General-purpose Basic Switch
A
High-capacity Switch Capable of Handling 20 A Loads with Large Inrush Currents
Ratings
Rated |
Non-inductive load (A) |
Inductive load (A) |
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Resistive |
Lamp load |
Inductive |
Motor load |
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NC |
NO |
NC |
NO |
NC |
NO |
NC |
NO |
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125 VAC |
20 |
7.5 |
20 |
12.5 |
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8 VDC |
20 |
3 |
1.5 |
20 |
12.5 |
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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).
3. Lamp 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:
(1) Ambient temperature: 20±2°C
(2) Ambient humidity: 65±5%RH
(3) Operating frequency: 20 operations/min
Certified Standard Ratings
Ask your OMRON representative for information on certified models.
UL/CSA (General ratings only)
Rated voltage |
A-20G |
125 VAC |
1 HP 10 A "L" |
250 VAC |
2 HP |
480 VAC |
20 A |
125 VDC |
0.5 A |
250 VDC |
0.25 A |
Characteristics
Operating speed |
0.01 mm to 1m/s * 1 |
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Operating frequency |
Mechanical |
240 operations/min |
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Electrical |
20 operations/min |
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Insulation resistance |
100 MΩ min. (at 500 VDC) |
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Contact resistance |
15 mΩ max. (initial value) |
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Dielectric strength |
1,000 VAC, 50/60 Hz for 1 min between |
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Vibration resistance |
Malfunction |
10 to 55 Hz, 1.5-mm double amplitude * 2 |
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Shock resistance |
Destruction |
1,000 m/s2 max. |
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Malfunction |
300 m/2 max. * 1 * 2 |
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Durability |
Mechanical |
1,000,000 operations min. |
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Electrical |
500,000 operations min. |
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Degree of protection |
IP00 |
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Degree of protection against electric shock |
Class I |
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Proof tracking index (PTI) |
175 |
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Ambient operating temperature |
-25 ° C to 80 ° C (with no icing) |
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Ambient operating humidity |
35% to 85%RH |
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Weight |
Approx. 22 to 58 g |
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1. The value is for the pin plunger. (Contact your OMRON representative for other models.)
2. Malfunction: 1 ms max.
Contact Specification
Contacts |
Shape |
Rivet |
Material |
Silver alloy |
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Gap (standard value) |
0.5 mm |
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Inrush current |
NC |
75 A max. |
NO |
75 A max. |