Page 125 - contactors_motor_protection_for_rolling_stock_application

AF45 … AF75 4-pole contactors

Technical data

Main pole - Utilization characteristics according to IEC
Contactor types AF45 AF50 AF75
Standards IEC 60947-1 / 60947-4-1 and EN 60947-1 / 60947-4-1
IEC 60077-1, IEC 60077-2, EN 50155 (applicable parts)
Fire and smoke EN 45545-2 (HL2, HL3) 2
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 100 A 100 A 125 A
With conductor cross-sectional area 35 mm² 35 mm² 60 mm²
AC-1 Utilization category
For air temperature close to contactor
Ie / Rated operational current AC-1 θ ≤ 40 °C 70 A 100 A 125 A
Ue max. ≤ 690 V, 50/60 Hz θ ≤ 55 °C 60 A 85 A 105 A
θ ≤ 70 °C 50 A 70 A 85 A
With conductor cross-sectional area 25 mm² 35 mm² 25 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 40 A 53 A 75 A
380-400 V 37 A 50 A 75 A
M 3-phase motors 415 V 37 A 50 A 75 A
3 440 V 37 A 45 A 70 A
500 V 33 A 45 A 65 A
690 V 25 A 35 A 46 A
Rated operational power AC-3 (1)
220-230-240 V 11 kW 15 kW 22 kW
380-400 V 18.5 kW 22 kW 37 kW
1500 r.p.m. 50 Hz 415 V 18.5 kW
M 1800 r.p.m. 60 Hz 25 kW 40 kW
3 3-phase motors 440 V 22 kW 25 kW 40 kW
500 V 22 kW 30 kW 45 kW
690 V 22 kW 30 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
Short-circuit protection device for contactors
without thermal overload relay - Motor protection excluded
Ue ≤ 500 V AC - gG type fuse 80 A 100 A 160 A
Rated short-time withstand current Icw 1 s 1000 A
At 40 °C ambient temperature, 10 s 650 A
in free air from a cold state 30 s 370 A
1 min 250 A
15 min 110 A 110 A 135 A
Maximum breaking capacity
cos φ = 0.45 at 440 V 900 A 1300 A 1300 A
(cos φ = 0.35 for Ie > 100 A) at 690 V 490 A 630 A 630 A
Power dissipation per pole Ie / AC-1 2.5 W 5 W 7 W
Ie / AC-3 0.65 2 W
Max. electrical switching frequency AC-1 300 cycles/h
AC-3 300 cycles/h

Main pole - Utilization characteristics according to UL / CSA
Contactor types AF45 AF50 AF75
Standards UL 508, CSA C22.2 N°14
Max. operational voltage 600 V
UL / CSA general use rating
600 V AC 65 A 80 A 105 A
With conductor cross-sectional area AWG 6 AWG 4 AWG 2
Max. electrical switching frequency
For general use 300 cycles/h

1SBC100144S0201

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