- Designed for use in telecommunications and power distribution applications where an uninterrupted load is switched.
- Primarily for use with Direct Current loads but can also be used with Alternating Currents.
- Silver plating on the main contacts is standard.
- Adaptable Mounting options, in any orientation (seek technical advice for full mounting considerations).
Spare Parts are not available – this contactor is deemed non-serviceable.
SW250 Technical Info
| Application | InterruptedRating (Ith) | UninterruptedRating (Ith) |
|---|---|---|
| Thermal Current Rating | - | 250A |
| Intermittent Current Rating: | ||
| 30% Duty | - | 455A |
| 40% Duty | - | 395A |
| 50% Duty | - | 355A |
| 60% Duty | - | 325A |
| 70% Duty | - | 300A |
| Rated Fault Current Breaking Capacity (lcn) 5ms Time Constraint: (In accordance with UL583*) | ||
| Blowouts | - | |
| No Blowouts | - | |
| Rated Fault Current Breaking Capacity (lcn) Resistive Load: (In accordance with UL508*) | ||
| Blowouts | - | |
| No Blowouts | 375A at 60V D.C. | |
| Maximum Recommended Contact Voltages | ||
| Blowouts | - | - |
| No Blowouts | - | 60V |
| Typical Voltage Drop per pole across New Contacts at 250A | 50mV | |
| Mechanical Durability | >1,000,000 Cycles | |
| Coil Voltage Available (Us) (Rectifier board required for A.C.) | >6 - 240V | |
SW250 Features
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| Component | Configurations |
|---|---|
| AC Rectifier | |
| Auxiliary | |
| Coil Suppression | |
| Coil Termination | |
| Contact Tip | |
| Fixed Contact Terminal | |
| Magnetic Latching | |
| Manual Override | |
| Mounting | |
| Vacuum Impregnation |
