4.5 Minimum and Maximum Current Settings
The minimum and maximum full load current settings depend on the model:
In-line connection Inside delta connection
Model Minimum [A] Maximum [A] Minimum [A] Maximum [A]
MCD5-0021B 5 23 7 34
MCD5-0037B 9 43 13 64
MCD5-0043B 10 50 15 75
MCD5-0053B 11 53 16 79
MCD5-0068B 15 76 23 114
MCD5-0084B 19 97 29 145
MCD5-0089B 20 100 30 150
MCD5-0105B 21 105 32 157
MCD5-0131B 29 145 44 217
MCD5-0141B 34 170 51 255
MCD5-0195B 40 200 60 300
MCD5-0215B 44 220 66 330
MCD5-0331B 70 350 70 525
MCD5-0396B 85 425 85 638
MCD5-0469B 100 500 100 750
MCD5-0525B 116 580 116 870
MCD5-0632B 140 700 140 1050
MCD5-0744B 164 820 164 1230
MCD5-0825B 184 920 184 1380
MCD5-0961B 200 1000 200 1500
MCD5-0245C 51 255 77 382
MCD5-0360C 72 360 108 540
MCD5-0380C 76 380 114 570
MCD5-0428C 86 430 129 645
MCD5-0595C 124 620 186 930
MCD5-0619C 130 650 195 975
MCD5-0790C 158 790 237 1185
MCD5-0927C 186 930 279 1395
MCD5-1200C 240 1200 360 1800
MCD5-1410C 282 1410 423 2115
MCD5-1600C 320 1600 480 2400
Table 4.6 Minimum and Maximum Full Load Current
4.6
Bypass Contactor
Some VLT
®
Soft Starter MCD 500 soft starters are internally
bypassed and do not require an external bypass contactor.
Non-bypassed soft starters may be installed with an
external bypass contactor. Select a contactor with an AC1
rating greater than or equal to the full load current rating
of the connected motor.
4.7 Main Contactor
Install a main contactor if the VLT
®
Soft Starter MCD 500 is
connected to the motor in inside delta format and is
optional for in-line connection. Select a contactor with an
AC3 rating greater than or equal to the full load current
rating of the connected motor.
4.8 Circuit Breaker
A shunt trip circuit breaker may be used instead of a main
contactor to isolate the motor circuit in the event of a soft
starter trip. The shunt trip mechanism must be powered
from the supply side of the circuit breaker or from a
separate control supply.
Electrical Installation
VLT
®
Soft Starter MCD 500
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