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D4A-[]N

General-purpose Limit Switch

D4A-[]N

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

Caution: All units are in millimeters unless otherwise indicated.

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 3

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

D4A-[]N Dimensions 4

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

D4A-[]N Dimensions 6

Note: The figures in the parentheses are average values.

Side Plunger Switches

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

D4A-[]N Dimensions 8

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

D4A-[]N Dimensions 9

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

D4A-[]N Dimensions 10

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

D4A-[]N Dimensions 11
D4A-[]N Dimensions 12

Top Plunger Switches

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

D4A-[]N Dimensions 14

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

D4A-[]N Dimensions 15

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

D4A-[]N Dimensions 16

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

D4A-[]N Dimensions 18

Flexible Rod

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

D4A-[]N Dimensions 20

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 21

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 22

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 23

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 25

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.

Roller Lever
D4A-A00

D4A-[]N Dimensions 27

Roller Lever
D4A-A10

D4A-[]N Dimensions 28

Roller Lever
D4A-A20

D4A-[]N Dimensions 30

Roller Lever
D4A-A30

D4A-[]N Dimensions 31

Roller Lever
D4A-B06

D4A-[]N Dimensions 33

Adjustable Roller Lever
D4A-C00

D4A-[]N Dimensions 34

Adjustable Rod Lever
D4A-D00

D4A-[]N Dimensions 36

Fork Lever Lock
D4A-E30

D4A-[]N Dimensions 37

Fork Lever Lock
D4A-E20

D4A-[]N Dimensions 39

Fork Lever Lock
D4A-E10

D4A-[]N Dimensions 40

Fork Lever Lock
D4A-E00

D4A-[]N Dimensions 42

Nylon Loop Lever
D4A-F00

D4A-[]N Dimensions 43

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 45

Lever Position

D4A-A00

D4A-[]N Dimensions 47

D4A-A10

D4A-[]N Dimensions 48

D4A-A20

D4A-[]N Dimensions 50

D4A-A30

D4A-[]N Dimensions 51