Safety Limit Switch
D4N
CSM_D4N_DS_E_10_1
Note: Contact your sales representative for details on models
Popular Safety Limit Switches
with safety standard certification.
Providing a Full Lineup Conforming to
International Standards
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.
Standardized gold-clad contacts provide high contact reliability.
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 (TV), and CCC
Be sure to read the Safety Precautions on page 17.
For the most recent information on models that have been certified for
safety standards, refer to your OMRON website.
Model Number Structure
Model Number Legend
1-Conduit Models 2-Conduit Models
D4N-@@@@ D4N-@@@@
1 2 3 1 2 3
1. Conduit size 1. Conduit size
1: Pg13.5 6: G1/2
2: G1/2 8: M20
4: M20
9: M12 connector
2. Built-in Switch 2. Built-in Switch
1: 1NC/1NO (snap-action) 1: 1NC/1NO (snap-action)
2: 2NC (snap-action) 2: 2NC (snap-action)
A: 1NC/1NO (slow-action) A: 1NC/1NO (slow-action)
B: 2NC (slow-action) B: 2NC (slow-action)
C: 2NC/1NO (slow-action) C: 2NC/1NO (slow-action)
D: 3NC (slow-action) D: 3NC (slow-action)
E: 1NC/1NO (MBB contact) (slow-action) E: 1NC/1NO (MBB contact) (slow-action)
F: 2NC/1NO (MBB contact) (slow-action) F: 2NC/1NO (MBB contact) (slow-action)
3. Head and Actuator 3. Head and Actuator
20: Roller lever (resin lever, resin roller) 20: Roller lever (resin lever, resin roller)
22: Roller lever (metal lever, resin roller) 22: Roller lever (metal lever, resin roller)
25: Roller lever (metal lever, metal roller) 25: Roller lever (metal lever, metal roller)
26: Roller lever (metal lever, bearing roller) 26: Roller lever (metal lever, bearing roller)
2G: Adjustable roller lever, form lock (metal lever, resin roller) 2G: Adjustable roller lever, form lock (metal lever, resin roller)
2H: Adjustable roller lever, form lock (metal lever, rubber roller) 2H: Adjustable roller lever, form lock (metal lever, rubber roller)
31: Plunger 31: Plunger
32: Roller Plunger 32: Roller Plunger
62: One-way roller arm lever (horizontal) 62: One-way roller arm lever (horizontal)
72: One-way roller arm lever (vertical) 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)
1D4N
Ordering Information
List of Models Consult with your OMRON representative when ordering any models that are not listed in this table.
Switches with Two Contacts (with Direct Opening Mechanism)
Built-in switch mechanism
1NC/1NO 2NC 1NC/1NO 2NC
Actuator Conduit size (Snap-action) (Snap-action) (Slow-action) (Slow-action)
Direct Direct Direct Direct
Model Model Model Model
opening opening opening opening
Roller lever (resin Pg13.5 D4N-1120 D4N-1220 D4N-1A20 D4N-1B20
lever, resin roller)
G1/2 D4N-2120 D4N-2220 D4N-2A20 D4N-2B20
1-conduit
M20 D4N-4120 D4N-4220 D4N-4A20 D4N-4B20
M12 connector D4N-9120 D4N-9220 D4N-9A20 D4N-9B20
G1/2 D4N-6120 D4N-6220 D4N-6A20 D4N-6B20
2-conduit
M20 D4N-8120 D4N-8220 D4N-8A20 D4N-8B20
Roller lever (metal Pg13.5 D4N-1122 D4N-1222 D4N-1A22 D4N-1B22
lever, resin roller)
G1/2 D4N-2122 D4N-2222 D4N-2A22 D4N-2B22
1-conduit
M20 D4N-4122 D4N-4222 D4N-4A22 D4N-4B22
M12 connector D4N-9122 D4N-9222 D4N-9A22 D4N-9B22
G1/2 D4N-6122 D4N-6222 D4N-6A22 D4N-6B22
2-conduit
M20 D4N-8122 D4N-8222 D4N-8A22 D4N-8B22
Roller lever (metal Pg13.5 D4N-1125 D4N-1225 D4N-1A25 D4N-1B25
lever, metal roller)
G1/2 D4N-2125 D4N-2225 D4N-2A25 D4N-2B25
1-conduit
M20 D4N-4125 D4N-4225 D4N-4A25 D4N-4B25
M12 connector D4N-9125 D4N-9225 D4N-9A25 D4N-9B25
Roller lever (metal
Pg13.5 D4N-1126 D4N-1226 D4N-1A26 D4N-1B26
lever, bearing roller)
G1/2 D4N-2126 D4N-2226 D4N-2A26 D4N-2B26
1-conduit
M20 D4N-4126 D4N-4226 D4N-4A26 D4N-4B26
M12 connector D4N-9126 D4N-9226 D4N-9A26 D4N-9B26
Adjustable roller Pg13.5 D4N-112G D4N-122G D4N-1A2G D4N-1B2G
lever, form lock
G1/2 D4N-212G D4N-222G D4N-2A2G D4N-2B2G
1-conduit
(metal lever, resin
M20 D4N-412G D4N-422G D4N-4A2G D4N-4B2G
roller)
M12 connector D4N-912G D4N-922G D4N-9A2G D4N-9B2G
G1/2 D4N-612G D4N-622G D4N-6A2G D4N-6B2G
2-conduit
M20 D4N-812G D4N-822G D4N-8A2G D4N-8B2G
Adjustable roller
Pg13.5 D4N-112H D4N-122H D4N-1A2H D4N-1B2H
lever, form lock
G1/2 D4N-212H D4N-222H D4N-2A2H D4N-2B2H
(metal lever, rubber
1-conduit
roller) M20 D4N-412H D4N-422H D4N-4A2H D4N-4B2H
M12 connector D4N-912H D4N-922H D4N-9A2H D4N-9B2H
G1/2 D4N-612H D4N-622H D4N-6A2H D4N-6B2H
2-conduit
M20 D4N-812H D4N-822H D4N-8A2H D4N-8B2H
Plunger Pg13.5 D4N-1131 D4N-1231 D4N-1A31 D4N-1B31
G1/2 D4N-2131 D4N-2231 D4N-2A31 D4N-2B31
1-conduit
M20 D4N-4131 D4N-4231 D4N-4A31 D4N-4B31
M12 connector D4N-9131 D4N-9231 D4N-9A31 D4N-9B31
G1/2 D4N-6131 D4N-6231 D4N-6A31 D4N-6B31
2-conduit
M20 D4N-8131 D4N-8231 D4N-8A31 D4N-8B31
Roller plunger Pg13.5 D4N-1132 D4N-1232 D4N-1A32 D4N-1B32
G1/2 D4N-2132 D4N-2232 D4N-2A32 D4N-2B32
1-conduit
M20 D4N-4132 D4N-4232 D4N-4A32 D4N-4B32
M12 connector D4N-9132 D4N-9232 D4N-9A32 D4N-9B32
G1/2 D4N-6132 D4N-6232 D4N-6A32 D4N-6B32
2-conduit
M20 D4N-8132 D4N-8232 D4N-8A32 D4N-8B32
One-way roller arm Pg13.5 D4N-1162 D4N-1262 D4N-1A62 D4N-1B62
lever (horizontal) G1/2 D4N-2162 D4N-2262 D4N-2A62 D4N-2B62
1-conduit
M20 D4N-4162 D4N-4262 D4N-4A62 D4N-4B62
M12 connector D4N-9162 D4N-9262 D4N-9A62 D4N-9B62
G1/2 D4N-6162 D4N-6262 D4N-6A62 D4N-6B62
2-conduit
M20 D4N-8162 D4N-8262 D4N-8A62 D4N-8B62
One-way roller arm Pg13.5 D4N-1172 D4N-1272 D4N-1A72 D4N-1B72
lever (vertical) G1/2 D4N-2172 D4N-2272 D4N-2A72 D4N-2B72
1-conduit
M20 D4N-4172 D4N-4272 D4N-4A72 D4N-4B72
M12 connector D4N-9172 D4N-9272 D4N-9A72 D4N-9B72
G1/2 D4N-6172 D4N-6272 D4N-6A72 D4N-6B72
2-conduit
M20 D4N-8172 D4N-8272 D4N-8A72 D4N-8B72
2