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NM8N High-voltage (HV) Series
Molded Case Circuit Breaker

Standards: IEC/EN 60947-2
GB/T 14048.2

NO:2022.05

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Summary of Contents for NM8N Series

Page 1: ...NM8N High voltage HV Series Molded Case Circuit Breaker Standards IEC EN 60947 2 GB T 14048 2 NO 2022 05 ...

Page 2: ...uch the conductive part of the product during product operation stage 3 When installing repairing and maintaining the product ensure that the line is powered off 4 Do not install in place where gas medium can corrode metal and damage insulation 5 In order to avoid dangerous accident the product must be installed and fixed in strict accordance with the requirements of this Instruction Manual Safety...

Page 3: ...stallation and Transportation Storage Check and Test Overall and Installation Dimensions Release Installation and Wiring Tripping Characteristic Curves Table of Rated Working Current and Temperature Compensation Coefficient Altitude Derating Coefficient Table Internal Accessory and Installation Warranty Period Contents ...

Page 4: ...aded short circuited or under voltage and it also provides short circuit protection for starting up of electrical motor infrequently 2 Model Specification and Meaning High voltage Code Case Frame Current Code 250 250A 400 400A 630 630A Molded Case Circuit Breaker Number of poles 3 pole Rated Current Code 250 63 80 100 125 160 180 200 225 250 400 250 315 350 400 630 400 500 630 Release Code Thermal...

Page 5: ...mounting surface and the vertical surface for the product shall not be greater than 5 3 3 Transportation Storage Conditions The applicable temperature range for the product is from 40 to 80 The storage place for the product shall be ventilated and dry and shall not be attacked by rain snow and shall not be exposed to direct sunlight Essential Tools Check Model 1 To determine the technical paramete...

Page 6: ...Model A B C D To ensure minimum installation distance Back to the LOCK postion ON OFF ON TRIP Test NM8N High voltage HV Series Molded Case Circuit Breaker ...

Page 7: ...g 1 Overall and Installation Dimensions for NM8N 250 HV Terminal Cover Arc Isolating Plate 4 x ø 5 5 or 4 x M5 Overall and Installation Dimensions NM8N High voltage HV Series Molded Case Circuit Breaker 5 ...

Page 8: ...Terminal Cover Arc Isolating Plate 4 x ø 5 5 or 4 x M5 Fig 2 Overall and Installation Dimensions for NM8N 400 630 HV NM8N High voltage HV Series Molded Case Circuit Breaker ...

Page 9: ...g 3 Opening Sizes in front of NM8N 250 630 HV Cover Opening sizes in front of Cover Table 1 Opening Sizes in front of NM8N 250 630 HV Cover Unit mm NM8N High voltage HV Series Molded Case Circuit Breaker Size Category Size Code Model ...

Page 10: ...nstantaneous current setting Product Model Number of poles Setting Value of Thermal Magnetic type Release Over load Protection Thermal Protection Short circuit Protection Magnetic Protection 5 10In Power distribution 9 14In Motor NM8N High voltage HV Series Molded Case Circuit Breaker 6 10 In Power distribution 63A 100A 7 12In Power distribution 125A 160A 5 10In Power distribution 180A 250A 12In M...

Page 11: ...Installation and Wiring Sizes for Front Connection Plate and Conductor NM8N High voltage HV Series Molded Case Circuit Breaker 7 ...

Page 12: ...NM8N High voltage HV Series Molded Case Circuit Breaker ...

Page 13: ...NM8N High voltage HV Series Molded Case Circuit Breaker NM8N 250HV 400HV and 630HV Size ...

Page 14: ...al Magnetic Tripping Characteristic Curves of Distribution Protection NM8N High voltage HV Series Molded Case Circuit Breaker Tripping Characteristic Curves 8 NM8N 250HV 63A 80A and 100A NM8N 250HV 125A and 160A ...

Page 15: ...NM8N High voltage HV Series Molded Case Circuit Breaker NM8N 250HV 180A 200A 225A and 250A NM8N 400HV 250A 315A 350A and 400A ...

Page 16: ...NM8N High voltage HV Series Molded Case Circuit Breaker NM8N 630HV 400A 500A and 630A ...

Page 17: ...ripping Characteristic Curve of Motor Protection NM8N High voltage HV Series Molded Case Circuit Breaker NM8N 250HV 63A 80A and 100A NM8N 250HV 225A and 250A 125A 160A 180A 200A Maximum Heat Tolerance Maximum Heat Tolerance ...

Page 18: ...NM8N High voltage HV Series Molded Case Circuit Breaker NM8N 400HV 350A and 400A 250A 315A Maximum Heat Tolerance Maximum Heat Tolerance NM8N 630HV 400A 500A and 630A ...

Page 19: ...emperature Rated Current Rated insulation impulse voltage Uimp kV Altitude m Rated working current In Rated working voltage Ue V Rated insulation voltage Ui V Dielectric properties V NM8N High voltage HV Series Molded Case Circuit Breaker 9 Altitude Derating Coefficient Table 10 ...

Page 20: ...Internal Accessory and Installation NM8N High voltage HV Series Molded Case Circuit Breaker 11 ...

Page 21: ...ge caused by disassembly and maintenance by User self or by organization or personnel not designated by the Company 3 The product exceeds the Warranty Period 4 Damage caused by force majeure 12 2 Protect the environment In order to protect the environment when this product or its part is scrapped please treat it properly as industrial waste Or to the recycling station for classified disassembly re...

Page 22: ...NM8N High voltage HV Series Molded Case Circuit Breaker NM8N High voltage HV Series Molded Case Circuit Breaker IEC EN 60947 2 GB T 14048 2 PD1 Inspecror 30 ...

Page 23: ...NM8N High voltage HV Series Molded Case Circuit Breaker User Instruction ...

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