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SW520

NO - DP - ST

The SW520 is designed for use in telecommunication 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 SW520 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 SW520, however, optionally it can be excluded from the specification.  This compact contactor can be busbar mounted vertically or horizontally, but 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.

SW520 Technical Information

Application
InterruptedRating ( Ith )Uninterrupted
Thermal Current Rating - 500A
Intermittent Current Rating:
30% Duty - 915A
40% Duty - 790A
50% Duty - 705A
60% Duty - 645A
70% Duty - 600A
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 500A 50mV

Mechanical Durability > 1,000,000 Cycles
Coil Voltage Available (Us) (Rectifier board required for A.C.) 6 - 240V

SW520 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
M5 Tapped Holes

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  • The SW520 has the following optional components available: