Description
NM8N series molded case circuit breaker is suitable for the circuit of AC50/60Hz, with rated voltage AC690V and below, DC system rated voltage DC1000V and below, and rated current of 16A and 1600A.
It can protect electrical circuits and equipment from overload, short-circuit, or undervoltage, and can also provide overload, short-circuit, and undervoltage protection for infrequent motor starts. The products have power distribution protection, motor protection, residual current protection, and isolation functions.
Standards compliant:
- IEC 60947-1 General rules for low-voltage switchgear and controlgear
- IEC 60947-2 Circuit breakers for low-voltage switchgear and controlgear
- IEC 60947-3 Low-voltage switchgear, controlgear, switches, disconnectors and combination fuses
- IEC 60947-4-1 Electromechanical contactors and motor starters (including motor protectors) for low-voltage switchgear and controlgear.
Operating conditions
Temperature: The operating and storage temperature is -40°C~+70°C; the 24-hour average value does not exceed +35°C; when the ambient temperature is -40°C~+70°C, users need to consider power reduction or temperature compensation, details of which can be found on the page.
Altitude: ≤ 2,000m
Degree of pollution: Grade 3
IP Grade: IP40
Air conditions: At the assembly site, the relative humidity should not exceed 50% at the maximum temperature of +40℃, a higher relative humidity is allowed at lower temperatures. For example, the RH can be 90% at +20℃, special measures should be taken for the occurrence of dew.
