Building Automation
Industrial Automation
Power Automation & Safety
Bangladesh Distributor
A-20G-B
General-purpose Basic Switch
Image
High-capacity, Pin plunger (2.3 dia., Stainless steel plunger), Snap action, Self-reset type, Single-Pole, Double-Throw type, SPDT, Screw terminal (M4)
| Actuator |
Pin plunger (2.3 dia., Stainless steel plunger) |
|---|---|
| Sensitivity |
Standard sensitivity |
| Contact form |
SPDT |
| Terminal |
Screw terminal (M4) |
| Rated current |
20A |
| Degree of protection |
General type IEC60529 (JEM): IP00 |
- Ratings/Performance
As of August 8, 2016
| Actuator | Pin plunger (2.3 dia., Stainless steel plunger) |
|---|---|
| Sensitivity | Standard sensitivity |
| Operation type | General type |
| Operating mechanism | Snap action |
| Switching mechanism | Self-reset type |
| Contact method | Single-Pole, Double-Throw type |
| Contact form | SPDT |
| Contact gap | 0.5 mm |
| Terminal | Screw terminal (M4) |
| Load | High-capacity |
| Rated current | 20A |
| Ratings (AC) Non-Inductive load | Rated voltage: 125 VAC / Resistive load: 20 A(NC) 20 A(NO) / Lamp load: 7.5 A(NC) 7.5 A(NO) Rated voltage: 250 VAC / Resistive load: 20 A(NC) 20 A(NO) / Lamp load: 7.5 A(NC) 7.5 A(NO) Rated voltage: 500 VAC / Resistive load: 15 A(NC) 15 A(NO) / Lamp load: 4 A(NC) 4 A(NO) |
| Ratings (AC) Inductive load | Rated voltage: 125 VAC / Inductive load: 20 A(NC) 20 A(NO) / Motor load: 12.5 A(NC) 12.5 A(NO) Rated voltage: 250 VAC / Inductive load: 20 A(NC) 20 A(NO) / Motor load: 8.3 A(NC) 8.3 A(NO) Rated voltage: 500 VAC / Inductive load: 10 A(NC) 10 A(NO) / Motor load: 2 A(NC) 2 A(NO) |
| Ratings (DC) Non-Inductive load | Rated voltage: 8 VDC / Resistive load: 20 A(NC) 20 A(NO) / Lamp load: 3 A(NC) 1.5 A(NO) Rated voltage: 14 VDC / Resistive load: 20 A(NC) 20 A(NO) / Lamp load: 3 A(NC) 1.5 A(NO) Rated voltage: 30 VDC / Resistive load: 6 A(NC) 6 A(NO) / Lamp load: 3 A(NC) 1.5 A(NO) Rated voltage: 125 VDC / Resistive load: 0.5 A(NC) 0.5 A(NO) / Lamp load: 0.5 A(NC) 0.5 A(NO) Rated voltage: 250 VDC / Resistive load: 0.25 A(NC) 0.25 A(NO) / Lamp load: 0.25 A(NC) 0.25 A(NO) |
| Ratings (DC) Inductive load | Rated voltage: 8 VDC / Inductive load: 20 A(NC) 20 A(NO) / Motor load: 12.5 A(NC) 12.5 A(NO) Rated voltage: 14 VDC / Inductive load: 15 A(NC) 15 A(NO) / Motor load: 12.5 A(NC) 12.5 A(NO) Rated voltage: 30 VDC / Inductive load: 5 A(NC) 5 A(NO) / Motor load: 5 A(NC) 5 A(NO) Rated voltage: 125 VDC / Inductive load: 0.05 A(NC) 0.05 A(NO) / Motor load: 0.05 A(NC) 0.05 A(NO) Rated voltage: 250 VDC / Inductive load: 0.03 A(NC) 0.03 A(NO) / Motor load: 0.03 A(NC) 0.03 A(NO) |
| Ratings explanation | Lamp load has an inrush current of 10 times the steady-state current. Inductive load has a power factor of 0.4 Min. (AC) and a time constant of 7 ms Max. (DC). Motor load has an inrush current of 6 times the steady-state current. |
| Inrush current | NC: 75 A NO: 75 A |
| Ambient temperature | Operating : -25 to +80 ℃ Storage : -25 to 80 ℃ （ with no icing or condensation ） |
| Ambient humidity | Operating: 35 to 85%RH Storage: 35 to 85%RH |
| Speed of permissible operation | 0.01 mm/s to 1000 mm/s |
|---|---|
| Permissible operating frequency （Mechanically） | 240 operations / 1 minute Max. |
| Permissible operating frequency （Electrically） | 20 operations / 1 minute Max. |
| Contact resistance | 15 mΩ (Initial value. Measuring method is voltage drop method at 1 A, 6 to 8 VDC.) |
| Insulation resistance | Between each terminal of the same polarities: 100 MΩ min. Between live-metallic part and ground: 100 MΩ min. Between each terminal and non-live-metallic part: 100 MΩ min. (at 500 VDC Megger) |
| Dielectric strength | Between each terminal of the same polarities: 1000 V min. Between live-metallic part and ground: 2000 V min. Between each terminal and non-live-metallic part: 2000 V min. (50/60 Hz for 1 min) |
| Mechanical durability | 1,000,000 operations Min. |
| Electrical durability | 500,000 operations Min. (rating load) |
| Vibration resistance （Malfunction） | Vibration frequency range: 10 to 55 Hz, Double amplitude: 1.5 mm, Malfunction: 1 ms max. at the free position and the total travel position. |
| Shock resistance （Destruction） | 1,000 m/s**2 |
| Shock resistance （Malfunction） | Malfunction time is 1 ms Max. at the free position and the total travel position at 300 m/s**2. |
| Degree of protection | General type IEC60529 (JEM): IP00 |
| Mounting Method | Mounting with screw |
| Operating Force （OF） | Standard value 3.92 to 6.13 N |
|---|---|
| Release Force （RF） | Standard value 2.79 N min. |
| Pre-Travel （PT） | Standard value 1.3 mm max. |
| Over-Travel （OT） | Standard value 0.25 mm min. |
| Movement Differential （MD） | Standard value 0.2 mm max. |
| Operating Position （OP） | Standard value 15.9 to 16.7 mm |
As of August 8, 2016
- Mounting holes
As of August 8, 2016
Screw mounting hole dimensions
As of August 8, 2016
- Type of terminal and form
As of August 8, 2016
As of August 8, 2016
- Terminals
As of August 8, 2016
接点構成図
As of August 8, 2016
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