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Industrial Automation

Industrial Automation

D4B-[]N

Safety Limit Switch

D4B-[]N

Robust safety limit switch with metal housing Slow-action and snap-action contact with certified direct opening operation certification.

Set Model Numbers

Consult with your OMRON representative when ordering any models that are not listed in this table.

Safety Limit Switches (with Direct Opening Mechanism)

Actuator Conduit
openings
1NC/1NO (Snap-action) 1NC/1NO (Slow-action) 2NC (Slow-action)
Model Direct
opening
Model Direct
opening
Model Direct
opening
Roller lever
(resin roller)
392_lu_1_2 G1/2 (PF1/2) D4B-2111N 392_lu_1_1 D4B-2511N 392_lu_1_1 D4B-2A11N 392_lu_1_1
M20 D4B-4111N D4B-4511N D4B-4A11N
Roller lever
(stainless steel roller)
392_lu_1_2 G1/2 (PF1/2) D4B-2115N 392_lu_1_1 D4B-2515N 392_lu_1_1 D4B-2A15N 392_lu_1_1
M20 D4B-4115N D4B-4515N D4B-4A15N
Plunger 392_lu_1_3 G1/2 (PF1/2) D4B-2170N 392_lu_1_1 D4B-2570N 392_lu_1_1 D4B-2A70N 392_lu_1_1
M20 D4B-4170N D4B-4570N D4B-4A70N
Roller plunger 392_lu_1_4 G1/2 (PF1/2) D4B-2171N 392_lu_1_1 D4B-2571N 392_lu_1_1 D4B-2A71N 392_lu_1_1
M20 D4B-4171N D4B-4571N D4B-4A71N

General-purpose Limit Switches

Actuator Conduit
openings
1NC/1NO (Snap-action) 1NC/1NO (Slow-action) 2NC (Slow-action)
Model Direct
opening
Model Direct
opening
Model Direct
opening
Adjustable
roller lever
392_lu_2_1 G1/2 (PF1/2) D4B-2116N --- D4B-2516N --- D4B-2A16N ---
M20 D4B-4116N D4B-4516N D4B-4A16N
Adjustable
rod lever
392_lu_2_2 G1/2 (PF1/2) D4B-2117N --- D4B-2517N --- D4B-2A17N ---
M20 D4B-4117N D4B-4517N D4B-4A17N

Note: Consult your OMRON representative for products.