URM
URM - NH3
Rated Breaking Test
Class
Rated Voltage
Standard(s) UL 248-13 IEC 60269-4 VDE 0636-4
[U n ]
Capacity
Voltage aR
700V AC - UL 690V AC - IEC
120kA 120kA
760V AC
500V DC /450V DC - IEC 30kA, L/R = 10ms, 550V DC 400A - 1000A, 500V DC 1100A - 1600A
UL File E180276
Time-Current Characteristics
R.M.S. Prospective Current [A] Full size graphs available upon request
Cut-Off Current Characteristics
Correction Curves
1500
1.2
1300
0.2 0.4 0.6 0.8 1.0 1.0 0.8 0.6 0.4 0.2 0
1100
L U ( V )
900 700
B K
500
200 400 600 800
200 400 600 800
B U (V ) AC
B U (V ) AC
0 0.2 0.4 0.6 0.8 1.0
Prospective Short Circuit Current [kA] (Symmetrical r.m.s.)
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