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NDM3L Series Molded Case Residual Current Action Protector
Updated:August 12,2022 16:01PM

Nader NDM3L series MCCB is mainly used in circuits with AC 50Hz / 60Hz, rated working voltage of 380V to 415V and rated working current of 16A to 800A for infrequent conversion and infrequent starting of motors. The circuit breaker has the functions of overload, short circuit and undervoltage protection, which can protect the line and power supply equipment from damage. At the same time, it can also provide protection against fire hazard and personal electric shock caused by long-term grounding fault that cannot be detected by overcurrent protection
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Features of NDM3L Series

  • The protector can adopt packaged accessories for quick installation, thus responding to the user's requirements, without adjustment.
  • The protector can adopt packaged accessories for quick installation, thus responding to the user's requirements, without adjustment.
  • Adjustable on the site: 3-gear residual current, 3-gear delay time, to be adjusted by users according to the onsite demands.
  • Leakage tripping indication function: In case of leakage tripping for the product, the leakage tripping indication button will pop up.
  • Extremely strong work capacity in case of the working voltage failure: When the phase voltage is reduced to 50V, the residual current protection function can still be realized reliably.


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Questions & Answers for NDM3L 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.