Page 124 - Motor protection and control Manual motor starters, contactors and overload relays

3/50 ABB MOTOR PROTECTION AND CONTROL

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AF09 ... AF38 3-pole contactors
Technical data

Main pole - Utilization characteristics according to IEC
Contactor types AC / DC operated AF09 AF12 AF16 AF26 AF30 AF38
03
Standards IEC 60947-1 / 60947-4-1 and EN 60947-1 / 60947-4-1
Rated operational voltage Ue max. 690 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 35 A 35 A 35 A 50 A 50 A 50 A
With conductor cross-sectional area 6 mm² 6 mm² 6 mm² 10 mm² 10 mm² 10 mm²
AC-1 Utilization category
For air temperature close to contactor
Ie / Rated operational current AC-1 θ ≤ 40 °C 25 A 28 A 30 A 45 A 50 A 50 A
Ue max. ≤ 690 V, 50/60 Hz θ ≤ 60 °C 25 A 28 A 30 A 40 A 42 A 42 A
θ ≤ 70 °C 22 A 24 A 26 A 32 A 37 A 37 A
With conductor cross-sectional area 4 mm² 6 mm² 6 mm² 10 mm² 10 mm² 10 mm²
AC-3, AC-3e Utilization category
For air temperature close to contactor θ ≤ 60 °C
Ie / Max. rated operational current AC-3, AC-3e (1)
3-phase motors 220-230-240 V 9 A 12 A 18 A 26 A 33 A 40 A
M 380-400 V 9 A 12 A 18 A 26 A 32 A 38 A
3 415 V 9 A 12 A 18 A 26 A 32 A 38 A
440 V 9 A 12 A 18 A 26 A 32 A 38 A
500 V 9.5 A 12.5 A 15 A 23 A 28 A 33 A
690 V 7 A 9 A 10.5 A 17 A 21 A 24 A
Rated operational power AC-3, AC-3e (1)
1500 r.p.m. 50 Hz 220-230-240 V 2.2 kW 3 kW 4 kW 6.5 kW 9 kW 11 kW
M 1800 r.p.m. 60 Hz 380-400 V 4 kW 5.5 kW 7.5 kW 11 kW 15 kW 18.5 kW
3 3-phase motors 415 V 4 kW 5.5 kW 9 kW 11 kW 15 kW 18.5 kW
440 V 4 kW 5.5 kW 9 kW 15 kW 18.5 kW 22 kW
500 V 5.5 kW 7.5 kW 9 kW 15 kW 18.5 kW 22 kW
690 V 5.5 kW 7.5 kW 9 kW 15 kW 18.5 kW 22 kW
Rated making capacity AC-3, AC-3e 10 x Ie AC-3, 12 x Ie AC-3e acc. to IEC 60947-4-1
Rated breaking capacity AC-3, AC-3e 8 x Ie AC-3, 8.5 x Ie AC-3e acc. to IEC 60947-4-1
AC-8a Utilization category
(without thermal overload relay - Ue 400 V 50/60 Hz - θ ≤ 40 °C)
Ie / Rated operational current AC-8a 12 A 16 A 22 A 30 A 40 A 50 A
Rated operational power AC-8a 5.5 kW 7.5 kW 11 kW 15 kW 20 kW 25 kW
Short-circuit protection device for contactors
without thermal overload relay - Motor protection excluded (2)
Ue ≤ 500 V AC - gG type fuse 25 A 32 A 32 A 50 A 63 A 63 A
Rated short-time withstand current Icw 1 s 300 A 300 A 300 A 700 A 700 A 700 A
at 40 °C ambient temperature, 10 s 150 A 150 A 150 A 350 A 350 A 350 A
in free air from a cold state 30 s 80 A 80 A 80 A 225 A 225 A 225 A
1 min 60 A 60 A 60 A 150 A 150 A 150 A
15 min 35 A 35 A 35 A 50 A 50 A 50 A
Maximum breaking capacity
cos φ = 0.45 at 440 V 250 A 250 A 250 A 500 A 500 A 500 A
at 690 V 106 A 106 A 106 A 200 A 200 A 200 A
Power dissipation per pole Ie / AC-1 0.8 W 1 W 1.2 W 1.8 W 2.4 W 2.4 W
Ie / AC-3, AC-3e 0.1 W 0.2 W 0.35 W 0.6 W 0.9 W 1.3 W
Max. electrical switching frequency AC-1 600 cycles/h
AC-3, AC-3e 1200 cycles/h
AC-2, AC-4 300 cycles/h 150 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".
(2) For the protection of motor starters against short circuits, see "Coordination with short-circuit protection devices".

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