Merlin Gerin Miniature Circuit Breakers

Bimetals of merlin gerin miniature circuit breakers are used to provide adequate overload protection and can withstand high inrush due to motor starting or other transients without nuisance tripping, bimetals prevent circuit breakers from reclosing before a cool-down time for loads, high speed magnetic trip device is used to provide short circuit protection.
Field-installation accessories:
■​ Shunt trip of MX;
■​ Undervoltage release of MN;
■​ Auxiliary swtich of OF;
■​ Alarm switch of SD;
■​ B characteristic: 3.2-4.8 x ampere ratings;
■​ C characteristic: 7-10 x ampere ratings;
■​ D characteristicL 10-14 x ampere ratings;
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Data Sheet
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Selection table of NC100H series Miniature Circuit Breakers, Multi 9 Type

Rated Current, In

1P

2P

3P

4P

B Curve-magnetic setting between 3.2 and 4.8 times Ampere rating

63A

MG27208

MG27219

MG27230

MG27241

80A

MG27209

MG27220

MG27231

MG27242

100A

MG27210

MG27221

MG27232

MG27243

125A

MG27211

MG27222

MG27233

MG27244

C Curve-magnetic setting between 7 and 10 times Ampere rating

63A

MG27252

MG27263

MG27274

MG27285

80A

MG27253

MG27264

MG27275

MG27286

100A

MG27254

MG27265

MG27276

MG27287

125A

MG27255

MG27266

MG27277

MG27288

D Curve-magnetic setting between 10 and 13 times Ampere rating

63A

MG27296

MG27307

MG27318

MG27329

80A

MG27297

MG27308

MG27319

MG27330

100A

MG27298

MG27309

MG27320

MG27331


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