Omron, D4N Series

last update: December 1, 2016

• 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.

• Can be used with both standard loads and microloads.

• Conforms to the requirements for safety contacts in EN 115-1, EN 81-20, and EN 81-50 (slow-action models only).

• Certified standards: UL, EN (TÜV), and CCC

last update: December 1, 2016

last update: September 24, 2012

Characteristics

*Degree of protection 1**		IP67 (EN60947-5-1)
*Durability 2**	Mechanical	15,000,000 operations min. *5
*Durability 2**	Electrical	500,000 operations min. (3 A resistive load at 250 VAC) *3 300,000 operations min. (10 A resistive load at 250 VAC)
Operating speed		1 to 500 mm/s (D4N-1120)
Operating frequency		30 operations/minute max.
Contact resistance		25 mΩ max.
*Minimum applicable load 4**		1 mA resistive load at 5 VDC (N-level reference value)
Rated insulation voltage (Ui)		300 V
Rated frequency		50/60 Hz
Protection against electric shock		Class II (double insulation)
Pollution degree (operating environment)		3 (EN60947-5-1)
Impulse withstand voltage (EN60947-5-1)	Between terminals of same polarity	2.5 kV
	Between terminals of different polarity	4 kV
	Between each terminal and non- current carrying metallic parts	6 kV
Insulation resistance		100 MΩ min.
Contact gap		Snap-action: 2 × 0.5 mm min. Slow-action: 2 × 2 mm min.
Vibration resistance	Malfunction	10 to 55 Hz, 0.75 mm single amplitude
Shock resistance	Destruction	1,000 m/s² min.
Shock resistance	Malfunction	300 m/s² min.
Conditional short-circuit current		100 A (EN60947-5-1)
Conventional free air thermal current (Ith)		10 A (EN60947-5-1)
Ambient operating temperature		-30 to 70°C (with no icing)
Ambient operating humidity		95% max.
Weight		Approx. 82 g (D4N-1120) Approx. 99 g (D4N-6120)

Note: 1. The above values are initial values.
2. Once a contact has been used to switch a standard load, it cannot be used for a load of a smaller capacity.
Doing so may result in roughening of the contact surface and contact reliability may be lost.
*1. The degree of protection is tested using the method specified by the standard (EN60947-5-1). Confirm that sealing
properties are sufficient for the operating conditions and environment beforehand. Although the switch box is
protected from dust or water penetration, do not use the D4N in places where foreign material such as dust, dirt, oil,
water, or chemicals may penetrate through the head. Otherwise, accelerated wear, Switch damage or malfunctioning
may occur.
*2. The durability is for an ambient temperature of 5 to 35°C and an ambient humidity of 40% to 70%. For more details,
consult your OMRON representative.
*3. Do not pass the 3 A, 250 VAC load through more than 2 circuits.
*4. This value will vary with the switching frequency, environment, and reliability level. Confirm that correct operation is
possible with the actual load beforehand.
*5. The mechanical durability of fork lever lock models is 10,000,000 operations min.

last update: September 24, 2012

Note: Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions.

Switches

1-conduit Models

Roller Lever (Resin Lever, Resin Roller)
D4N-1[]20 D4N-2[]20
D4N-4[]20 D4N-9[]20 *

Roller Lever (Metal Lever, Resin Roller)
D4N-1[]22 D4N-2[]22
D4N-4[]22 D4N-9[]22 *

Roller Lever (Metal Lever, Metal Roller)
D4N-1[]25 D4N-2[]25
D4N-4[]25 D4N-9[]25 *

Roller Lever (Metal Lever, Bearing Roller)
D4N-1[]26 D4N-2[]26
D4N-4[]26 D4N-9[]26 *

* Refer to following diagrams for details on M12 connectors.

Snap-action (1NC/1NO) (2NC), Slow-action (2NC) (3NC)

Note: Variation occurs in the simultaneity of contact opening/closing operations of 2NC, 2NC/1NO, and 3NC contacts. Check contact operation.
*1. Only for snap-action models.
*2. Reference value.
*3. For safe use, always make sure that the minimum values or greater are provided.

Slow-action (1NC/1NO) (2NC/1NO)

*1. Reference values.
*2. Only for MBB models. (D4N-[]E[][] or D4N-[]F[][])
*3. For safe use, always make sure that the minimum values or greater are provided.

Plunger
D4N-1[]31 D4N-2[]31
D4N-4[]31 D4N-9[]31 *

Roller Plunger
D4N-1[]32 D4N-2[]32
D4N-4[]32 D4N-9[]32 *

One-way Roller Arm Lever (Horizontal)
D4N-1[]62 D4N-2[]62
D4N-4[]62 D4N-9[]62 *

One-way Roller Arm Lever (Vertical)
D4N-1[]72 D4N-2[]72
D4N-4[]72 D4N-9[]72 *

* Refer to following diagrams for details on M12 connectors.

Snap-action (1NC/1NO) (2NC), Slow-action (2NC) (3NC)

Note: Variation occurs in the simultaneity of contact opening/closing operations of 2NC, 2NC/1NO, and 3NC contacts.
Check contact operation.
*1. Only for snap-action models.
*2. Reference value.
*3. For safe use, always make sure that the minimum values or greater are provided.

Slow-action (1NC/1NO) (2NC/1NO)

*1. Reference values.
*2. Only for MBB models. (D4N-[]E[][] or D4N-[]F[][])
*3. For safe use, always make sure that the minimum values or greater are provided.

Adjustable Roller Lever, Form Lock (with Metal Lever, Resin Roller)
D4N-1[]2G D4N-2[]2G
D4N-4[]2G D4N-9[]2G *

Adjustable Roller Lever, Form Lock (with Metal Lever, Rubber Roller)
D4N-1[]2H D4N-2[]2H
D4N-4[]2H D4N-9[]2H *

* Refer to following diagrams for details on M12 connectors.

Snap-action (1NC/1NO) (2NC), Slow-action (2NC) (3NC)

Note: Variation occurs in the simultaneity of contact opening/closing operations of 2NC, 2NC/1NO, and 3NC contacts. Check contact operation.
*1. The operating characteristics of these Switches were measured with the roller lever set at 32 mm.
*2. Only for snap-action models.
*3. Reference value.
*4. For safe use, always make sure that the minimum values or greater are provided.

Slow-action (1NC/1NO) (2NC/1NO)

*1. The operating characteristics of these Switches were measured with the roller lever set at 32 mm.
*2. Reference values.
*3. Only for MBB models. (D4N-[]E[][] or D4N-[]F[][])
*4. For safe use, always make sure that the minimum values or greater are provided.

1-conduit M12 Connector
D4N-9[][][]

Fork Lever Lock (Right Operation) *2
D4N-2[]RE
D4N-4[]RE

Fork Lever Lock (Left Operation) *2
D4N-2[]LE
D4N-4[]LE

Cat Whisker *2
D4N-2[]80
D4N-4[]80

Plastic Rod *2
D4N-2[]87
D4N-4[]87

*1. The usable range for stainless steel wires and resin rods is 35 mm max. from the end with a total travel of 70 mm
max.
*2. In terms of construction, the Switch is a General-purpose Limit Switch rather than a Safety Limit Switch.

Slow-action (1NC/1NO) (2NC/1NO) (2NC) (3NC)

Note: Variation occurs in the simultaneity of contact opening/closing operations of 2NC, 2NC/1NO, and 3NC contacts. Check contact operation.

Snap-action (1NC/1NO) (2NC), Slow-action (2NC) (3NC)

2-conduit Models

Roller Lever (Resin Lever, Resin Roller)
D4N-6[]20
D4N-8[]20

Roller Lever (Metal Lever, Resin Roller)
D4N-6[]22
D4N-8[]22

Plunger
D4N-6[]31
D4N-8[]31

Roller Plunger
D4N-6[]32
D4N-8[]32

Snap-action (1NC/1NO) (2NC), Slow-action (2NC) (3NC)

Slow-action (1NC/1NO) (2NC/1NO)

*1. Reference values.
*2. Only for MBB models. (D4N-[]E[][] or D4N-[]F[][])
*3. For safe use, always make sure that the minimum values or greater are provided.

One-way Roller Arm Lever (Horizontal)
D4N-6[]62
D4N-8[]62

One-way Roller Arm Lever (Vertical)
D4N-6[]72
D4N-8[]72

Adjustable Roller Lever, Form Lock (with Metal Lever, Resin Roller)
D4N-6[]2G
D4N-8[]2G

Adjustable Roller Lever, Form Lock (with Metal Lever, Rubber Roller)
D4N-6[]2H
D4N-8[]2H

Snap-action (1NC/1NO) (2NC), Slow-action (2NC) (3NC)

Note: Variation occurs in the simultaneity of contact opening/closing operations of 2NC, 2NC/1NO, and 3NC contacts. Check contact operation.
*1. The operating characteristics of these Switches were measured with the roller lever set at 30 mm.
*2. The operating characteristics of these Switches were measured with the roller lever set at 31 mm.
*3. Only for snap-action models.
*4. Reference value.
*5. For safe use, always make sure that the minimum values or greater are provided.

Slow-action (1NC/1NO) (2NC/1NO)

*1. The operating characteristics of these Switches were measured with the roller lever set at 30 mm.
*2. The operating characteristics of these Switches were measured with the roller lever set at 31 mm.
*3. Reference values.
*4. Only for MBB models. (D4N-[]E[][] or D4N-[]F[][])
*5. For safe use, alw

Levers

Refer to the following for the angles and positions of the watchdogs (source: EN50047.)

Roller Lever
(D4N-[][]20)

Adjustable Roller Lever, Form Lock (with Metal Lever, Resin Roller)
(D4N-[][]2G) (Reference Values)

Adjustable Roller Lever, Form Lock (with Metal Lever, Rubber Roller)
(D4N-[][]2H) (Reference Values)

Sealed Plunger
(D4N-[][]31)

Roller Plunger
(D4N-[][]32)

One-way Roller Arm Lever (Horizontal)
(D4N-[][]62)

One-way Roller Arm Lever (Vertical) (Reference Values)
(D4N-[][]72)

Fork Lever Lock (Right Operation)
(D4N-[][]RE)

Fork Lever Lock (Left Operation)
(D4N-[][]LE)

TITLE	DOCUMENT TYPE	SIZE
D4N	Catalog	5836 KB
D4N safety limit switch instruction sheet	Instruction Manual	621 KB

Characteristics

Switches

1-conduit Models

Roller Lever (Resin Lever, Resin Roller) D4N-1[]20 D4N-2[]20 D4N-4[]20 D4N-9[]20 *

Roller Lever (Metal Lever, Resin Roller) D4N-1[]22 D4N-2[]22 D4N-4[]22 D4N-9[]22 *

Roller Lever (Metal Lever, Metal Roller) D4N-1[]25 D4N-2[]25 D4N-4[]25 D4N-9[]25 *

Roller Lever (Metal Lever, Bearing Roller) D4N-1[]26 D4N-2[]26 D4N-4[]26 D4N-9[]26 *

Snap-action (1NC/1NO) (2NC), Slow-action (2NC) (3NC)

Slow-action (1NC/1NO) (2NC/1NO)

Plunger D4N-1[]31 D4N-2[]31 D4N-4[]31 D4N-9[]31 *

Roller Plunger D4N-1[]32 D4N-2[]32 D4N-4[]32 D4N-9[]32 *

One-way Roller Arm Lever (Horizontal) D4N-1[]62 D4N-2[]62 D4N-4[]62 D4N-9[]62 *

One-way Roller Arm Lever (Vertical) D4N-1[]72 D4N-2[]72 D4N-4[]72 D4N-9[]72 *

Snap-action (1NC/1NO) (2NC), Slow-action (2NC) (3NC)

Slow-action (1NC/1NO) (2NC/1NO)

Adjustable Roller Lever, Form Lock (with Metal Lever, Resin Roller) D4N-1[]2G D4N-2[]2G D4N-4[]2G D4N-9[]2G *

Adjustable Roller Lever, Form Lock (with Metal Lever, Rubber Roller) D4N-1[]2H D4N-2[]2H D4N-4[]2H D4N-9[]2H *

Snap-action (1NC/1NO) (2NC), Slow-action (2NC) (3NC)

Slow-action (1NC/1NO) (2NC/1NO)

1-conduit M12 Connector D4N-9[][][]

Fork Lever Lock (Right Operation) *2 D4N-2[]RE D4N-4[]RE

Fork Lever Lock (Left Operation) *2 D4N-2[]LE D4N-4[]LE

Cat Whisker *2 D4N-2[]80 D4N-4[]80

Plastic Rod *2 D4N-2[]87 D4N-4[]87

Slow-action (1NC/1NO) (2NC/1NO) (2NC) (3NC)

Snap-action (1NC/1NO) (2NC), Slow-action (2NC) (3NC)

2-conduit Models

Roller Lever (Resin Lever, Resin Roller) D4N-6[]20 D4N-8[]20

Roller Lever (Metal Lever, Resin Roller) D4N-6[]22 D4N-8[]22

Plunger D4N-6[]31 D4N-8[]31

Roller Plunger D4N-6[]32 D4N-8[]32

Snap-action (1NC/1NO) (2NC), Slow-action (2NC) (3NC)

Slow-action (1NC/1NO) (2NC/1NO)

One-way Roller Arm Lever (Horizontal) D4N-6[]62 D4N-8[]62

One-way Roller Arm Lever (Vertical) D4N-6[]72 D4N-8[]72

Adjustable Roller Lever, Form Lock (with Metal Lever, Resin Roller) D4N-6[]2G D4N-8[]2G

Adjustable Roller Lever, Form Lock (with Metal Lever, Rubber Roller) D4N-6[]2H D4N-8[]2H

Snap-action (1NC/1NO) (2NC), Slow-action (2NC) (3NC)

Slow-action (1NC/1NO) (2NC/1NO)

Levers

Roller Lever (D4N-[][]20)

Adjustable Roller Lever, Form Lock (with Metal Lever, Resin Roller) (D4N-[][]2G) (Reference Values)

Adjustable Roller Lever, Form Lock (with Metal Lever, Rubber Roller) (D4N-[][]2H) (Reference Values)

Sealed Plunger (D4N-[][]31)

Roller Plunger (D4N-[][]32)

One-way Roller Arm Lever (Horizontal) (D4N-[][]62)

One-way Roller Arm Lever (Vertical) (Reference Values) (D4N-[][]72)

Fork Lever Lock (Right Operation) (D4N-[][]RE)

Fork Lever Lock (Left Operation) (D4N-[][]LE)

Roller Lever (Resin Lever, Resin Roller)
D4N-1[]20 D4N-2[]20
D4N-4[]20 D4N-9[]20 *

Roller Lever (Metal Lever, Resin Roller)
D4N-1[]22 D4N-2[]22
D4N-4[]22 D4N-9[]22 *

Roller Lever (Metal Lever, Metal Roller)
D4N-1[]25 D4N-2[]25
D4N-4[]25 D4N-9[]25 *

Roller Lever (Metal Lever, Bearing Roller)
D4N-1[]26 D4N-2[]26
D4N-4[]26 D4N-9[]26 *

Plunger
D4N-1[]31 D4N-2[]31
D4N-4[]31 D4N-9[]31 *

Roller Plunger
D4N-1[]32 D4N-2[]32
D4N-4[]32 D4N-9[]32 *

One-way Roller Arm Lever (Horizontal)
D4N-1[]62 D4N-2[]62
D4N-4[]62 D4N-9[]62 *

One-way Roller Arm Lever (Vertical)
D4N-1[]72 D4N-2[]72
D4N-4[]72 D4N-9[]72 *

Adjustable Roller Lever, Form Lock (with Metal Lever, Resin Roller)
D4N-1[]2G D4N-2[]2G
D4N-4[]2G D4N-9[]2G *

Adjustable Roller Lever, Form Lock (with Metal Lever, Rubber Roller)
D4N-1[]2H D4N-2[]2H
D4N-4[]2H D4N-9[]2H *

1-conduit M12 Connector
D4N-9[][][]

Fork Lever Lock (Right Operation) *2
D4N-2[]RE
D4N-4[]RE

Fork Lever Lock (Left Operation) *2
D4N-2[]LE
D4N-4[]LE

Cat Whisker *2
D4N-2[]80
D4N-4[]80

Plastic Rod *2
D4N-2[]87
D4N-4[]87

Roller Lever (Resin Lever, Resin Roller)
D4N-6[]20
D4N-8[]20

Roller Lever (Metal Lever, Resin Roller)
D4N-6[]22
D4N-8[]22

Plunger
D4N-6[]31
D4N-8[]31

Roller Plunger
D4N-6[]32
D4N-8[]32

One-way Roller Arm Lever (Horizontal)
D4N-6[]62
D4N-8[]62

One-way Roller Arm Lever (Vertical)
D4N-6[]72
D4N-8[]72

Adjustable Roller Lever, Form Lock (with Metal Lever, Resin Roller)
D4N-6[]2G
D4N-8[]2G

Adjustable Roller Lever, Form Lock (with Metal Lever, Rubber Roller)
D4N-6[]2H
D4N-8[]2H

Roller Lever
(D4N-[][]20)

Adjustable Roller Lever, Form Lock (with Metal Lever, Resin Roller)
(D4N-[][]2G) (Reference Values)

Adjustable Roller Lever, Form Lock (with Metal Lever, Rubber Roller)
(D4N-[][]2H) (Reference Values)

Sealed Plunger
(D4N-[][]31)

Roller Plunger
(D4N-[][]32)

One-way Roller Arm Lever (Horizontal)
(D4N-[][]62)

One-way Roller Arm Lever (Vertical) (Reference Values)
(D4N-[][]72)

Fork Lever Lock (Right Operation)
(D4N-[][]RE)

Fork Lever Lock (Left Operation)
(D4N-[][]LE)