Page top

Lead Contents

Safety Limit Switch

D4B-[]N

D4B-[]N

Snap-action contact with certified direct opening operation certification Maintenance, seal, and resistance to shock increased and direct opening mechanism added. Three-conduit switches and 2NC switches are also available

Primary Contents



Note: Omitted dimensions are the same as those for the Roller Lever Type Models
D4B-1[][][]N and D4B-5[][][]N have a PG13.5 conduit opening. D4B-2[][][]N and D4B-6[][][]N have a G1/2 conduit opening. D4B-3[][][]N and D4B-7[][][]N have a 1/2-14NPT conduit opening.

Switches

1-conduit Models

Roller Lever
D4B-[][]11N

D4B-[][]11N_Dim

* The lever can be set to any desired position by turning the operating position indicator.

Roller Lever (Stainless Steel Roller)
D4B-[][]15N

D4B-[][]15N_Dim

* The lever can be set to any desired position by turning the operating position indicator.

Adjustable Roller Lever
D4B-[][]16N

D4B-[][]16N_Dim

* The lever can be set to any desired position by turning the operating position indicator.

Adjustable Rod Lever
D4B-[][]17N

D4B-[][]17N_Dim

* The lever can be set to any desired position by turning the operating position indicator.

Note: Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions.

D4B-[]N_Dim1

Note: Variation occurs in the simultaneity of contact opening/closing operations of 2NC contacts. Check contact operation.
*1.The operating characteristics of these Switches were measured with the roller level set at 31.5 mm.
*2.The operating characteristics of these Switches were measured with the rod level set at 140 mm.
*3.Only for slow-action models.
*4.Only for snap-action models.
*5.Reference values.
*6.Must be provided to ensure safe operation.

Top Plunger
D4B-[][]70N

D4B-[][]70N_Dim

Top Roller Plunger
D4B-[][]71N

D4B-[][]71N_Dim

Note: Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions.

D4B-[]N_Dim2

Note: Variation occurs in the simultaneity of contact opening/closing operations of 2NC contacts. Check contact operation.
*1.Only for slow-action models.
*2.Only for snap-action models.
*3.Reference values.
*4.Must be provided to ensure safe operation.

Coil Spring (Non-directional)
D4B-[][]81N

Mechanically speaking, these models are general limit switches and not safety limit switches.

D4B-[][]81N_Dim

* Be sure to adjust the dog to within 40 mm from the top end of the coil spring.

Plastic Rod (Non-directional)
D4B-[][]87N

Mechanically speaking, these models are general limit switches and not safety limit switches.

D4B-[][]87N_Dim

* Be sure to adjust the dog to within 40 mm from the top end of the plastic rod.

Note: Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions.

D4B-[]N_Dim3

Note: Variation occurs in the simultaneity of contact opening/closing operations of 2NC contacts. Check contact operation.

3-conduit Switches

Roller Lever
D4B-[][]11N

D4B-[][]11N_Dim

* The lever can be set to any desired position by turning the operating position indicator.

Roller Lever
D4B-[][]15N

D4B-[][]15N_Dim

* The lever can be set to any desired position by turning the operating position indicator.

Adjustable Roller Lever
D4B-[][]16N

D4B-[][]16N_Dim

* The lever can be set to any desired position by turning the operating position indicator.

Adjustable Rod Lever
D4B-[][]17N

D4B-[][]17N_Dim

* The lever can be set to any desired position by turning the operating position indicator.

Note: Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions.

D4B-[]N_Dim4

Note: Variation occurs in the simultaneity of contact opening/closing operations of 2NC contacts. Check contact operation.
*1.The operating characteristics of these Switches were measured with the roller level set at 31.5 mm.
*2.The operating characteristics of these Switches were measured with the rod level set at 140 mm.
*3.Only for slow-action models.
*4.Only for snap-action models.
*5.Reference values.
*6.Must be provided to ensure safe operation.

Top Plunger
D4B-[][]70N

D4B-[][]70N_Dim

Top Roller Plunger
D4B-[][]71N

D4B-[][]71N_Dim

Note: Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions.

D4B-[]N_Dim5

Note: Variation occurs in the simultaneity of contact opening/closing operations of 2NC contacts. Check contact operation.
*1.Only for slow-action models.
*2.Only for snap-action models.
*3.Reference values.
*4.Must be provided to ensure safe operation.

Coil Spring
D4B-[][]81N

D4B-[][]81N_Dim

* Set the spring so that the dog comes in contact at a point 40 mm from the tip.

Plastic Rod
D4B-[][]87N

D4B-[][]87N_Dim

* Set the spring so that the dog comes in contact at a point 40 mm from the tip.

Note: Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions.

D4B-[]N_Dim6

Note: Variation occurs in the simultaneity of contact opening/closing operations of 2NC contacts. Check contact operation.

Levers

Roller Lever
D4B-0001N

Roller Lever (Stainless Steel Roller)
D4B-0005N

D4B-0001N_Dim
D4B-0005N_Dim

Adjustable Roller Lever
D4B-0006N

Adjustable Rod Lever
D4B-0007N

D4B-0006N_Dim
D4B-0007N_Dim

Roller Lever
(Compatible with Previous D4B Model)
D4B-000RN

Roller Lever
WL-1A118

D4B-000RN_Dim
WL-1A118_Dim

Roller Lever
WL-1A106

Roller Lever
WL-1A300

WL-1A106_Dim
WL-1A300_Dim

Roller Lever
WL-1A400

Adjustable Rod Lever
WL-3A100

WL-1A400_Dim
WL-3A100_Dim

Spring Rod Lever
WL-4A201

Resin Loop Lever
D4A-F00

WL-4A201_Dim
D4A-F00_Dim

Note:
1. Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions.
2. Safety Limit Switch specifications are satisfied with D4B-[][][][]N Levers only (example: D4B-0001N).
The D4B-0006N Adjustable Roller Lever and D4B-0007N Adjustable Rod Lever, however, cannot be used. Do not order them for a Side Rotary Operating Head.

Caution: All units are in millimeters unless otherwise indicated.