Datasheet
CA08102001E
45-7
Circuit Breakers & Supplementary Protectors
45
15 – 2500 Amperes for UL, CSA & IEC Applications
Frame Sizes EG through RG
Table 45-3. EG through RG Electrical Characteristics
125 amperes is the maximum UL and CSA rating for the EG.
630 amperes is not a UL or CSA listed rating. 600 amperes is the maximum UL and CSA rating for the LG.
1200 amperes is the maximum UL and CSA rating for the NG.
See footnotes for exceptions.
Thermal overload release set to the lower value.
Thermal overload release set to the upper value.
Not suitable for dc switching.
Technical Data EG JG LG NG RG
Maximum Rated Current I
n
Depending on the Version
160 A
250 A 400, 630 A
800, 1200, 1600 A
1600, 2000, 2500 A
Rated Insulation Voltage U, According to IEC 60947-2
Main Conducting Paths
Auxiliary Circuits
500 Vac
500 Vac
750 Vac
690 Vac
750 Vac
690 Vac
750 Vac
690 Vac
750 Vac
690 Vac
Rated Impulse Withstand Voltage U
imp
Main Conducting Paths
Auxiliary Circuits
6 kV
4 kV
8 kV
4 kV
8 kV
4 kV
8 kV
4 kV
8 kV
4 kV
Rated Operational Voltage U
e
IEC
NEMA
690 Vac
600 Y/347 Vac
690 Vac
600 Vac
690 Vac
600 Vac
690 Vac
600 Vac
690 Vac
600 Vac
UL and CSA Listed Yes
Yes
Yes
Yes
Yes
Permissible Ambient Temperature -20 to +70°C -20 to +70°C -20 to +70°C -5 to +60°C -5 to +60°C
Permissible Load for Various Ambient Temperatures
Close to the Circuit Breaker, Related to the Rated
Current of the Circuit Breaker
■ Circuit Breakers for Plant Protection
– At 40°C
– At 50°C
– At 55°C
– At 60°C
– At 70°C
100%
96%
93%
91%
86%
100%
92%
87%
83%
73%
100%
96%
94%
92%
88%
100%
94%
90%
87%
80%
100%
96%
93%
90%
84%
100%
91%
86%
82%
70%
—
100%
91%
85%
81%
—
—
100%
91%
85%
81%
—
■ Circuit Breakers for Motor Protection
– At 40°C
– At 50°C
– At 55°C
– At 60°C
– At 70°C
—
—
—
—
—
100%
100%
100%
100%
90%
100%
100%
100%
100%
90%
—
—
—
—
—
—
—
—
—
—
■ Circuit Breakers for Starter Combinations
and Isolating Circuit Breakers
– At 40°C
– At 50°C
– At 55°C
– At 60°C
– At 70°C
100%
100%
96%
91%
86%
100%
100%
96%
82%
88%
100%
100%
95%
90%
84%
100%
91%
85%
81%
—
100%
91%
85%
81%
—
Rated Short Circuit Breaking Capacity (dc)
Not for Circuit Breakers for Motor Protection
(Time Constant = 10 rms)
2 Conducting Paths in Series
For EG to LG up to 250 Vdc
NEMA (Time Constant = 8 rms)
2 Conducting Paths in Series
250 Vdc
42 kA Max.
42 kA Max.
42 kA Max.
42 kA Max.
42 kA Max.
42 kA Max.
Main Switch Characteristics According to IEC 60947-2
in Combination with Lockable Rotary Drives
Yes Ye s Yes Yes Yes
Rated Short Circuit Breaking Capacity According
to IEC 60947-2 (at ac 50/60 Hz)
Rated Short Circuit Breaking Capacity See Table 45-2 on Page 45-5
Endurance (Operating Cycles) 10,000 10,000 8,000 3,000 3,000
Maximum Switching Frequency 300 1/h 240 1/h 240 1/h 60 1/h 20 1/h