Specifications

C2
GE Limitamp
®
Medium Voltage Motor Control
5kV Load-break Switches
C
Table C.1 IC1074 Load-break Switch Technical Specifications
Type 600-Ampere Drawout Switch
(Fuse)
600-Ampere Stationary Switch
(Fused or Unfused)
1200-Ampere Stationary Switch
(Fused or Unfused)
Ratings
Maximum nominal rating 4760 volts 4760 volts 4760 volts
Unfused rating
Vented enclosure
Non-vented enclosure
N/A
N/A
600 amperes
540 amperes
1200 amperes
1020 amperes
Fused rating
Vented enclosure
Non-vented enclosure
600 amperes
540 amperes
600 amperes
540 amperes
960 amperes
840 amperes
Make/Break rating 600 amperes 600 amperes 1200 amperes
Fault-closing rating (asym)
Fused
Unfused
61,000 amperes
N/A
61,000 amperes
61,000 amperes
61,000 amperes
61,000 amperes
Momentary rating (asym)
Unfused
N/A 61,000 amperes 61,000 amperes
Basic impulse level (BIL) 60 kV 60 kV 60 kV
Short-circuit interrupting capacity (fused)
2400 volts
4800 volts
200 MVA (sym)
400 MVA (sym)
200 MVA (sym)
400 MVA (sym)
200 MVA (sym)
400 MVA (sym)
Dimensions
Dimensions in inches (W x H x D) Dimensions in inches (W x H x D) Dimensions in inches (W x H x D)
One-high construction 34 x 90 x 30 38 x 90 x 30 38 x 90 x 30
One-high construction (option) 42 x 90 x 30 N/A N/A
Two-high construction 44 x 90 x 30 N/A N/A
Cable space
Incoming 38”-wide case N/A 2-500 kcmil per phase with or
without stress cones
2-500 kcmil per phase with or
without stress cones
Outgoing 38”-wide case N/A
2-500 kcmil per phase with or
without stress cones
2-500 kcmil per phase with or
without stress cones
Incoming (for bus only)
34”-wide case 2-500 kcmil per phase without stress cones
1-500 kcmil per phase with stress cones
N/A N/A
42”-wide case 2-750 kcmil per phase with or without stress cones N/A N/A
44”-wide case 1-500 kcmil per phase with or without stress cones N/A N/A
Outgoing
34”-wide case
42”-wide case
44”-wide case
1-500 kcmil per phase with stress cones
2-750 kcmil per phase with or without stress cones
1-300 kcmil per phase with or without stress cones
N/A
N/A
N/A
N/A
N/A
N/A