Miniature Safety-door Hinge Switch
Compact, Resin Safety-door Hinge Switch
Designed for Saving Space in Machines and
Other Equipment
• Lineup includes three contact models with 2NC/1NO and 3NC
contact forms in addition to the previous contact forms 1NC/
1NO, and 2NC. Models with MBB contacts are also available.
• M12-connector models are available, saving on labor and sim-
plifying replacement.
• Standardized gold-clad contacts provide high contact reliability
Can be used with both standard loads and microloads.
• Free of lead, cadmium, and hexavalent chrome, reducing the
burden on the environment.
D4NH
!
Caution
Be sure to read the
Safety Precautions
on page 134.
Model Number Structure
Model Number Legend
D4NH-
1 2 3
1. Conduit/Connector size
1: Pg13.5 (1-conduit)
2: G1/2 (1-conduit)
3: 1/2-14NPT (1-conduit), North America
4: M20 (1-conduit)
5: Pg13.5 (2-conduit)
6: G1/2 (2-conduit)
7:
1/2-14NPT (M20 2-conduit with 1/2"-14NPT adapter
included), North America
8: M20 (2-conduit)
9: M12 connector (1-conduit)
2. Built-in Switch
A: 1NC/1NO (slow-action)
B: 2NC (slow-action)
C: 2NC/1NO (slow-action)
D: 3NC (slow-action)
E: 1NC/1NO (MBB contact) (slow-action)
F: 2NC/1NO (MBB contact) (slow-action)
3. Actuator
AS: Shaft
BC: Arm lever
Application Examples (Protective Door Safety Measures)
Shaft Actuator
Arm Lever Actuator
127
D4NH
D4NH
Ordering Information
s
List of Models
Switches
Actuator
Conduit size
1NC/1NO
(Slow-action)
Shaft
1-conduit
Pg13.5
G1/2
1/2-14NPT
M20
M12 connector
2-conduit
Pg13.5
G1/2
1/2-14NPT
(See note 3.)
M20
Arm lever
1-conduit
Pg13.5
G1/2
1/2-14NPT
M20
M12 connector
2-conduit
Pg13.5
G1/2
1/2-14NPT
(See note 3.)
M20
Actuator
Conduit size
3NC
(Slow-action)
Shaft
1-conduit
Pg13.5
G1/2
1/2-14NPT
M20
M12 connector
2-conduit
Pg13.5
G1/2
1/2-14NPT
(See note 3.)
M20
Arm lever
1-conduit
Pg13.5
G1/2
1/2-14NPT
M20
M12 connector
2-conduit
Pg13.5
G1/2
1/2-14NPT
(See note 3.)
M20
D4NH-1DAS
D4NH-2DAS
D4NH-3DAS
D4NH-4DAS
---
D4NH-5DAS
D4NH-6DAS
D4NH-7DAS
D4NH-8DAS
D4NH-1DBC
D4NH-2DBC
D4NH-3DBC
D4NH-4DBC
---
D4NH-5DBC
D4NH-6DBC
D4NH-7DBC
D4NH-8DBC
D4NH-1AAS
D4NH-2AAS
D4NH-3AAS
D4NH-4AAS
D4NH-9AAS
D4NH-5AAS
D4NH-6AAS
D4NH-7AAS
D4NH-8AAS
D4NH-1ABC
D4NH-2ABC
D4NH-3ABC
D4NH-4ABC
D4NH-9ABC
D4NH-5ABC
D4NH-6ABC
D4NH-7ABC
D4NH-8ABC
Built-in switch mechanism
2NC
(Slow-action)
D4NH-1BAS
D4NH-2BAS
D4NH-3BAS
D4NH-4BAS
D4NH-9BAS
D4NH-5BAS
D4NH-6BAS
D4NH-7BAS
D4NH-8BAS
D4NH-1BBC
D4NH-2BBC
D4NH-3BBC
D4NH-4BBC
D4NH-9BBC
D4NH-5BBC
D4NH-6BBC
D4NH-7BBC
D4NH-8BBC
2NC/1NO
(Slow-action)
D4NH-1CAS
D4NH-2CAS
D4NH-3CAS
D4NH-4CAS
---
D4NH-5CAS
D4NH-6CAS
D4NH-7CAS
D4NH-8CAS
D4NH-1CBC
D4NH-2CBC
D4NH-3CBC
D4NH-4CBC
---
D4NH-5CBC
D4NH-6CBC
D4NH-7CBC
D4NH-8CBC
Built-in switch mechanism
1NC/1NO MBB
(Slow-action)
D4NH-1EAS
D4NH-2EAS
D4NH-3EAS
D4NH-4EAS
D4NH-9EAS
D4NH-5EAS
D4NH-6EAS
D4NH-7EAS
D4NH-8EAS
D4NH-1EBC
D4NH-2EBC
D4NH-3EBC
D4NH-4EBC
D4NH-9EBC
D4NH-5EBC
D4NH-6EBC
D4NH-7EBC
D4NH-8EBC
2NC/1NO MBB
(Slow-action)
D4NH-1FAS
D4NH-2FAS
D4NH-3FAS
D4NH-4FAS
---
D4NH-5FAS
D4NH-6FAS
D4NH-7FAS
D4NH-8FAS
D4NH-1FBC
D4NH-2FBC
D4NH-3FBC
D4NH-4FBC
---
D4NH-5FBC
D4NH-6FBC
D4NH-7FBC
D4NH-8FBC
Note: 1.
It is recommended that M20 be used for Switches to be exported to Europe and 1/2-14NPT be used for Switches to be exported to North
American countries.
2.
All models have slow-action contacts with approved direct opening mechanisms on NC contacts only.
3.
The 1/2-14NPT 2-conduit models include an M20-to-1/2-14NPT changing adaptor.
128
D4NH
D4NH
Specifications
Standards and EC Directives
•
Conforms to the following EC Directives:
Machinery Directive
Low Voltage Directive
EN50047
EN1088
GS-ET-15
s
Approved Standard Ratings
TÜV (EN60947-5-1)
Item
Utilization
category
3A
AC-15
DC-13
0.27 A
250 V
Rated operating current (I
e
)
s
Approved Standards
Agency
TÜV Product
Service
UL (See note.)
Standard
EN60947-5-1 (approved
direct opening)
File No.
B03 11 39656 061
Rated operating voltage (U
e
)
240 V
Note:
Use a 10-A fuse type
gI
or
gG
that conforms to IEC269 as a
short-circuit protection device. This fuse is not built into the
Switch.
UL508, CSA C22.2 No.14 E76675
UL/CSA (UL508, CSA C22.2 No. 14)
A300
Rated
voltage
120 VAC
240 VAC
Carry current
10 A
60 A
30 A
Current
Make
Break
6A
3A
Volt-amperes
Make
Break
7,200 VA 720 VA
Note:
Approval for CSA C22.2 No. 14 is authorized by the UL mark.
CCC (China Compulsory Certification)
Mark
Agency
CQC
Standard
GB14048.5
File No.
Under application
Q300
Rated
voltage
125 VDC
250 VDC
Carry current
2.5 A
Current
Make
0.55 A
0.27 A
Break
0.55 A
0.27 A
Volt-amperes
Make
69 VA
Break
69 VA
s
Characteristics
Degree of protection (See note 3.)
Durability
(See note 4.)
Operating speed
Operating frequency
Contact resistance
Minimum applicable load (See note 7.)
Rated insulation voltage (U
i
)
Protection against electric shock
Pollution degree (operating environment)
Impulse withstand voltage (EN60947-5-1)
Mechanical
Electrical
IP67 (EN60947-5-1)
1,000,000 operations min.
500,000 operations min. for a resistive load of 3 A at 250 VAC (See note 5.)
300,000 operations min. for a resistive load of 10 A at 250 VAC
2 to 360
°
/s (See note 6.)
30 operations/minute max.
25 m
Ω
max.
Resistive load of 1 mA at 5 VDC (N-level reference value)
300 V
Class II (double insulation)
Level 3 (EN60947-5-1)
Between terminals of the same polarity: 2.5 kV
Between terminals of different polarities: 4 kV
Between other terminals and uncharged metallic parts: 6 kV
Insulation resistance
Contact gap
Vibration resistance
Shock resistance
Malfunction
Destruction
Malfunction
Conditional short-circuit current
Rated open thermal current (I
th
)
Ambient temperature
Ambient humidity
Weight
100 M
Ω
min.
Snap-action: 2 x 9.5 mm min
Slow-action: 2 x 2 mm min
10 to 55 Hz, 0.75-mm single amplitude
1,000 m/s
2
300 m/s
2
100 A (EN60947-5-1)
10 A (EN60947-5-1)
Operating:
−
30
°
C to 70
°
C with no icing
Operating: 95% max.
Approx. 87 g (D4NH-1AAS)
Approx. 97 g (D4NH-1ABC)
129
D4NH
D4NH
Note: 1.
The values in the table on the previous page 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 rough-
ening of the contact surface and contact reliability may be lost.
3.
The degree of protection is tested using the method specified by the standard (EN60947-5-1). Confirm that sealing properties are suffi-
cient for the operating conditions and environment beforehand. Although the switch box is protected from dust or water penetration, do
not use the D4NH in places where foreign material such as dust, dirt, oil, water, or chemicals may penetrate through the head. Otherwise,
premature wear, Switch damage or malfunctioning may occur.
4.
The durability is for an ambient temperature of 5
°
C to 35
°
C and an ambient humidity of 40% to 70%. For more details, consult your
OMRON representative.
5.
If the ambient temperature is greater than 35
°
C, do not pass the 3-A, 250-VAC load through more than 2 circuits.
6.
For safe use, make sure that the allowable operating speed is not exceeded.
7.
This value will vary with the switching frequency, environment, and reliability level. Confirm that correct operation is possible with the ac-
tual load beforehand.
Structure, Names, and Functions
s
Structure (D4NH-@@BC)
Guard Closed
Cam
Forced
separation
of NC con-
tacts
When
opening
the guard
Guard Open
v
Arm Lever
The arm lever is mounted upwards in the center
position before shipping. To change the position,
loosen the arm lever mounting screw, dismount
the arm lever, and mount the arm lever in the left
or right position.
The joint between the shaft and
arm lever is formed with form-
lock construction which remains
secure even when the
screw becomes loose.
Head
The head can be mounted in four directions.
Conduit
A wide variety of conduits is available.
Size
1-conduit
Yes
Yes
Yes
Yes
Yes
2-conduit
Yes
Yes
Yes
Yes
---
When the guard is opened, the cam that is directly coupled to
the shaft rotates to press the Switch in the direction shown by
the (vertical) arrow. This action separates the contacts to stop
the machine.
Built-in Switch
The built-in switch has a direct opening mechanism
that forcibly separates the NC contact even when
there is contact deposit.
Cover
The cover, with a hinge on its lower part, can be
opened by removing the screw of the cover, which
ensures ease of maintenance and wiring.
* The housing and head of the D4NH are made of resin. Use D4BS Miniature
Electromagnetic Lock Safety Door Limit Switches for applications requiring
safety door switches of tough, high-sealing, or oil-resistant construction.
Pg13.5
G1/2
1/2-14NPT
M20
M12 Connector
Note:
M12 connector types are not available for
Switches with three contacts.
s
Contact Form
Model
D4NH-@A@
Contact
1NC/1NO
Zb
11
33
12
34
Contact form
Operating pattern
Remarks
11-12
33-34
Stroke
ON
Only NC contacts 11-12 have an
approved direct opening
mechanism.
The terminals 11-12 and 33-34
can be used as unlike poles.
Only NC contacts 11-12 and
31-32 have an approved
direct opening mechanism.
The terminals 11-12 and 31-32
can be used as unlike poles.
Only NC contacts 11-12 and
21-22 have an approved
direct opening mechanism.
The terminals 11-12, 21-22, and
33-34 can be used as unlike
poles.
D4NH-@B@
2NC
Zb
11
31
12
32
11-12
31-32
Stroke
ON
D4NH-@C@
2NC/1NO
11
21
33
Zb
12
22
34
11-12
21-22
33-34
Stroke
ON
130
D4NH
D4NH
Model
D4NH-@D@
3NC
Contact
Contact form
Zb
11
21
31
12
22
32
Operating pattern
11-12
21-22
31-32
Stroke
Remarks
ON
Only NC contacts 11-12, 21-22,
and 31-32 have an approved di-
rect opening mechanism.
The terminals 11-12, 21-22, and
31-32 can be used as unlike
poles.
Only NC contacts 11-12 have an
approved direct opening
mechanism.
The terminals 11-12 and 33-34
can be used as unlike poles.
Only NC contacts 11-12 and
21-22 have an approved direct
opening mechanism.
The terminals 11-12, 21-22 and
33-34 can be used as unlike poles.
D4NH-@E@
1NC/1NO MBB
Zb
11
33
12
34
11-12
33-34
Stroke
ON
D4NH-@F@
2NC/1NO MBB
11
21
33
Zb
12
22
34
11-12
21-22
33-34
Stroke
ON
Note: 1.
Terminals are numbered according to EN50013. Contact forms are according to EN60947-5-1.
2.
MBB (Make Before Break) contacts have an overlapping structure, so that before the normally closed contact (NC) opens, the normally
open contact (NO) closes.
s
Direct Opening Mechanism
1NC/1NO Contact (Slow-action)
Fixed contact (NC)
Contact spring
Movable contact
Fixed contact (NO)
Plunger
Return spring
Only the NC contact side has a direct opening mechanism.
When metal deposition occurs, the contacts are separated
from each other by the plunger being pushed in.
(Conforms to EN60947-5-1 Direct Opening Operation.)
2NC Contact (Slow-action)
Fixed contact (NC)
Movable contact
Contact spring
Plunger
Return spring
Both NC contacts have a direct opening mechanism.
When metal deposition occurs, the contacts are separated
from each other by the plunger being pushed in.
(Conforms to EN60947-5-1 Direct Opening Operation.)
131
