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SW250

NO - SP - ST

The SW250 is designed for use in telecommunications and power distribution applications where an uninterrupted load is switched.  These contactors are primarily for use with Direct Current loads but can also be used with Alternating Currents.

The SW250 features double breaking main contacts with silver alloy tips which are weld resistant, hard wearing and have excellent conductivity.  Silver plating on the main contacts is standard for the SW250, however optionally it can be excluded from the specification.  The SW250 is a compact contactor which can be busbar mounted vertically or horizontally, if mounted vertically the coil should be at the bottom.  If the coil is required at the top, we can adjust the contactor to compensate for this.

SW250 Technical Information

Application
InterruptedRating ( Ith )Uninterrupted
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 (Icn) 5ms Time Constant: (In accordance with UL583*)
Blowouts -
No Blowouts -
Rated Fault Current Breaking Capacity (Icn) Resistive Load: (In accordance with UL508*)
Blowouts -
No Blowouts 0A at 60V D.C.
Maximum Recommended Contact Voltages
Blowouts 0V 0V
No Blowouts 0V 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

Component Configurations
Auxiliary
STANDARD
STANDARD - GOLD
V3
V3 - GOLD
Coil Suppression
DIODE
DIODE AND RESISTOR
BI-DIRECTIONAL DIODE
Coil Terminations
AMP TAGS
FLYING LEADS
VACCUM IMPREGNATION
Mounting Options
'L' Shaped Bracket Kit

SW250 Resources

SW250 Data Sheet

  • Format: .pdf
  • Size: 868kb

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  • The SW250 has the following optional components available: