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General| Poles | 3P, 4P |
|---|---|
| Standard | IEC 60947-2 |
| Trip Curve | B, C, D |
| Rated Voltage (Ue) | AC 690V |
| Mounting Type | Fixed |
| Type | MCCB |
| Mechanical Life | 20000 cycles |
| Electrical Life | 10000 times |
| Rated Current (In) | 16A, 20A, 25A, 32A, 40A, 50A, 63A |
Provides essential safety guidelines for handling and installing the circuit breaker to prevent hazards.
Details the purpose, application, and general specifications of the NM8N High-voltage (HV) Series Circuit Breaker.
Explains the coding system used for NM8N series circuit breaker models, specifications, and features.
Specifies the acceptable ambient air temperature and humidity ranges for operation and storage.
Outlines requirements for installation sites, including resistance to shaking, impact, vibration, and inclination.
Defines the temperature range, ventilation, and protection requirements for product transportation and storage.
Lists necessary tools and outlines preliminary checks before installation or operation.
Emphasizes that installation, operation, repair, and maintenance must be performed by qualified personnel.
Illustrates the different operational states: LOCK, ON, OFF, and TRIP of the circuit breaker.
Provides general dimensional data and variations for different models of the NM8N series.
Presents specific overall and installation dimensions for the NM8N-250HV model with diagrams.
Presents specific overall and installation dimensions for the NM8N-400/630HV models with diagrams.
Details the required opening sizes on the front cover for NM8N 250-630 HV models as per figures and tables.
Explains the adjustable settings for over-current and short-circuit protection in thermal magnetic releases.
Provides a table detailing the setting values for thermal and magnetic protection for various models.
Specifies dimensions for front connection plates and conductors used with NM8N series circuit breakers.
Details the recommended installation steps and required torque specifications for connections.
Provides detailed specifications for terminals and connections, including size and material requirements for different models.
Details tripping characteristics for thermal magnetic protection across all NM8N models and current ranges.
Details tripping characteristics for electromagnetic protection for motor applications across all NM8N models.
Provides a table of rated working current at different temperatures and their compensation coefficients.
Lists derating coefficients for rated working current based on installation altitude.
Identifies and describes internal accessories such as auxiliary contacts and various release types.
Illustrates the wiring connections for internal accessories like auxiliary and alarm contacts.
Defines the product warranty period and lists conditions that are excluded from warranty coverage.
Provides guidance on the proper environmental protection and disposal of the product as industrial waste.
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