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General-purpose Basic Switch A
High-capacity Switch Capable of Handling 20 A Loads with Large Inrush Currents
Same shape as OMRON Z Basic Switches except in pin plunger position, yet endures inrush currents
as large as 75 A.
A-20G j-j
1234
1.Ratings
20:20 A (250 V AC)
2.Contact Gap
G:0.5 mm
3.Actuator
None:Pin plunger
D:Short spring plunger
Q:Panel mount plunger
Q21:Panel mount cross roller plunger
Q22:Panel mount roller plunger
V:Hinge lever
V2:Hinge roller lever
V21:Short hinge lever
V22:Short hinge roller lever
4.Terminals
None:Solder terminal
B:Screw terminal (with toothed washer)
Note:Refer to Terminals in Model Z for solder and screw terminals.
Ratings
Note:
1.The above values are for steady-state current.
2.Inductive load has a power factor of 0.4 min. (AC) and a time constant of 7 ms max. (DC).
mp load has an inrush current of 10 times the steady-state current.
4.Motor load has an inrush current of 6 times the steady-state current.
5.
The ratings values apply under the following test conditions: Ambient temperature: 20±2°C Ambient humidity: 65±5%
Operating frequency: 20 operations/min
Characteristics
Note:
1.The value is for the pin plunger . (Contact your OMRON representative for other models.)
2.Malfunction: 1 ms max.
UL508 (File No. E41515)
CSA C22.2 No.55 (File No. LR21642)
Mechanical Life Expectancy
A-20G
Electrical Life Expectancy
A-20G
Overtravel (mm)Switching current (A)
N u m b e r o f o p e r a t i o n s (x 10 )
6N u m b e r o f o p e r a t i o n s (x 10 )
610753210.70.50.30.20.1
0.10.20.30.40.50.60.70.8
Ambient temperature: 20±2°C
Ambient humidity: 65±5%Without load
Operating frequency: 240 operations/min
Ambient temperature: 20±2°C Ambient humidity: 65±5%
Operating frequency: 20 operations/min
125 VAC,cos φ = 0.4
250 VAC, cos φ
= 0.4
250 VAC,
cos φ = 1
10753210.70.50.30.20.1
0510152025
125 VAC, cos φ = 1
2.Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions.
Three, M4 x 5.5
Terminal screws (with toothed washer)
17.45±0.2
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
4.2–0.025 2.3 dia.
2.3R (stainless-steel plunger)
11.9SR (stainless-steel plunger)