Page 420 - Motor_protection_and_control_Manual_motor_starters_ contactors

AF09 ... AF80 4-pole contactors

Technical data

Main pole - Utilization characteristics according to IEC
Contactor types AC / DC operated AF09 AF16 AF26 AF38 AF40 AF52 AF80
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 55 A 55 A 105 A 105 A 125 A
With conductor cross-sectional area 6 mm² 6 mm² 16 mm² 16 mm² 35 mm² 35 mm² 50 mm²
AC-1 Utilization category
For air temperature close to contactor
Ie / Rated operational current AC-1 θ ≤ 40 °C 25 A 30 A 45 A 55 A 70 A 100 A 125 A
Ue max. ≤ 690 V, 50/60 Hz θ ≤ 60 °C 25 A 30 A 40 A 45 A 60 A 80 A 105 A
θ ≤ 70 °C 22 A 26 A 32 A 37 A 50 A 70 A 90 A
With conductor cross-sectional area 4 mm² 6 mm² 10 mm² 16 mm² 35 mm² 35 mm² 50 mm²
AC-3 Utilization category
For air temperature close to contactor θ ≤ 60 °C
5 Ie / Max. rated operational current AC-3 (1)
220-230-240 V 9 A 18 A 23.2 A 23.2 A 40 A 53 A 80 A
380-400 V 9 A 18 A 22 A 22 A 40 A 53 A 80 A
415 V 9 A 18 A 21.2 A 21.2 A 40 A 53 A 80 A
M 3-phase motors
3 440 V 9 A 18 A 20 A 20 A 40 A 53 A 80 A
500 V 9.5 A 15 A 17.6 A 17.6 A 35 A 45 A 65 A
690 V 7 A 10.5 A 10.5 A 10.5 A 25 A 35 A 49 A
Rated operational power AC-3 (1)
220-230-240 V 2.2 kW 4 kW 5.5 kW 5.5 kW 11 kW 15 kW 22 kW
380-400 V 4 kW 7.5 kW 11 kW (3) 11 kW (3) 18.5 kW 22 kW 37 kW
1500 r.p.m. 50 Hz 415 V 4 kW 9 kW 11 kW 11 kW 22 kW 30 kW 45 kW
M 1800 r.p.m. 60 Hz
3 3-phase motors 440 V 4 kW 9 kW 11 kW 11 kW 22 kW 30 kW 45 kW
500 V 5.5 kW 9 kW 11 kW 11 kW 22 kW 30 kW 45 kW
690 V 5.5 kW 9 kW 9 kW 9 kW 22 kW 30 kW 45 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
Ue ≤ 500 V AC - gG type fuse 25 A 32 A 50 A 63 A 80 A 110 A 160 A
Rated short-time withstand current Icw 1 s 300 A 300 A 450 A 450 A 1000 A 1000 A 1200 A
At 40 °C ambient temperature, 10 s 150 A 150 A 300 A 300 A 600 A 600 A 780 A
in free air from a cold state 30 s 80 A 80 A 225 A 225 A 350 A 350 A 450 A
1 min 60 A 60 A 150 A 150 A 250 A 250 A 300 A
15 min 35 A 35 A 55 A 55 A 110 A 110 A 140 A
Maximum breaking capacity N.O. main pole at 440 V 250 A 250 A - - 950 A 950 A 1100 A
cos φ = 0.45 at 690 V 106 A 106 A - - 600 A 600 A 750 A
N.C. Main pole at 440 V - - - - 600 A - 900 A
at 690 V - - - - 300 A - 750 A
Power dissipation per pole Ie / AC-1 0.8 W 1.2 W 1.6 W 2.3 W 3 W 6.3 W 8 W
Ie / AC-3 0.1 W 0.35 W 0.42 W 0.42 W 1 W 1.7 W 3.2 W
Max. electrical switching frequency AC-1 600 cycles/h
(1) For the corresponding kW/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".
(3) 400 V 3-phase motors only.

1SBC101989S0201 - Rev. B

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