Safety Limit Switch
D4B-#N
• Snap-action or slow-action contact for
accurate switching with safe operation
via a direct opening mechanism with
metal deposition between mating con-
tacts.
• Two sets of contacts: one (NC) for safe-
ty category circuit and the other (NO)
for control circuit.
• Contacts opened by direct opening
mechanism (NC contacts only), thus
preventing faulty operation due to fac-
tors such as metal deposition.
• Wide standard operating temperature
range:
–40°C to 80°C (standard type).
• Safety of lever settings ensured using a
mechanism that engages a gear be-
tween the operating position indicator
plate and the lever.
• Equipped with a mechanism that indi-
cates the applicable operating zone, as
well as push-button switching to control
left and right motion.
• Conforms to EN (TÜV) standards cor-
responding to the CE marking.
• 3-conduit switches are available.
• Metric conduit types available.
Model Number Structure
Model Number Legend
D4B-####N
1 2
3
3. Actuator
00: Switch box (without head)
11: Roller lever (standard)
16: Adjustable roller lever
17: Adjustable rod lever
1R: Roller lever
(conventional D4B-compatible)
70: Top plunger
71: Top roller plunger
81: Coil spring
87: Plastic rod
1. Conduit
1:
PG13.5 (1-conduit)
2:
G1/2 (PF1/2) (1-conduit)
3:
1/2-14NPT (1-conduit)
4:
M20
5:
PG13.5 (3-conduit)
6:
G1/2 (PF1/2) (3-conduit)
7:
1/2-14NPT (3-conduit)
8:
M20 (3-conduit)
2. Built-in Switch
1:
1NC/1NO (snap-action)
3:
1NC/1NO (slow-action) gold-plated contacts
5:
1NC/1NO (slow-action) (see note)
A:
2NC (slow-action)
B:
2NC (slow-action) gold-plated contacts
Note: Excluding D4B-##81N and D4B-##87N models.
D4B-@N
G-243
D4B-@N
Ordering Information
List of Models
Switches (EN50041)
PG13.5 (see note 2)
1NC/1NO 1NC/1NO
2NC
(Snap-
(Slow-
(Slow-
action)
action)
action)
Conduit size
G1/2
1NC/1NO 1NC/1NO
(Snap-
(Slow-
action)
action)
M20
1NC/1NO
(Slow-
action)
Safety limit switch, mechanical form lock
Actuator
2NC
(Slow-
action)
1NC/1NO
(Snap-
action)
2NC
(Slow-
action)
Roller
lever
(form A)
Adjustable
roller lever
Side
(see note 1)
rotary
Adjustable
rod lever
(form D)
(see note 1)
Plain
(form B)
Top
plunger Roller
(form C)
Wobble Coil spring
lever
(see
Plastic rod
note 1)
D4B-1111N D4B-1511N D4B-1A11N D4B-2111N D4B-2511N D4B-2A11N D4B-4111N D4B-4511N D4B-4A11N
D4B-1116N D4B-1516N D4B-1A16N D4B-2116N D4B-2516N D4B-2A16N D4B-4116N D4B-4516N D4B-4A16N
D4B-1117N D4B-1517N D4B-1A17N D4B-2117N D4B-2517N D4B-2A17N D4B-4117N D4B-4517N D4B-4A17N
D4B-1170N D4B-1570N D4B-1A70N D4B-2170N D4B-2570N D4B-2A70N D4B-4170N D4B-4570N D4B-4A70N
D4B-1171N D4B-1571N D4B-1A71N D4B-2171N D4B-2571N D4B-2A71N D4B-4171N D4B-4571N D4B-4A71N
D4B-1181N ---
D4B-1187N ---
D4B-1A81N D4B-2181N ---
D4B-1A87N D4B-2187N ---
D4B-2A81N D4B-4181N ---
D4B-2A87N D4B-4187N ---
Note: 1.
Mechanically speaking, these models are basic limit switches.
2.
The D4B-#N is a Limit Switch conforming to European standards, and PG13.5 is commonly used in Europe.
3-conduit Switch
PG13.5 (see note 2)
1NC/1NO 1NC/1NO
2NC
(Snap-
(Slow-
(Slow-
action)
action)
action)
Conduit size
G1/2
1NC/1NO 1NC/1NO
(Snap-
(Slow-
action)
action)
M20
1NC/1NO
(Slow-
action)
---
Actuator
2NC
(Slow-
action)
1NC/1NO
(Snap-
action)
2NC
(Slow-
action)
Roller
lever
(form A)
Adjust-
able roller
lever (see
Side
rotary note 1)
Adjustable
rod lever
(form D)
(see note
1)
Plain
(form B)
Top
plunger Roller
(form C)
Wob-
Coil
ble le- spring
ver
Plastic
(see
rod
note 1)
D4B-5111N D4B-5511N D4B-5A11N D4B-6111N D4B-6511N D4B-6A11N D4B-8111N ---
D4B-5116N D4B-5516N D4B-5A16N D4B-6116N D4B-6516N D4B-6A16N D4B-8116N ---
---
D4B-5117N D4B-5517N D4B-5A17N D4B-6117N D4B-6517N D4B-6A17N D4B-8117N ---
---
D4B-5170N D4B-5570N D4B-5A70N D4B-6170N D4B-6570N D4B-6A70N ---
---
---
D4B-8A71N
---
---
D4B-5171N D4B-5571N D4B-5A71N D4B-6171N D4B-6571N D4B-6A71N D4B-8171N ---
D4B-5181N ---
D4B-5187N ---
D4B-5A81N D4B-6181N ---
D4B-5A87N D4B-6187N ---
D4B-6A81N ---
D4B-6A87N ---
---
---
Note: 1.
Mechanically speaking, these models are basic limit switches.
2.
The D4B-#N is a Limit Switch conforming to European standards, and M20/PG13.5 is commonly used in Europe.
3.
The wobble lever models are ordinary limit switches and are not approved under EN, GS, and SUVA’s Direct Opening Certificate.
G-244
Safety Sensors / Components
Replacement Part
Because the D4B-#N employs a block mounting construction, the switch box, operating head, and lever (side rotary type only) may be ordered as
a complete assembly or individually as replacement parts. (Replacement parts are not available as a switch box and head assembly or as a head
and lever assembly.)
Switch box
Head
Lever (side rotary type only)
=
+
+
ex. D4B-2111N
=
D4B-2100N +
D4B-0010N +
D4B-0001N
Switch Box
PG13.5
1NC/1NO
(Snap-action)
1NC/1NO
(Slow-action)
2NC
(Slow-action)
EN50041
G1/2
D4B-2100N
D4B-2500N
D4B-2A00N
1/2-14NPT
D4B-3100N
D4B-3500N
D4B-3A00N
PG13.5
D4B-5100N
D4B-5500N
D4B-5A00N
3-conduit type
G1/2
D4B-6100N
D4B-6500N
D4B-6A00N
1/2-14NPT
D4B-7100N
D4B-7500N
D4B-7A00N
D4B-1100N
D4B-1500N
D4B-1A00N
Operating Heads
Actuator
Side rotary
Top plunger
Wobble lever
Type
Standard
Plain
Roller
Coil spring
Plastic rod
Model
D4B-0010N
D4B-0070N
D4B-0071N
D4B-0081N
D4B-0087N
Levers (for Side Rotary Switches)
Actuator
Standard
Adjustable roller lever
Adjustable rod lever
Interchangeable with D4B-0001
31.5
25 to 89
145 max.
33.7
Length
Diameter of roller
17.5 dia.
19 dia.
---
19 dia.
Model
D4B-0001N
D4B-0006N
D4B-0007N
D4B-000RN
Note:
Other types of lever are also available.
D4B-@N
D4B-@N
G-245
Specifications
Approved Standards
Snap-action Models
Agency
Standard
File No.
R9851083
(Direct opening:
approved)
Slow-action Models
Agency
Standard
File No.
R9151643
TÜV Rheinland
EN60947-5-1
TÜV Rheinland
EN60947-5-1
(Direct opening:
approved)
(See note)
R9151372
(Direct opening:
approval pending)
(See note 1.)
UL
CSA
BIA (See note.)
UL508
C22.2 No. 14
GS-ET-15
UL
CSA
BIA (See note 2.)
UL508
C22.2 No. 14
GS-ET-15
E76675
LR45746
1-conduit: 9202158
3-conduit: 9309655
SUVA (See note.)
SUVA
E76675
LR45746
1-conduit: 9202158
3-conduit: 9309655
1-conduit: E6188/
1.d
3-conduit: E6189/
1.d
Note: 1.
Adjustable roller lever, adjustable rod lever, coil spring, and
plastic rod models only.
2.
Not including adjustable roller lever, adjustable rod lever,
coil spring, and plastic rod models.
Note: Not including adjustable roller lever, adjustable rod lever, coil spring, and
plastic rod models.
Standards and EC Directives
•
Conforms to the following EC Directives:
Machinery Directive
Low Voltage Directive
EN1088
EN50041
Approved Standard Ratings
TÜV Rheinland: EN60947-5-1
Utilization category
Rated operating current (I
e
)
Rated operating voltage (U
e
)
AC-15
2A
400 V
Note:
As protection against short-circuiting, use either a gI-type or gG-type 10-A fuse that conforms to IEC269.
UL/CSA: (UL508, CSA C22.2 No. 14)
A600
Rated voltage
120 VAC
240 VAC
480 VAC
600 VAC
Carry current
Make
10 A
60 A
30 A
15 A
12 A
6A
3A
1.5 A
1.2 A
Current
Break
Make
7,200 VA
720 VA
Volt-amperes
Break
G-246
Safety Sensors / Components
Characteristics
Item
Durability
(see note 3)
Operating speed
Operating frequency
Rated frequency
Insulation resistance
Contact resistance
Dielectric strength (U
imp
)
Between terminals of same polarity
Between terminals of different polarity
Between current-carrying metal parts
and ground
Between each terminal and non-cur-
rent-carrying parts
Rated insulation voltage (U
i
)
Counter electromotive voltage at switching
Operating environmental pollution level
Conditional short-circuit current
Conventional enclosed thermal current (I
the
)
Electric shock protection class
Vibration resistance
Shock resistance
Ambient temperature
Ambient humidity
Degree of protection
Weight
Mechanical
Electrical
Snap-action
Slow-action
30,000,000 operations min.
10,000,000 operations min.
500,000 operations min. (at a 250 VAC, 10-A resistive load)
1 mm/s to 0.5 m/s
Mechanical:120 operations/min
Electrical:30 operations/min
50/60 Hz
100 MΩ min. (at 500 VDC) between terminals of the same polarity and between each termi-
nal and non-current-carrying part
25 mΩ max. (initial value)
U
imp
2.5 kV
---
U
imp
4 kV
U
imp
4 kV
U
imp
4 kV
U
imp
4 kV
U
imp
4 kV
U
imp
4 kV
600 VAC (EN60947-5-1)
1,500 VAC max. (EN60947-5-1)
3 (EN60947-5-1)
100 A (EN60947-5-1)
20 A (EN60947-5-1)
Class I (with ground terminal)
Malfunction:10 to 55 Hz, 0.75 mm single amplitude
Destruction:1,000 m/s
2
min.
Malfunction:300 m/s
2
min.
Operating:–40°C to 80°C (with no icing) (see note 4)
Operating:95% max.
IP67 (EN60947-5-1)
Approx. 250 g
Note: 1.
The above values are initial values.
2.
The above values may vary depending on the model. Consult your OMRON sales representative for details.
3.
The durability is for an ambient temperature of 5°C to 35°C and ambient humidity of 40% to 70%. For further conditions, consult your
OMRON sales representative.
4.
–25°C to 80°C for the flexible-rod type.
Operating Characteristics
Model
OF max.
RF min.
PT
PT (2nd)
(see note 3)
OT min.
MD max.
(see note 4)
DOT min.
DOF min.
TT
FP max.
OP
Note: 1.
2.
3.
4.
D4B-##11N
9.41 N
1.47 N
21±3°
(45°)
50°
12°
D4B-##16N
(see note 1)
D4B-##17N
(see note 2)
2.12 N
0.29 N
D4B-##70N
18.63 N
1.96 N
2.0 mm max.
(3.0 mm)
5.0 mm
1.0 mm
3.2 mm
49.03 N
7.0 mm
38 mm
35±1 mm
D4B-##71N
D4B-##81N
1.47 N
---
15° max.
---
---
---
---
---
---
---
---
D4B-##87N
35° (Slow-action models)
55° (Snap-action models)
19.61 N
(75°)
---
---
51 mm
48±1 mm
The operating characteristics of these Switches were measured with the roller lever set at 31.5 mm.
The operating characteristics of these Switches were measured with the rod lever set at 140 mm.
Only for slow-action models.
Only for snap-action models.
D4B-@N
G-247
D4B-@N
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