Page 331 - Motor_protection_and_control_Manual_motor_starters_ contactors

AF40 ... AF96 3-pole contactors

Technical data

Main pole - Utilization characteristics according to IEC
Contactor types AC / DC operated AF40 AF52 AF65 AF80 AF96
Standards IEC 60947-1 / 60947-4-1 and EN 60947-1 / 60947-4-1
Rated operational voltage Ue max. 690 V 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 105 A 105 A 105 A 130 A 130 A
With conductor cross-sectional area 35 mm² 35 mm² 35 mm² 50 mm² 50 mm²
AC-1 Utilization category
For air temperature close to contactor
Ie / Rated operational current AC-1 θ ≤ 40 °C 70 A 100 A 105 A 125 A 130 A
Ue max. ≤ 690 V, 50/60 Hz θ ≤ 60 °C 60 A 80 A 90 A 100 A 105 A
θ ≤ 70 °C 50 A 70 A 80 A 85 A 90 A
With conductor cross-sectional area 25 mm² 35 mm² 35 mm² 50 mm² 50 mm²
AC-3 Utilization category
For air temperature close to contactor θ ≤ 60 °C
Ie / Max. rated operational current AC-3 (1) 5
220-230-240 V 40 A 53 A 65 A 80 A 96 A
380-400 V 40 A 53 A 65 A 80 A 96 A
415 V 40 A 53 A 65 A 80 A 96 A
M 3-phase motors 440 V 40 A 53 A 65 A 80 A 96 A
3 500 V 35 A 45 A 55 A 65 A 80 A
690 V 25 A 35 A 39 A 49 A 57 A
1000 V - - - 25 A 30A
Rated operational power AC-3 (1)
220-230-240 V 11 kW 15 kW 18.5 kW 22 kW 25 kW
380-400 V 18.5 kW 22 kW 30 kW 37 kW 45 kW
1500 r.p.m. 50 Hz 415 V 22 kW 30 kW 37 kW 45 kW 55 kW
M 1800 r.p.m. 60 Hz 440 V 22 kW 30 kW 37 kW 45 kW 55 kW
3 3-phase motors 500 V 22 kW 30 kW 37 kW 45 kW 55 kW
690 V 22 kW 30 kW 37 kW 45 kW 55 kW
1000 V - - - 35 kW 40 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
AC-8a Utilization category
(without thermal overload relay - Ue 400 V 50/60 Hz - θ ≤ 40 °C)
Ie / Rated operational current AC-8a 53 A 70 A 85 A 105 A 120 A
Rated operational power AC-8a 25 kW 37 kW 45 kW 55 kW 65 kW
Short-circuit protection device for contactors
without thermal overload relay - Motor protection excluded (2)
Ue ≤ 500 V AC - gG type fuse 100 A 125 A 160 A 160 A 200 A
Rated short-time withstand current Icw 1 s 1000 A 1000 A 1000 A 1200 A 1200 A
at 40 °C ambient temperature, 10 s 600 A 600 A 600 A 780 A 780 A
in free air from a cold state 30 s 350 A 350 A 350 A 450 A 450 A
1 min 250 A 250 A 250 A 300 A 300 A
15 min 110 A 110 A 110 A 140 A 140 A
Maximum breaking capacity
cos φ = 0.45 at 440 V 950 A 950 A 950 A 1150 A 1150 A
at 690 V 600 A 600 A 600 A 750 A 750 A
Power dissipation per pole Ie / AC-1 3 W 6.3 W 7 W 7.6 W 8.2 W
Ie / AC-3 1 W 1.7 W 2.7 W 3 W 4.5 W
Max. electrical switching frequency AC-1 600 cycles/h
AC-3 1200 cycles/h
AC-2, AC-4 150 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".

1SBC101743S0201 - Rev. B

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