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NDU Series Surge Protector
Updated:August 01,2020 18:08PM

The NDU series surge protector (SPD) is used for the surge protection caused by lighting or other transient overvoltage thus limiting the voltage by discharging the large surge current on the power line to the ground.

NDU1-10-385-1P
NDU1-10-385-3P
NDU1-10-385-4PN
NDU1-80-440-1P
NDU1-80-440-2P
NDU1-80-440-3P

Description

Description of NDU Series

The NDU series surge protector (SPD) is used for the surge protection caused by lighting or other transient overvoltage, thus limiting the voltage by discharging the large surge current on the power line to the ground. It is suitable for power protection of the industry, construction, civil aviation, finance, security, telecommunication, port and other systems. It can suppress the instantaneous overvoltage amplitude for lighting and operation overvoltage, and discharge surge energy, thus protecting safety of the system circuit and equipment. The NDU3 surge protector can be installed in the LPZ0B/LPZ1 area with lightning protection for protecting the direct lightning that isn't attenuated with the overhead line in the power distribution system with the AC 50/60Hz and rated working voltage of 220/380V.

 

Features

Features of NDU Series

  • Maximum discharge current: 120KA (8/20 waveform), high-energy surge protection
  • Maximum continuous working voltage of different products: 255V~550V, DC600V, DC1000V for DC products
  • Built-in failure thermal tripping device for more safe use
  • 3+1 and common cabling types available, applicable to different grid types
  • The standard 35mm guide rail installation is supported
  • Pluggable module design for maintenance and replacement
  • With the failure indication and remote communication interface (with the NO and NC contacts)
  • With the anti-inverse mechanism

 

Certification

Certification of NDU Series

NDU series of surge protector has obtained China Compulsory Certification (CCC) for products.

 

FAQs

Questions & Answers for NDU Series

  • What is the function of miniature circuit breaker?
    A Miniature Circuit Breaker (MCB) is an automatically operated electrical switch used to protect low voltage electrical circuits from damage caused by excess current from an overload or short circuit.
  • What is miniature circuit breaker how it works?
    A miniature circuit breaker (MCB) automatically switches off the electrical circuit during an abnormal condition of the network means in overload condition as well as faulty condition. Nowadays we use an MCB in a low voltage electrical network instead of a fuse. Handling an MCB is electrically safer than a fuse.
  • What is mean by miniature circuit breaker?
    miniature circuit breaker: a small trip switch operated by an overload and used to protect an electric circuit, esp a domestic circuit as an alternative to a fuse.
  • How does a house breaker work?
    Inside each circuit breaker is a spring hooked over a small piece of solder (a melt-able fusible alloy). Each breaker is connected to an electrical wire that runs through your house. The electricity that flows through your house runs through the solder.
  • What is the advantage of miniature circuit breaker?
    MCB (Miniature Circuit Breaker) is a circuit breaker with optimum protection facilities of overcurrent and short circuit only. Its basic function is to detect the fault condition and interrupt the current flow. it avoids overheating in case of excess current & provides fire protection.
  • 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).
Tags: CCC NDU SPD 35mm

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