Safety Limit Switch
D4N
Upgraded Safety Limit Switches Based on
the Popular D4D, Providing a Full Lineup
Conforming to International Standards
• 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
simplifying 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.
• Conforms to EN115 and EN81-1.
• Lineup includes both slow-action and snap-action models with
Zb contacts.
• Approved standards: UL, EN (TÜV), and CCC
Note:
Be sure to read the
“Safety Precautions”
on page B-23.
Safety Limit
Switches
D4N
Note:
Contact your sales representative for details on models with
safety standard certification.
Model Number Structure
■
Model Number Legend
D4N-@@@@
1 2
3
3. Head and Actuator
20: Roller lever (resin lever, resin roller)
22: Roller lever (metal lever, resin roller)
25: Roller lever (metal lever, metal roller)
26: Roller lever (metal lever, bearing roller)
2G: Adjustable roller lever, form lock (metal lever, resin roller)
2H: Adjustable roller lever, form lock (metal lever, rubber roller)
31: Top plunger
32: Top roller plunger
62: One-way roller arm lever (horizontal)
72: One-way roller arm lever (vertical)
80: Cat whisker
87: Plastic rod
RE:Fork lever lock (right operation)
LE: Fork lever lock (left operation)
1. Conduit/Connector size
1: Pg13.5 (1-conduit)
2: G1/2 (1-conduit)
3: 1/2-14NPT (1-conduit)
4: M20 (1-conduit)
5: Pg13.5 (2-conduit)
6: G1/2 (2-conduit)
7: 1/2-14NPT (2-conduit)
8: M20 (2-conduit)
9: M12 connector (1-conduit)
2. Built-in Switch
1: 1NC/1NO (snap-action)
2: 2NC (snap-action)
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)
Safety Limit Switch
D4N
B-5
Actuator
Conduit size
1NC/1NO
(Snap-action)
Direct
opening
Model
D4N-1162
D4N-2162
D4N-3162
D4N-4162
D4N-9162
D4N-5162
D4N-6162
D4N-8162
D4N-1172
D4N-2172
D4N-3172
D4N-4172
D4N-9172
D4N-5172
D4N-6172
D4N-8172
D4N-112G
D4N-212G
D4N-312G
D4N-412G
D4N-912G
D4N-612G
D4N-812G
D4N-112H
D4N-212H
D4N-312H
D4N-412H
D4N-912H
D4N-612H
D4N-812H
Built-in switch mechanism
2NC
(Snap-action)
Direct
opening
Model
D4N-1262
D4N-2262
D4N-3262
D4N-4262
D4N-9262
D4N-5262
D4N-6262
D4N-8262
D4N-1272
D4N-2272
D4N-3272
D4N-4272
D4N-9272
D4N-5272
D4N-6272
D4N-8272
D4N-122G
D4N-222G
D4N-322G
D4N-422G
D4N-922G
D4N-622G
D4N-822G
D4N-122H
D4N-222H
D4N-322H
D4N-422H
D4N-922H
D4N-622H
D4N-822H
1NC/1NO
(Slow-action)
Direct
opening
Model
D4N-1A62
D4N-2A62
D4N-3A62
D4N-4A62
D4N-9A62
D4N-5A62
D4N-6A62
D4N-8A62
D4N-1A72
D4N-2A72
D4N-3A72
D4N-4A72
D4N-9A72
D4N-5A72
D4N-6A72
D4N-8A72
D4N-1A2G
D4N-2A2G
D4N-3A2G
D4N-4A2G
D4N-9A2G
D4N-6A2G
D4N-8A2G
D4N-1A2H
D4N-2A2H
D4N-3A2H
D4N-4A2H
D4N-9A2H
D4N-6A2H
D4N-8A2H
2NC
(Slow-action)
Direct
opening
Model
D4N-1B62
D4N-2B62
D4N-3B62
D4N-4B62
D4N-9B62
D4N-5B62
D4N-6B62
D4N-8B62
D4N-1B72
D4N-2B72
D4N-3B72
D4N-4B72
D4N-9B72
D4N-5B72
D4N-6B72
D4N-8B72
D4N-1B2G
D4N-2B2G
D4N-3B2G
D4N-4B2G
D4N-9B2G
D4N-6B2G
D4N-8B2G
D4N-1B2H
D4N-2B2H
D4N-3B2H
D4N-4B2H
D4N-9B2H
D4N-6B2H
D4N-8B2H
Safety Limit
Switches
One-way roller
arm lever
(horizontal)
1-conduit
Pg13.5
G1/2
1/2-14NPT
M20
M12 connector
2-conduit
Pg13.5
G1/2
M20
One-way roller
arm lever
(vertical)
1-conduit
Pg13.5
G1/2
1/2-14NPT
M20
M12 connector
2-conduit
Pg13.5
G1/2
M20
D4N
Adjustable roller 1-conduit
lever, form lock
(metal lever, resin
roller)
Pg13.5
G1/2
1/2-14NPT
M20
M12 connector
2-conduit
Adjustable roller
lever, form lock
(metal lever,
rubber roller)
1-conduit
G1/2
M20
Pg13.5
G1/2
1/2-14NPT
M20
M12 connector
2-conduit
G1/2
M20
Note:
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.
Switches with Three Contacts and MBB Contacts
Actuator
Conduit size
2NC/1NO
(Slow-action)
Direct
opening
Roller lever (resin 1-conduit
lever, resin roller)
Pg13.5
G1/2
1/2-14NPT
M20
M12 connector
2-conduit
Pg13.5
G1/2
M20
Model
D4N-1C20
D4N-2C20
D4N-3C20
D4N-4C20
---
D4N-5C20
D4N-6C20
D4N-8C20
Built-in switch mechanism
3NC
(Slow-action)
Direct
opening
Model
D4N-1D20
D4N-2D20
D4N-3D20
D4N-4D20
---
D4N-5D20
D4N-6D20
D4N-8D20
1NC/1NO MBB
(Slow-action)
Direct
opening
Model
D4N-1E20
D4N-2E20
D4N-3E20
D4N-4E20
D4N-9E20
D4N-5E20
D4N-6E20
D4N-8E20
2NC/1NO MBB
(Slow-action)
Direct
opening
Model
D4N-1F20
D4N-2F20
D4N-3F20
D4N-4F20
---
D4N-5F20
D4N-6F20
D4N-8F20
Safety Limit Switch
D4N
B-7
Actuator
Conduit size
2NC/1NO
(Slow-action)
Direct
opening
Model
D4N-1C2G
D4N-2C2G
D4N-3C2G
D4N-4C2G
---
D4N-6C2G
D4N-8C2G
D4N-1C2H
D4N-2C2H
D4N-3C2H
D4N-4C2H
---
D4N-6C2H
D4N-8C2H
Built-in switch mechanism
3NC
(Slow-action)
Direct
opening
Model
D4N-1D2G
D4N-2D2G
D4N-3D2G
D4N-4D2G
---
D4N-6D2G
D4N-8D2G
D4N-1D2H
D4N-2D2H
D4N-3D2H
D4N-4D2H
---
D4N-6D2H
D4N-8D2H
1NC/1NO MBB
(Slow-action)
Direct
opening
Model
D4N-1E2G
D4N-2E2G
D4N-3E2G
D4N-4E2G
D4N-9E2G
D4N-6E2G
D4N-8E2G
D4N-1E2H
D4N-2E2H
D4N-3E2H
D4N-4E2H
D4N-9E2H
D4N-6E2H
D4N-8E2H
2NC/1NO MBB
(Slow-action)
Direct
opening
Model
D4N-1F2G
D4N-2F2G
D4N-3F2G
D4N-4F2G
---
D4N-6F2G
D4N-8F2G
D4N-1F2H
D4N-2F2H
D4N-3F2H
D4N-4F2H
---
D4N-6F2H
D4N-8F2H
Safety Limit
Switches
Adjustable roller 1-conduit
lever, form lock
(metal lever, resin
roller)
Pg13.5
G1/2
1/2-14NPT
M20
M12 connector
2-conduit
Adjustable roller
lever, form lock
(metal lever,
rubber roller)
1-conduit
G1/2
M20
Pg13.5
G1/2
1/2-14NPT
M20
M12 connector
2-conduit
G1/2
M20
D4N
Note:
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.
General-purpose Switches with Two Contacts
Actuator
Conduit size
1NC/1NO
(Snap-action)
Direct
opening
Fork lever lock
(right operation)
1-conduit
G1/2
1/2-14NPT
M20
2-conduit
Fork lever lock
(left operation)
1-conduit
G1/2
M20
G1/2
1/2-14NPT
M20
2-conduit
Cat whisker
1-conduit
G1/2
M20
G1/2
1/2-14NPT
M20
2-conduit
Plastic rod
1-conduit
G1/2
M20
G1/2
1/2-14NPT
M20
2-conduit
G1/2
M20
---
---
---
---
D4N-2180
D4N-3180
D4N-4180
D4N-6180
D4N-8180
D4N-2187
D4N-3187
D4N-4187
D4N-6187
D4N-8187
---
---
---
---
D4N-2280
D4N-3280
D4N-4280
D4N-6280
D4N-8280
D4N-2287
D4N-3287
D4N-4287
D4N-6287
D4N-8287
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
Model
Built-in switch mechanism
2NC
(Snap-action)
Direct
opening
---
---
Model
1NC/1NO
(Slow-action)
Direct
opening
---
Model
2NC
(Slow-action)
Direct
opening
Model
D4N-2BRE
D4N-3BRE
D4N-4BRE
D4N-6BRE
D4N-8BRE
D4N-2BLE
D4N-3BLE
D4N-4BLE
D4N-6BLE
D4N-8BLE
---
D4N-2B80
D4N-3B80
D4N-4B80
D4N-6B80
D4N-8B80
D4N-2B87
D4N-3B87
D4N-4B87
D4N-6B87
D4N-8B87
D4N-2ARE ---
D4N-3ARE
D4N-4ARE
D4N-6ARE ---
D4N-8ARE
D4N-2ALE ---
D4N-3ALE
D4N-4ALE
D4N-6ALE ---
D4N-8ALE
---
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.
Mechanically speaking, these models are basic limit switches.
Safety Limit Switch
D4N
B-9