Page 128 - Motor protection and control Manual motor starters, contactors and overload relays

3/54 ABB MOTOR PROTECTION AND CONTROL

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AF1250 … AF2850 3-pole contactors
Technical data

Main pole - Utilization characteristics according to IEC
Contactor types AC / DC operated AF1250 AF1350 AF1650 AF2050 AF2650 AF2850
03
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 1260 A 1350 A 1650 A 2050 A 2650 A 2850 A
With conductor cross-sectional area (3) 1000 mm² (4) 1000 mm² (5) 1500 mm² (5) 2000 mm² (5) 3000 mm² (5) 3000 mm² (5)
AC-1 Utilization category
For air temperature close to contactor
Ie / Rated operational current AC-1 θ ≤ 40 °C 1260 A 1350 A 1650 A 2050 A 2650 A 2850 A
Ue max. ≤ 690 V, 50/60 Hz θ ≤ 55 °C 1040 A 1150 A 1450 A 1750 A 2350 A 2600 A
θ ≤ 70 °C 875 A 1000 A 1270 A 1500 A 2120 A 2300 A
Ie / Rated operational current AC-1 θ ≤ 40 °C 1260 A 1350 A 1650 A 2050 A 2650 A 2850 A
Ue max. ≤ 1000 V, 50/60 Hz θ ≤ 55 °C 1040 A 1150 A 1450 A 1750 A 2350 A 2600 A
θ ≤ 70 °C 875 A 1000 A 1270 A 1500 A 2120 A 2300 A
With conductor cross-sectional area 1000 mm² (4) 1000 mm² (5) 1500 mm² (5) 2000 mm² (5) 3000 mm² (5) 3000 mm² (5)
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 – 860 A 1060 A 1060 A – –
380-400 V – 860 A 1060 A 1060 A – –
415 V – 860 A 1060 A 1060 A – –
M 3-phase motors 440 V – 860 A 1060 A 1060 A – –
3 500 V – 800 A 970 A 970 A – –
690 V – 800 A 970 A 970 A – –
1000 V – 375 A 400 A 425 A – –
Rated operational power AC-3 (1)
220-230-240 V – 257 kW 315 kW – – –
380-400 V – 475 kW 560 kW – – –
1500 r.p.m. 50 Hz 415 V – 500 kW 630 kW 630 kW – –
M 1800 r.p.m. 60 Hz 440 V – 560 kW 710 kW 710 kW – –
3 3-phase motors 500 V – 560 kW 710 kW – – –
690 V – 800 kW 1000 kW 1000 kW – –
1000 V – 560 kW 600 kW 630 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 Please consult us for coordination with circuit-breaker
Rated short-time withstand current Icw 1 s 8000 A 10000 A 12000 A 12000 A 12000 A 12000 A
at 40 °C ambient temperature, 10 s 7200 A 8000 A 10000 A 10000 A 10000 A 10000 A
in free air from a cold state 30 s 5200 A 6000 A 7500 A 7500 A 7500 A 7500 A
1 min 4000 A 4500 A 5500 A 5500 A 5500 A 5500 A
15 min 1500 A 1600 A 2200 A 2200 A 2800 A 3000 A
Maximum breaking capacity
cos φ = 0.45 at 440 V 7500 A 10000 A 12000 A 8400 A 8400 A 8400 A
(cos φ = 0.35 for Ie > 100 A) at 690 V 7000 A – – – – –
Power dissipation per pole Ie / AC-1 80 W 80 W 80 W 125 W 200 W 200 W
Ie / AC-3 – 50 W 50 W – – –
Max. electrical switching AC-1 300 cycles/h 60 cycles/h 60 cycles/h 15 cycles/h 15 cycles/h
frequency AC-3 – 60 cycles/h – – –
AC-2, AC-4 – 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