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NDM5E Series Electronic Molded Case Circuit Breaker
Updated:August 01,2020 18:11PM

The NDM5E series of electronic molded case circuit breakers (hereinafter referred to as circuit breakers) apply to the AC 50/60HZ and the rated working voltage of AC 690V.

NDM5E-160L
NDM5E-250H
NDM5E-400H
NDM5E-630H
NDM5E-1600M

Description

Description of NDM5E Series

The NDM5E series of electronic molded case circuit breakers (hereinafter referred to as circuit breakers) apply to the AC 50/60HZ and the rated working voltage of AC 690V. With the overload long time-delay inverse time limit, short-circuit short time-delay inverse time limit, short-circuit instantaneous action, overload and alarm, alarm non-tripping and communication protection functions, the circuit breaker can protect lines and power equipment from damage.

 

Features

Features of NDM5E Series

  • The circuit breaker features small size, high breaking capacity, short flashover, vibration resistance and etc.
  • The circuit breaker can adopt packaged accessories for quick installation, thus responding to the user's requirements, without adjustment.
  • The circuit breaker is provided with a dual transformer with high measurement accuracy and reliability.

 

Downloads and support

Find out more about NDM5E Series

NDM5-Series-MCCB-Datasheet.pdf

 

FAQs

Questions & Answers for NDM5E Series

  • What is a molded case circuit breaker?
    Moulded Case Circuit Breakers Explained. ... A moulded case circuit breaker (MCCB) is a type of electrical protection device that is used to protect the electrical circuit from excessive current, which can cause overload or short circuit.
  • What is the difference between MCCB and MCB?
    MCB is miniature circuit breaker which is used to break small currents. Like in domestic LT circuits. The ratings usually end up to 100 A. MCCB is a Module case circuit breaker which has a rugged construction as it can break larger currents usually from (100-1000A).
  • What is MCCB and its working?
    Molded Case Circuit Breaker (MCCB) is a circuit breaker and trip device assembled in a mould case. Also it can automatically cut off electric power in case of overload and short circuit. It is meant for higher rated current and is commonly used in Industrial applications.
  • What causes MCCB to trip?
    Circuit overloading is known to be the most common reason for circuit breaker tripping. It simply means that we're running too many heavy power-consuming devices at the same time on the same circuit. The next most dangerous cause is a short circuit.
  • How do molded case circuit breakers work?
    The traditional molded-case circuit breaker uses electromechanical (thermal magnetic) trip units that may be fixed or interchangeable. An MCCB provides protection by combining a temperature sensitive device with a current sensitive electromagnetic device. Both these devices act mechanically on the trip mechanism.
  • Why we use Mccb instead of MCB?
    If evaluated from their power capacities, the MCB is essentially used for low-current requirements, such as, home wiring or small electronic circuits; while the MCCB is better used for high-power requirements. Type of electrical switch which protects the circuit from overload or short circuit.

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