31 | 30.6 | 96 | 10 | Pg13.5 (1-conduit type) | 1 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 3NC | 3NC (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch | ||
MYR 137.90 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 31 | 30.6 | 96 | 10 | G1/2 (1-conduit type) | 1 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 1NC/1NO | 1NC/1NO (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch | ||
MYR 124.08 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 31 | 30.6 | 96 | 10 | G1/2 (1-conduit type) | 1 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 2NC | 2NC (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch | ||
MYR 133.30 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 31 | 30.6 | 96 | 10 | G1/2 (1-conduit type) | 1 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 2NC/1NO | 2NC/1NO (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch | ||
MYR 133.30 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 31 | 30.6 | 96 | 10 | G1/2 (1-conduit type) | 1 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 3NC | 3NC (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch | ||
MYR 124.08 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 31 | 30.6 | 96 | 10 | M20 (1-conduit type) | 1 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 1NC/1NO | 1NC/1NO (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch | ||
MYR 124.08 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 31 | 30.6 | 96 | 10 | M20 (1-conduit type) | 1 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 2NC | 2NC (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch | ||
MYR 133.30 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 31 | 30.6 | 96 | 10 | M20 (1-conduit type) | 1 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 2NC/1NO | 2NC/1NO (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch | ||
MYR 148.65 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 31 | 30.6 | 96 | 10 | M20 (1-conduit type) | 1 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 3NC | 3NC (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch | ||
MYR 189.15 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 56 | 31.5 | 88 | 10 | Pg13.5 (2-conduit type) | - | 4-direction mounting supported (front direction at shipment) | - | 1NC/1NO | 1NC/1NO (slow-action) | - | - | Plastic | - | Safety door switch | ||
MYR 189.15 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 56 | 31.5 | 88 | 10 | Pg13.5 (2-conduit type) | - | 4-direction mounting supported (front direction at shipment) | - | 2NC | 2NC (slow-action) | - | - | Plastic | - | Safety door switch | ||
MYR 171.00 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 56 | 31.5 | 88 | 10 | G1/2 (2-conduit type) | 2 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 1NC/1NO | 1NC/1NO (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch | ||
MYR 171.00 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 56 | 31.5 | 88 | 10 | G1/2 (2-conduit type) | 2 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 2NC | 2NC (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch | ||
MYR 194.00 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 56 | 31.5 | 88 | 10 | G1/2 (2-conduit type) | 2 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 3NC | 3NC (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch | ||
MYR 171.00 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 56 | 31.5 | 88 | 10 | M20 (2-conduit type) | 2 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 1NC/1NO | 1NC/1NO (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch | ||
MYR 168.55 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 56 | 31.5 | 88 | 10 | M20 (2-conduit type) | 2 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 2NC | 2NC (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch | ||
MYR 194.00 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 56 | 31.5 | 88 | 10 | M20 (2-conduit type) | 2 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 2NC/1NO | 2NC/1NO (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch | ||
MYR 242.00 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 31 | 30.6 | 96 | 10 | M12 connector (single conduit type) | 1 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 1NC/1NO | 1NC/1NO (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch | ||
MYR 242.00 | 1 Piece(s) | 5 Day(s) or more | [Others] Key | Standard / Cold Resistance | -30~70 | TUV / UL / C-UL / CE / GB(CCC) / EN | IP67 | 15 | 6±3 | 28 | Mutual insulation double-throw | 100 | 30 | DC125V / DC250V | 2.5 | 31 | 30.6 | 96 | 10 | M12 connector (single conduit type) | 1 Conduit Shape | 4-direction mounting supported (front direction at shipment) | 4-direction mounting supported (front direction at shipment) / plastic | 2NC | 2NC (slow-action) | 120/240 | 125/250 | Plastic | - | Safety door switch |
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|---|
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