Page 79 - contactors_motor_protection_for_rolling_stock_application

AF50 ... AF95B 3-pole contactors

Technical data

Main pole - Utilization characteristics according to IEC
Contactor types AF50 AF63 AF75 AF95B
Standards IEC 60947-1 / 60947-4-1 and EN 60947-1 / 60947-4-1
IEC 60077-1, IEC 60077-2, EN 50155 (applicable parts) (3)
Fire and smoke EN 45545-2 (HL2, HL3) EN 45545-2 (HL2) 2
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 100 A 100 A 125 A 145 A
With conductor cross-sectional area 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 100 A 115 A 125 A 145 A
Ue max. ≤ 690 V, 50/60 Hz θ ≤ 55 °C 85 A 95 A 105 A 135 A
θ ≤ 70 °C 70 A 80 A 85 A 115 A
With conductor cross-sectional area 35 mm² 50 mm² 50 mm² 50 mm²
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 53 A 65 A 75 A 96 A
380-400 V 50 A 65 A 75 A 96 A
415 V 50 A 65 A 75 A 96 A
M 3-phase motors 440 V 45 A 65 A 70 A 93 A
3 500 V 45 A 55 A 65 A 80 A
690 V 35 A 43 A 46 A 65 A
1000 V - - - 30 A
Rated operational power AC-3 (1)
220-230-240 V 15 kW 18.5 kW 22 kW 25 kW
380-400 V 22 kW 30 kW 37 kW 45 kW
415 V 25 kW 37 kW 40 kW 55 kW
1500 r.p.m. 50 Hz
M 1800 r.p.m. 60 Hz 440 V 25 kW 37 kW 40 kW 55 kW
3 3-phase motors 500 V 30 kW 37 kW 45 kW 55 kW
690 V 30 kW 37 kW 40 kW 55 kW
1000 V - - - 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
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
Rated short-time withstand current Icw 1 s 1000 A 1320 A
at 40 °C ambient temperature, 10 s 650 A 800 A
in free air from a cold state 30 s 370 A 500 A
1 min 250 A 350 A
15 min 110 A 135 A 135 A 160 A
Maximum breaking capacity
cos φ = 0.45 at 440 V 1300 A 1160 A
(cos φ = 0.35 for Ie > 100 A) at 690 V 630 A 800 A
Power dissipation per pole Ie / AC-1 5 W 6.5 W 7 W 6.5 W
Ie / AC-3 1.3 W 1.5 W 2 W 2.7 W
Max. electrical switching frequency AC-1 300 cycles/h
AC-3 300 cycles/h
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".
(3) AF95B: please consult us.

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