Page 127 - Motor protection and control Manual motor starters, contactors and overload relays

ABB MOTOR PROTECTION AND CONTROL 3/53

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AF400 … AF750 3-pole contactors
Technical data

Main pole - Utilization characteristics according to IEC 03
Contactor types AC / DC operated AF400 AF460 AF580 AF750
Standards IEC 60947-1 / 60947-4-1 and EN 60947-1 / 60947-4-1
Rated operational voltage Ue max. 1000 V
Rated frequency (without derating) 50/60 Hz
Conventional free-air thermal current Ith
acc. to IEC 60947-4-1, open contactors, θ ≤ 40 °C 600 A 700 A 800 A 1050 A
With conductor cross-sectional area (3) 2x185 mm² 2x240 mm² 2x240 mm² 800 mm² (4)
AC-1 Utilization category
For air temperature close to contactor
Ie / Rated operational current AC-1 θ ≤ 40 °C 600 A 700 A 800 A 1050 A
Ue max. ≤ 690 V, 50/60 Hz θ ≤ 55 °C 500 A 600 A 700 A 875 A
θ ≤ 70 °C 400 A 480 A 580 A 720 A
Ie / Rated operational current AC-1 θ ≤ 40 °C 600 A 700 A 800 A 1000 A
Ue max. ≤ 1000 V, 50/60 Hz θ ≤ 55 °C 500 A 600 A 700 A 875 A
θ ≤ 70 °C 400 A 480 A 580 A 720 A
With conductor cross-sectional area 2x185 mm² 2x240 mm² 2x240 mm² 800 mm² (4)
AC-3 Utilization category
For air temperature close to contactor θ ≤ 55 °C
Ie / Max. rated operational current AC-3 (1)
220-230-240 V 400 A 460 A 580 A 750 A
380-400 V 400 A 460 A 580 A 750 A
415 V 400 A 460 A 580 A 750 A
M 3-phase motors 440 V 400 A 460 A 580 A 750 A
3 500 V 400 A 460 A 580 A 750 A
690 V 350 A 400 A 500 A 650 A
1000 V 155 A 200 A 250 A 300 A
Rated operational power AC-3 (1)
220-230-240 V 110 kW 132 kW 160 kW 220 kW
380-400 V 200 kW 250 kW 315 kW 400 kW
1500 r.p.m. 50 Hz 415 V 220 kW 250 kW 355 kW 425 kW
M 1800 r.p.m. 60 Hz 440 V 220 kW 250 kW 355 kW 450 kW
3 3-phase motors 500 V 250 kW 315 kW 400 kW 520 kW
690 V 315 kW 355 kW 500 kW 600 kW
1000 V 220 kW 280 kW 355 kW 400 kW
Rated making capacity AC-3 10 x Ie AC-3 acc. to IEC 60947-4-1
Rated breaking capacity AC-3 8 x Ie AC-3 acc. to IEC 60947-4-1
Short-circuit protection device for contactors
without thermal overload relay
Motor protection excluded (2)
Ue ≤ 500 V AC - gG type fuse 630 A 800 A 1000 A 1000 A
Rated short-time withstand current Icw 1 s 4600 A 4600 A 7000 A 7000 A
at 40 °C ambient temperature, 10 s 4400 A 4400 A 6400 A 6400 A
in free air from a cold state 30 s 3100 A 3100 A 4500 A 4500 A
1 min 2500 A 2500 A 3500 A 3500 A
15 min 840 A 840 A 1300 A 1300 A
Maximum breaking capacity
cos φ = 0.45 at 440 V 4000 A 5000 A 6000 A 7500 A
(cos φ = 0.35 for Ie > 100 A) at 690 V 3500 A 4500 A 5000 A 7000 A
Power dissipation per pole Ie / AC-1 30 W 42 W 32 W 50 W
Ie / AC-3 16 W 21 W 17 W 28 W
Max. electrical switching AC-1 300 cycles/h 300 cycles/h
frequency AC-3 300 cycles/h 300 cycles/h
AC-2, AC-4 60 cycles/h 60 cycles/h
(1) For the corresponding kW/A or hp/A values of 1500 r.p.m, 50 Hz or 1800 r.p.m, 60 Hz, 3-phase motors, see "Motor rated operational powers and currents".
For AC-3e utilization category, please consult your ABB local sales organization.
(2) For the protection of motor starters against short circuits, see "Coordination with short-circuit protection devices".
(3) Conductors with preparation.
(4) Max. connection bar width 50 mm.
(5) Max. connection bar width 100 mm.

1SFC101110C0201 - Rev. E 1SFC101110C0201