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NOM1 Molded Case Circuit Breaker

Application of NOM1 Molded Case Circuit Breaker

NOM1 Molded Case Circuit Breaker

NOM1 Molded Case Circuit Breaker

Moulded Case Circuit Breakers NOM1 series (hereinafter called as NOM1 MCCB) is a new designed MCCB developed and manufactured adopting international advanced technology.NOM1 MCCB rated insulating voltage AC 800V is suitable for using in the circuit of AC 50Hz /60Hz, rated voltage up to 690V, rated working current up to 630A to distribute electric power and to protect the line and the equipment from being damaged due to overload, short current and under-voltage.It can also be used for infrequently switch and starting of motor and for motor overload, short circuit and under-voltage protections.NOM1 MCCB with the advantages of the small volume, high breaking capacity, short over-arcing (some of specification is zero arcing), strong anti-vibration and so on.In accordance with the ultimate short circuit breaking capacity classified into four types: Type C (basic), Type L (standard), Type M (middle), Type H (high).

MCCB comply with the following standards:

  • IEC 60947-1 and GB/T 14048.1 General
  • IEC 60947-2 and GB/T 14048.2 Low voltage breakers
  • IEC 60947-4 and GB/T 14048.4 Contactors and motor starters
  • IEC 60947-5.1 and GB/T 14048.5 Electrical equipment of electro-mechanical control circuit.

 Protection Characteristics of NOM1 Molded Case Circuit Breaker

NOM1 MCCB provides the feature of inverse time lag being thermodynamic release and the instantoperation being the magnetic release details as shown on Table 1(use of distribution) and Table 2(use formotor protection circuit breaker)

NOM1-1NOM1-12 Characteristic Curve of NOM1 Molded Case Circuit BreakerNOM1 MCCB curve1-1

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