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NDM2ZB Series DC Three-segment Molded Case Circuit Breaker
Updated:August 01,2020 18:10PM

The NDM2ZB series of DC three-segment molded case circuit breakers (hereinafter referred to as circuit breakers) apply to the DC system application environment and the electric circuit.
2021 Quick Selection Guide >>

NDM2ZB-63-2P
NDM2ZB-125-2P
NDM2ZB-250-2P
NDM2ZB-400-2P
NDM2ZB-630-2P
NDM2ZB-800-3P

Description

Description of NDM2ZB Series

The NDM2ZB series of DC three-segment molded case circuit breakers (hereinafter referred to as circuit breakers) apply to the DC system application environment and the electric circuit with the rated working voltage of DC250V and the rated working current of 630A. With the overload long time-delay, short-circuit short time-delay, short-circuit instantaneous protection functions, the circuit breaker can protect lines and power equipment from damage. Products are widely used in the new energy, power, industrial control, real estate, electric power supply, telecom, rail transportation, project (public) construction and etc.

 

Features

Features of NDM2ZB Series

  • The circuit breaker features, high breaking capacity, short flashover, vibration resistance and etc.
  • The circuit breaker features the short circuit short-time delay function.

 

Downloads and support

Find out more about NDM2ZB Series

NDM2-Series-MCCB-Datasheet.pdf 

 

FAQs

Questions & Answers for NDM2ZB 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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