Page 265 - Motor protection and control Manual motor starters, contactors and overload relays

ABB MOTOR PROTECTION AND CONTROL 3/191

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GF875 ... GF1050 contactors
Technical data

Main pole - Utilization characteristics according to IEC 03
Contactor types AC / DC operated GF875 GF1050
Standards IEC 60947-1 / 60947-4-1 and EN 60947-1 / 60947-4-1
Rated operational voltage Ue max. 1500 V DC
Conventional free-air thermal current Ith
acc. to IEC 60947-4-1
For air temperature close to contactor θ ≤ 60 °C 875 A 1050 A
θ ≤ 70 °C 650 A 850 A
With conductor cross-sectional area 600 mm² 800 mm²
DC-PV3 Utilization category for air temperature
close to contactor
Ue max. ≤ 1500, Iscl = 210 A
θ ≤ 60 °C 875 A 1050 A
θ ≤ 70 °C 650 A 850 A
DC-PV4 Utilization category for air temperature
close to contactor
Ue max. ≤ 1500, Iscl = 256 A 325 A 390 A
Maximum electrical switching frequency 15 cycles/h

Main pole - Utilization characteristics according to UL / CSA
Contactor types AC / DC operated GF875 GF1050
Standards UL 60947-4-1
Thermal current Ith 875 A 1050 A
DC general use acc. to UL60947-4-1, Ue max. ≤ 1500 210 A 210 A

General technical data
Contactor types AC / DC operated GF875 GF1050
Rated insulation voltage Ui
acc. to IEC 60947-4-1 1500 V
acc. to UL 1500 V
Rated impulse withstand voltage Uimp.
Main contacts 8 kV
Coil terminal 4 kV
Ambient air temperature close to contactor
Operation -40 to +70 °C
Storage -40 to +70 °C
Climatic withstand acc. to IEC 60068-2-30
Maximum operating altitude (without derating) 2000 m
Rated short-time withstand current Icw
at 40 °C ambient temp. in free air from a cold state
1 s 6218 A 7600 A
10 s 5184 A 6336 A
30 s 1450 A 5072 A
1 min 3109 A 3800 A
15 min 1139 A 1392 A
Mechanical durability
Number of operating cycles, 1500 V DC
50 000
Max. switching frequency 15 cycles/h

1SBC100503S0201