AIR CIRCUIT BREAKERS - Electrical and Electronics Division

MN80 MN95 MN110 MN140
Mechanical Life Opns. 10x10 6 10x10 6 10x10 6 10x10 6
Rated insulation voltage Ui 1000V 1000V 1000V 1000V
Rated impulse withstand Uimp 8KV 8KV 8KV 8KV
Service temperature o C -20 to +55 -20 to +55 -20 to +55 -20 to +55
Utilisation category 3ph,415V,50Hz
AC-1 140A 160A 160A 160A
AC-2 80A 95A 110A 140A
AC-3 40kw/54hp/80A 45kw/60hp/95A 55kw/75hp/110A 75kw/100hp/140A
AC-4 40kw/54hp/80A 45kw/60hp/95A 55kw/75hp/110A 75kw/100hp/140A
Operational current,Ie, for AC-4
at 415V,50Hz for 200,000 cycles. A 43 53 58 66
Making capacity A 1450 1680 1680 1800
Breaking capacity A 1300 1400 1400 1600
Capacitor switching delta kVAR 55 65 65 70
connected,415V,50Hz
Max. frequency Mechanical 3600 3600 3600 3600
of operating AC1 3000 3000 3000 3000
op.cycles/hr AC2 750 750 750 750
AC3 750 750 750 750
Stator duty-415V,50Hz - Duty factor -
AC4 300 300 300 300
20% 120A 143A 165A 210A
40% 120A 143A 165A 210A
60% 100A 120A 135A 175A
Rotor duty-delta connected-Duty factor -
20% 180A 214A 250A 315A
40% 180A 214A 250A 315A
60% 150A 180A 203A 262A
Main terminal capacity Lug(mm 2 ) 1x120 1x120 1x120 1x120
Aux.terminal capacity
Wires(mm 2 ) — — — —
Wires(mm 2 ) 2x2.5 2x2.5 2x2.5 2x2.5
Pick up time msec 20-40 20-40 20-40 20-40
Drop off time msec 10-25 10-25 10-25 10-25
Operating limits (%Uc) 80-110 80-110 80-110 80-110
Coil Consumption at 50Hz
TECHNICAL DATA - TYPE MN
MN80/95/110/140 Contactors
Pick-up VA 550 550 550 550
Hold-on VA 36 36 36 36
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