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WST1215-125
Winston
Main features
· 125AContact switching capability
· It has a set of normally open contacts
· Coil power consumption is：20～26WMin～Max
· Scope of application：Power on / off control of DC power supply systems such as oil pump startup,
battery truck,electric forklift, electric winch, electric vehicle, excavator, automobile air conditioner, etc。
· Product features：Small size, high breaking capacity, sealing protection, and can adapt to harsh
service environment。
Application
Interpretation of product model
Example：WST1215-125/24；Indicates: a group of normally open contacts, sealed DC contactor with current of 125A and coil voltage of 24V
Performance parameter
| Model | WST1215-125/□ |
| Contact form | 1D (SPST-NO) |
| Contact material | Silver alloy |
| Contact load (resistive load) | 125A |
| Contact pressure drop | ≤80mV@125A |
| Insulation resistance | Min. 100MΩ at 500VDC |
| Dielectric Strength | 1000VAC 50 HZ/60 HZ (1 minute) Leakage current less than 1mA |
| Instantaneous maximum current | 375A ,≤1S |
| Pull in time(ms) | Max. 30mSec |
| Release time(ms) | Max. 50mSec. |
| Pull-in voltage (DC V) | ≤70% US |
| Release voltage (DC V) | 5～40% US |
| Operating ambient temperature | -25℃~+55℃ |
| Mechanical life | ≥200,000 second |
| Degree of protection | IP67 |
| Working system | Short term working system |
| Vibration | （10～200）Hz acceleration ≤3.5g |
| To attack | （60） Times / minute acceleration 6g |
Coil parameters
| Model | Coil voltage (V) | Coil operating voltage（V） | Pull-in voltage（V） | Release voltage（V） | Starting current（A） | Power waste（W） |
| WST1215-125/□ | 12 | 0.85US～1.1US | ≤70% | 5～40% | ≤2.2 | 22～26 |
| 24 | ≤1.1 | 22～26 | ||||
| 48 | ≤0.6 | 22～26 | ||||
| 60 | ≤0.45 | 22～26 | ||||
| 72 | ≤0.38 | 22～26 |
Outline installation dimensions and circuit schematic diagram
| Dimension（mm） | Tolerance grade not noted（mm） |
| 0～30 | ±0.3 |
| 30～60 | ±0.5 |
| 60～100 | ±1 |
| ＞100 | ±2 |
Matters needing attention
1.When installing the contactor, the tightening torque of the main circuit wiring screw and nut is 6 ~ 8N. M; The tightening torque of control circuit wiring screw and nut is 1 ~ 1.5N. m。
2. The driving circuit power of the product coil must be greater than or equal to the product coil power, otherwise the cutting capacity of the product will be reduced。
3. The voltage continuously applied to the coil shall not exceed the maximum allowable voltage. Otherwise, the abnormal heating of the coil will shorten the service life of the insulation layer。
Packaging & Shipping
Main features
· 125AContact switching capability
· It has a set of normally open contacts
· Coil power consumption is：20～26WMin～Max
· Scope of application：Power on / off control of DC power supply systems such as oil pump startup,
battery truck,electric forklift, electric winch, electric vehicle, excavator, automobile air conditioner, etc。
· Product features：Small size, high breaking capacity, sealing protection, and can adapt to harsh
service environment。
Application
Interpretation of product model
Example：WST1215-125/24；Indicates: a group of normally open contacts, sealed DC contactor with current of 125A and coil voltage of 24V
Performance parameter
| Model | WST1215-125/□ |
| Contact form | 1D (SPST-NO) |
| Contact material | Silver alloy |
| Contact load (resistive load) | 125A |
| Contact pressure drop | ≤80mV@125A |
| Insulation resistance | Min. 100MΩ at 500VDC |
| Dielectric Strength | 1000VAC 50 HZ/60 HZ (1 minute) Leakage current less than 1mA |
| Instantaneous maximum current | 375A ,≤1S |
| Pull in time(ms) | Max. 30mSec |
| Release time(ms) | Max. 50mSec. |
| Pull-in voltage (DC V) | ≤70% US |
| Release voltage (DC V) | 5～40% US |
| Operating ambient temperature | -25℃~+55℃ |
| Mechanical life | ≥200,000 second |
| Degree of protection | IP67 |
| Working system | Short term working system |
| Vibration | （10～200）Hz acceleration ≤3.5g |
| To attack | （60） Times / minute acceleration 6g |
Coil parameters
| Model | Coil voltage (V) | Coil operating voltage（V） | Pull-in voltage（V） | Release voltage（V） | Starting current（A） | Power waste（W） |
| WST1215-125/□ | 12 | 0.85US～1.1US | ≤70% | 5～40% | ≤2.2 | 22～26 |
| 24 | ≤1.1 | 22～26 | ||||
| 48 | ≤0.6 | 22～26 | ||||
| 60 | ≤0.45 | 22～26 | ||||
| 72 | ≤0.38 | 22～26 |
Outline installation dimensions and circuit schematic diagram
| Dimension（mm） | Tolerance grade not noted（mm） |
| 0～30 | ±0.3 |
| 30～60 | ±0.5 |
| 60～100 | ±1 |
| ＞100 | ±2 |
Matters needing attention
1.When installing the contactor, the tightening torque of the main circuit wiring screw and nut is 6 ~ 8N. M; The tightening torque of control circuit wiring screw and nut is 1 ~ 1.5N. m。
2. The driving circuit power of the product coil must be greater than or equal to the product coil power, otherwise the cutting capacity of the product will be reduced。
3. The voltage continuously applied to the coil shall not exceed the maximum allowable voltage. Otherwise, the abnormal heating of the coil will shorten the service life of the insulation layer。
Packaging & Shipping
