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RU280

NO - SP - ST

The Reduced Silver series are suitable for applications where infrequent switching is specified. In such applications the degradation of the tip is minimal and therefore a higher volume of silver is unnecessary.

Developed for Uninterrupted current applications the RU280 is typically used in line contactors or Power Distribution Systems.

The contactors have double breaking main contacts with silver alloy tips, which are weld resistant, hard wearing and have excellent conductivity. They are easy to install, with M5 tapped holes in the switch frame together with a range of mounting brackets. Mounting can be vertical or horizontal, when vertical the M10 contact studs should point upwards. If the requirement is for downwards orientation we can adjust the contactor to compensate for this.

RU280 Technical Information

Application
InterruptedRating ( Ith )Uninterrupted
Thermal Current Rating - 350A
Intermittent Current Rating:
30% Duty - 640A
40% Duty - 555A
50% Duty - 495A
60% Duty - 450A
70% Duty - 420A
Rated Fault Current Breaking Capacity (Icn) 5ms Time Constant: (In accordance with UL583*)
Blowouts 1500A at 96V D.C.
No Blowouts 1500A at 48V D.C.
Rated Fault Current Breaking Capacity (Icn) Resistive Load: (In accordance with UL508*)
Blowouts 525A at 96V D.C.
No Blowouts 525A at 60V D.C.
Maximum Recommended Contact Voltages
Blowouts 96V 96V
No Blowouts 48V 60V
Typical Voltage Drop per pole across New Contacts at 250A 40mV

Mechanical Durability > 3,000,000 Cycles
Coil Voltage Available (Us) (Rectifier board required for A.C.) 6 - 240V

RU280 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
PLUG
VACCUM IMPREGNATION

RU280 Resources

RU280 Data Sheet

  • Format: .pdf
  • Size: 830kb

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  • The RU280 has the following optional components available: