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D4A-[]N

General-purpose Limit Switch

D4A-[]N

The Limit Switch with Better Seal, Shock Resistance, and Strength

Set Model Numbers

(The box in a model number indicates the switch box type.)

Roller Lever Switches

Note:Levers of the side rotary type are optionally available.

Standard
D4A-3[]01N, D4A-4[]01N
High-sensitivity
D4A-3[]02N, D4A-4[]02N
Low-torque
D4A-3[]03N, D4A-4[]03N
High-sensitivity/Low-torque
D4A-3[]04N, D4A-4[]04N
Sequential Operation
D4A-4[]17N
Center Neutral Operating
D4A-4[]18N

D4A-[]N Dimensions 6 D4A-3[]01N_Dim

Maintained
D4A-3[]05N, D4A-4[]05N

D4A-[]N Dimensions 8 D4A-3[]05N_Dim

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

D4A-[]N Dimensions 10 D4A-[]N_Dim1

Note:The figures in the parentheses are average values.

Side Plunger Switches

Standard
D4A-3[]06N, D4A-4[]06N

D4A-[]N Dimensions 14 D4A-3[]06N_Dim

Horizontal Roller
D4A-3[]07-HN, D4A-4[]07-HN

D4A-[]N Dimensions 16 D4A-3[]07-HN_Dim

Vertical Roller
D4A-3[]07-VN, D4A-4[]07-VN

D4A-[]N Dimensions 18 D4A-3[]07-VN_Dim

Adjustable
D4A-3[]08N, D4A-4[]08N

D4A-[]N Dimensions 20 D4A-3[]08N_Dim
D4A-[]N Dimensions 21 D4A-[]N_Dim2

Top Plunger Switches

Standard
D4A-3[]09N, D4A-4[]09N

D4A-[]N Dimensions 24 D4A-3[]09N_Dim

Roller Plunger
D4A-3[]10N, D4A-4[]10N

D4A-[]N Dimensions 26 D4A-3[]10N_Dim

Adjustable
D4A-3[]11N, D4A-4[]11N

D4A-[]N Dimensions 28 D4A-3[]11N_Dim

Note:A Fork Lever Lock can be used with D4A-[][]05N models only.

D4A-[]N Dimensions 30 D4A-[]N_Dim3

Flexible Rod

Spring Wire
D4A-3[]12N, D4A-4[]12N

D4A-[]N Dimensions 33 D4A-3[]12N_Dim

Note:

1. The stainless rod can be operated from any direction except the axial direction (i.e., from the top).

2. The optimum operating range of the stainless rod is within 1/3 of the entire length from the top end.

Plastic Rod
D4A-3[]14N, D4A-4[]14N

D4A-[]N Dimensions 36 D4A-3[]14N_Dim

Note:

1. The plastic rod can be operated from any direction except the axial direction (i.e., from the top).

2. The optimum operating range of the plastic rod is within 1/3 of the entire length from the top end.

Cat Whisker
D4A-3[]15N, D4A-4[]15N

D4A-[]N Dimensions 39 D4A-3[]15N_Dim

Note:

1. The stainless rod can be operated from any direction except the axial direction (i.e., from the top).

2.The optimum operating range of the stainless rod is within 1/3 of the entire length from the top end.

Coil Spring
D4A-3[]16N, D4A-4[]16N

D4A-[]N Dimensions 42 D4A-3[]16N_Dim

Note:

1. The coil spring rod can be operated from any direction except the axial direction (i.e., from the top).

2.The optimum operating range of the coil spring rod is within 1/3 of the entire length from the top end.

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

D4A-[]N Dimensions 45 D4A-[]N_Dim4

Levers (for Roller Lever Switches)

Note:No D4A-0003N or D4A-0004N head should be used with the adjustable roller lever or mechanical malfunctioning could result because the total weight of the adjustable roller lever is comparatively large. Use a standard-load head (D4A-0001N or D4A-0002N) instead. A Fork Lever Lock can be used with D4A-[][]05N models only.

Roller Lever
D4A-A00

Roller Lever
D4A-A10

D4A-[]N Dimensions 50 D4A-A00_Dim
D4A-[]N Dimensions 51 D4A-A10_Dim

Roller Lever
D4A-A20

Roller Lever
D4A-A30

D4A-[]N Dimensions 54 D4A-A20_Dim
D4A-[]N Dimensions 55 D4A-A30_Dim

Roller Lever
D4A-B06

D4A-[]N Dimensions 57 D4A-B06_Dim

Adjustable Roller Lever
D4A-C00

Adjustable Rod Lever
D4A-D00

D4A-[]N Dimensions 60 D4A-C00_Dim
D4A-[]N Dimensions 61 D4A-D00_Dim

Fork Lever Lock
D4A-E30

Fork Lever Lock
D4A-E20

D4A-[]N Dimensions 65 D4A-E30_Dim
D4A-[]N Dimensions 66 D4A-E20_Dim

Fork Lever Lock
D4A-E10

Fork Lever Lock
D4A-E00

D4A-[]N Dimensions 70 D4A-E10_Dim
D4A-[]N Dimensions 71 D4A-E00_Dim

Nylon Loop Lever
D4A-F00

D4A-[]N Dimensions 73 D4A-F00_Dim

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

Head and Lever Positions

The operating head can be positioned and locked in any of four 90° positions and a lever can lock in any position through 360° around the shaft of the Limit Switch. Furthermore, the lever can be reversed and attached to the shaft (refer to the figures below on the right hand side). Therefore the roller is compatible with a wide movement range of a dog.

A Fork Lever Lock can be used with maintained models (D4A-0005N) only.

D4A-[]N Dimensions 78 D4A-[]N_Dim5

Lever Position

D4A-A00

D4A-A10

D4A-[]N Dimensions 82 D4A-A00_Dim
D4A-[]N Dimensions 83 D4A-A10_Dim

D4A-A20

D4A-A30

D4A-[]N Dimensions 86 D4A-A20_Dim
D4A-[]N Dimensions 87 D4A-A30_Dim