Cutler Hammer, Div of Eaton Corp Circuit Breakers, Supplementary Protectors Technical Specifications

45-26

Circuit Breakers & Supplementary Protectors
250 – 630 Amperes

August 2006

LG-Frame

LG-Frame

Typical LG-Frame Circuit Breaker

Interrupting Capacity Ratings

Table 45-41. UL 489/IEC 60947-2 Interrupting Capacity Ratings

Circuit
Breaker
Type

LGE630 3, 4 65 65 35 35 35 18 12 6 10 10 10

LGS630 3, 4 85 85 50 50 50 25 20 10 22 22 22

LGH630 3, 4 100 100 70 70 65 35 25 13 42 42 35

LGC630 3, 4 200 200 100 100 100 50 30 15 42 42 42

LGU630 3, 4 200 200 150 150 150 65 35 18 42 42 42

LGX630 3, 4 300 200 200 200 200 65 35 18 50 50 50









Number
of Poles

dc rating apply to substantially non-inductive circuits.
2-pole circuit breaker, or two poles of 3-pole circuits.
Time constant is 3 milliseconds minimum at 10 kA and 8 milliseconds minimum at – kA.
3-poles in series. 750 Vdc ratings available (4-poles in series, not UL listed). Contact Eaton.

Interrupting Capacity (kA rms Symmetrical Amperes) (kA)

Volts ac (50/60 Hz)

240 – 240 380 – 415 480 600 690 250

Icu Ics Icu Ics Icu Ics Icu Ics

Volts dc





600



45

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