Page 603 - Motor protection and control Manual motor starters, contactors and overload relays

ABB MOTOR PROTECTION AND CONTROL 4/87

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MC1, MC2 3-pole and 4-pole mini contactors

Technical data

Main pole – Utilization characteristics according to IEC
Contactor types AC operated MC1A MC2A
DC operated MC1C MC2C
Standards IEC/EN 60947-1, IEC/EN 60947-4-1
Rated operational voltage Ue max 690 V AC, 440 V DC
Rated frequency (without derating) DC or 50 / 60 Hz
Conventional free-air thermal current Ith
acc. to IEC/EN 60947-4-1, open contactors, θ ≤ 55 °C, 04
with conductor cross-sectional area 20 A
AC-1 Utilization category for air temperature
close to contactor θ ≤ 55 °C
Ie / Rated operational current AC-1 230 V 20 A
Ue max ≤ 690 V, 50/60 Hz 400 V 20 A
500 V 20 A
690 V 20 A
AC-1 Utilization category for air temperature
close to contactor 55 < θ ≤ 70°C
Ie / Rated operational current AC-1 230 V 16 A
Ue max ≤ 690 V, 50/60 Hz 400 V 16 A
500 V 16 A
690 V 16 A
AC-3 Utilization category for air temperature
close to contactor θ ≤ 55 °C
Ie / Rated operational current AC-3 230 V 9 A 12 A
400 V 9 A 12 A
M 3-phase motors 500 V 8 A 10 A
3 690 V 5 A (1) 5 A (1)
Rated operational power AC-3 230 V 2.2 kW 3 kW
1500 r.p.m. 50 Hz 400 V 4 kW 5.5 kW
M 1800 r.p.m. 60 Hz 500 V 4 kW 5.5 kW
3
3-phase motors 690 V 4 kW (1) 4 kW (1)
AC-4 Utilization category for air temperature
close to contactor θ ≤ 55 °C
Ie / Rated operational current AC-4 230 V 9 A
400 V 9 A (1)
M 3-phase motors 500 V 8 A
3 690 V 5 A (1)
Rated operational power AC-4 230 V 2.2 kW
1500 r.p.m. 50 Hz 400 V 4 kW (1)
M 1800 r.p.m. 60 Hz 500 V 4 kW
3 3-phase motors 690 V 4 kW (1)
DC-1 Utilization category for air temperature
close to contactor θ ≤ 55 °C
Ie / Rated operational current DC-1 24 V 20 A
with 3 poles in series 48 V 20 A
60 V 20 A
125 V 10 A
220 V 8 A
DC-3 Utilization category for air temperature
close to contactor θ ≤ 55 °C
Ie / Rated operational current DC-3 24 V 12 A
with 3 poles in series 48 V 9 A
60 V 9 A
125 V 6 A
220 V 2.5 A
DC-5 Utilization category for air temperature
close to contactor θ ≤ 55 °C
Ie / Rated operational current DC-5 24 V 9 A
with 3 poles in series 48 V 8 A
60 V 7 A
125 V 2 A
220 V 0.8 A
Rated making capacity 10 x Ie AC-3 acc. to IEC/EN 60947-4-1, 12 x Ie AC-4 acc. to IEC/EN 60947-4-1
Rated breaking capacity 8 x Ie AC-3 acc. to IEC/EN 60947-4-1, 10 x Ie AC-4 acc. to IEC/EN 60947-4-1
Short-circuit protection device for contactors
without thermal O/L relay - motor protection excluded
fuse type gG Type 1: 32 A / Type 2: 20 A
Rated short-time withstand current Icw at 40 °C
ambient temperature, in free air from a cold state 10 s 72 A 96 A
Maximum breaking capacity cos φ = 0.45 at 400 V 90 A 120 A
Maximum electrical switching frequency AC 300 cycles/h (AC-1), 1200 cycles/h (AC-3), 150 cycles/h (AC-4) 2CDC103063C0202 - Rev. A
DC 600 cycles/h
(1) Valid for N.O. contacts only. Other ratings on request.