Air Circuit Breakers
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Air Circuit Breakers
Salient features:
  • U-POWER offers complete range from 400A to 6300A in four optimized frame sizes
  • Available in 3 & 4 Pole with options of 50%, 100% & 200% Neutral, as manually & electrically operated in both draw-out & fixed versions
  • High electrical life, which can be further extended upto mechanical life by replacing contacts
  • Complete range with RoHS compliance
  • High short time withstand capacity (lew) equal to leu & Ics, to support discrimina tion, for fault upto leu
  • Superior safety features - arc chute interlock, smart racking shutter, ready to close, key locks,etc.
  • Unique fascia architecture to provide complete information on electrical accessories mounted on the ACB, without opening the panel door
  • Right aligned design to offer better utilization of space, especially in a multi-tier panel design
  • Unique low watt loss pole design and volt-metric releases
  • High current carrying capacrty & no de-rating at higher ambient temperatures
  • Dimensions are optimized without compromising terminal width and inter-phase clearances
  • Offers flat terminal as standard, which provide flexibility for accommodating various link
  • Conforms to IEC 60947-2, EN60947-2, IS13947(Part2), GB 14048.2and Tested at: KEMA, TILVA, CPRI, ERDA
Frame 1 2 3 4
Rated Uninterrupted
Current (In) 		400-2000 630-3200 4000 5000
6300
Version S S H V H V H V
Rated operational
voltage at 50/60 Hz. 		      upto 690V        
Rated insulation
voltage at 50/60 Hz. 		      1000V        
Rated impulse withstand
voltage 		      12kV (Main Circuit)        
Suitability for Isolation       Yes        
Degree of Protection on
Breaker front 		      IP53 Intrinsic, IP55 available        
Pollution degree suitability       3        
Utilization Category       B        
Compliance       EN60947-2, IEC 60947-2        
Rated ultimate S.C.Breaking
Capacity Icu(kA) 400/415V 		65 65 80 100 80 100 80 100
Rated Service S.C.Breaking
Capacity Ics(kA) 400/415V 		      100% Icu        
Rated Short Time Withstand                
Capacity Icw(kA) 0.5Sec. 65 65 80 100 80 100 80 100
1.0Sec. 65 65 75 85 80 100 80 100
3.0Sec. 36 36 50 57 50 57 50 57
Mechanical Life with
maintenance 		20000 15000 10000 5000
Electrical Life with
maintenance 		20000 15000 10000 5000
Electrical Life without
maintenance 		10000 5000 5000 2500

  
 
 
 
Comprehensive range of micro-controller based protection units:
UN-RS3 (LSIG + Metering + Extra Protections + Communication)
Real time on-line graphical display of protection characteristics.
High resolution back lit LCD display of all metering parameters (V, I, pf, energy, power, harmonics, frequency)
Additional protections for voltage & frequency variation, undercurrent, reverse power, temperature rise, REF, earth leakage
MODBUS-RTU protocol based communication & breaker control

UN-RS2 (LSIG + Metering + Communication)
Self powered LSIG protection with current & time delay adjustability
Local & remote annunciation for cause of tripping
Display of phase and neutral current
MODBUS-RTU protocol based data acquisition and BMS compatibility

UN-RS1 (LSI + Metering)
Adjustable LI/LSI protections
Local & remote annunciation for cause of tripping
Display of phase and neutral current