The models, illustrations, and graphics are for screw-terminal models. (The dimensions for models that are omitted here are the same as for pin-plunger models.)
Pin Plunger
A-20G-B
PT
19.05±0.25
2.3 dia.
4.2
+0.075
dia. hole
−0.025
2.3SR *
OP
24.2
9.2
4.2
+0.075
dia.
−0.025
4.36
+0.1
dia.
−0.05
11.9
25.4±0.1
49.2
17.45±0.2
* Stainless-steel plunger
Short Spring Plunger
A-20GD-B
PT
15 dia.
19.05±0.25
11.2 dia.
7.15
11.9SR *
dia.
7.5
OP
24.2
9.2
* Stainless-steel plunger
17.45±0.2
Panel Mount Plunger
A-20GQ-B
PT
19.05±0.25
8.35
dia.
11.9SR *1
M12
×
1 mounting screw
OP
13.1
*2
Note: Do not use both M12
mounting screw and
Two hexagon nuts
mounting holes at the
(2 t
×
14
width
across flats)
same time.
Two lock nuts
(2 t
×
15.6
width
across flats)
16.3
16 dia.
9.2
*1 Stainless-steel plunger
*2 Incomplete screw part
with
a
maximum length of 1.5 mm.
17.45±0.2
Panel Mount Roller Plunger
A-20GQ22-B
PT
19.05±0.25
12.7 dia.
×
4.8 *1
Two hexagon nuts
(3 t
×
17
width
across flats)
OP
15.5
*2
M12
×
1 mounting screw
16.3
16 dia.
Note: Do not use both M12
mounting screw and
mounting holes at the
same time.
*1 Stainless-steel roller
9.2
*2 Incomplete screw part
with
a
maximum length of 1.5 mm.
17.45±0.2
Panel Mount Cross Roller Plunger
PT
A-20GQ21-B
OP
15.5
*2
19.05±0.25
12.7 dia.
×
4.8 *1
Two hexagon nuts
(3 t
×
17
width
across flats)
M12
×
1 mounting screw
16.3
16 dia.
9.2
Note: Do not use both M12
mounting screw and
mounting holes at the
*1 Stainless-steel roller
same time.
*2 Incomplete screw part
with
a maximum length of 1.5 mm.
17.45±0.2
Note: Unless otherwise specified, a tolerance of
±0.4
mm applies to all dimensions.
Operating Characteristics
Operating force
Release force
Pretravel
Over Travel
Movement differential
Operating Position
Model
OF
RF min.
PT max.
OT min.
MD max.
OP
A-20G-B
3.92 to 6.13 N
2.79 N
1.3 mm
0.25 mm
0.2 mm
16.3±0.4 mm
A-20GD-B
3.92 to 6.13 N
2.79 N
1.3 mm
3 mm
0.2 mm
26.2±0.5 mm
A-20GQ-B
3.92 to 6.13 N
2.79 N
1.3 mm
5.6 mm
0.2 mm
21.8±0.8 mm
A-20GQ22-B
6.18 N max.
2.75 N
1.3 mm
3.58 mm
0.35 mm
33.4±1.2 mm
A-20GQ21-B
6.18 N max.
2.75 N
1.3 mm
3.58 mm
0.35 mm
33.4±1.2 mm
3
A
Short Hinge Lever
A-20GV21-B
20.2 17.9
24.56±0.25
t=1*
2
8
.3R
4.9
PT
14.7 OP
9.2
* Stainless-steel lever
17.45±0.2
Hinge Lever
A-20GV-B
24.56±0.25
63.
5R
t=1*
PT
4.9
20.2 17.9
14.7 OP
9.2
* Stainless-steel lever
17.45±0.2
Short Hinge Roller Lever
A-20GV22-B
24.56±0.25
t=1*
26
.
2R
9.5 dia.
×
4
(plastic roller)
PT
OP
20.2 17.9
14.7
9.2
* Stainless-steel lever
17.45±0.2
Hinge Roller Lever
A-20GV2-B
24.56±0.25
PT
4
8
.4R
9.5 dia.
×
4
(plastic roller)
t=1*
OP
20.2 17.9
14.7
9.2
* Stainless-steel lever
17.45±0.2
Note: Unless otherwise specified, a tolerance of
±0.4
mm applies to all dimensions.
Operating Char-
acteristics
OF max.
RF min.
PT max.
OT min.
MD max.
OP
Model
A-20GV21-B
1.57 N
0.41 N
6.5 mm
1.2 mm
1.2 mm
19±0.8 mm
A-20GV-B
0.69 N
0.14 N
15.9 mm
4 mm
2.4 mm
19±0.8 mm
A-20GV22-B
1.57 N
0.41 N
6.3 mm
1.2 mm
1.2 mm
29.8±0.8 mm
A-20GV2-B
0.88 N
0.14 N
12 mm
2.4 mm
2.2 mm
30.2±0.8 mm
4
A
Accessories (Order Separately)
A Terminal Protective Cover and a Separator are available.
Terminal Covers (Sold Separately)
The Terminal Covers can be attached to Z, A, X, and DZ Switches.
The Terminal Cover is secured with mounting screws and protects the casing and terminal wires
from dust, vibration, or fingers, thus preventing terminal short-circuiting, ground faults, wire
disconnection or improper connection, and electric shock accidents.
Terminal Covers made of phenol resin have five or six thin wall sections. These sections can be
torn open for providing holes for lead cables at desired points.
A terminal cover can’t be used in the case of using an actuator sold separately.
Separator (Sold Separately)
Use a Separator when it is difficult to
provide a sufficient insulation distance or
when using the Switch near metal parts or
copper wires.
Operation Information
Model
SEPARATOR FOR Z
Operation Information
Application Soldering terminal use
Material
Phenol resin
Vinyl chloride
Mounting direction
Side mounting
Side mounting
AP-A
AP1-A
AP-Z
Screw terminal use
AP-B
AP1-B
Model
Remarks
---
Used for AP-A and AP-B
---
Metal press mold Side mounting
Note: Use a Terminal Cover for screw terminals fir DZ-series Switches with soldering terminals.
Dimensions (Unit: mm)
Terminal Covers
AP-A
Soldering Terminal Use
(Phenol Resin)
4.3
＋0.2
0
52.8
25.4
4.3
＋0.2
0
8
R2.15
16.3
6.5
R2.15
AP-B
Screw Terminal Use
(Phenol Resin)
4.3
＋0.2
0
53.8
25.4
4.3
＋0.2
0
8
20.2
6.5
8
21
8
21
Note: The Cover has five thin, easy-to-separate
portions for easy lead wire connections.
Note: The Cover has six thin, easy-to-separate
portions for easy lead wire connections.
54.4
AP1-A
Soldering Terminal Use
(Metal Press Mold)
4.3
＋0.2
0
AP1-B
4.3
＋0.2
0
8
17.1
R2.15
7.2
55.4
4.3
＋0.2
0
25.4
4.3
＋0.2
0
8
R2.15
7
21
25.4
Screw Terminal Use
(Metal Press Mold)
8.5 22.6
8.5 22.6
Note: The Cover has five holes for easy lead wire connections.
Note: The Cover has six holes for easy lead wire connections.
2-φ4.2
AP-Z
Soldering or Screw Terminal Use
(Vinyl Chloride)
押え板
（t1鋼板）
21
52.8
25.4
7
Cable Pull-out Dimension
A−A′
断面
21
39
46
14
B−B′
断面
13
φ6
15
φ8
A
B
座金ナッ
ト
13
15
M3×20プラス小ね
じ
（平座金、
座金ナッ
ト付）
12
A′
B′
Note: A 6-dia. or 8-dia. cable can be
used by cutting the cable pull-out
hole to the size of the cable to be
used.
Note: Each dimension has a tolerance of
±0.4
mm unless otherwise specified. (±0.8 mm for the AP-Z)
Separator
2-φ4.5
13.5
27
±0.5
25.4
±0.2
49.2
±0.5
11.9
t＝0.51
Note: 1. Each dimension has a tolerance of
±0.4
mm unless otherwise specified.
2. The material is EAVTC (Epoxide Alkyd Varnished Tetron Cloth) and its heat-resisting
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