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Type 2 AC Surge Protector (Imax 40kA, Class II AC SPD)

  • Standard: IEC/EN 61643-11
  • No. of Poles: 1, 2, 3, 4,1P+NPE,3P+NPE
  • Surge Rating: Imax=40kA (8/20 µs)
  • IEC/EN Category: Type 2/Class II
  • Max. continuous operating voltage: 275, 320, 385, 440V
  • Housing: Pluggable Design
  • CAU5-T2-40

  • Chanan

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Description

Reliable Protection Against Electrical Surges


Introducing the innovative CAU4-T2-40, a Type 2 modular Surge Protection Device (SPD) engineered to deliver Imax 40kA protection. This robust SPD safeguards your essential equipment connected to low voltage AC power supplies from the damaging effects of transient overvoltage. Whether the source is a local lightning strike or the result of electrical inductive or capacitive load switching, this device offers steadfast security to keep your system operating smoothly.


Intelligent Design for Enhanced Safety


To ensure utmost safety and adherence to international standards, the CAU4-T2-40 features mechanically distinct N-PE and L-N modules. This smart distinction is in strict compliance with section 7.3.1 of the IEC61643-11 standard, effectively preventing erroneous combinations that could lead to hazardous conditions such as fire outbreaks. For instance, the gas discharge tube of the N-PE module is not interchangeable with the varistor-based L-N module, thereby eliminating the risk associated with incorrect insertion and utilization of the SPD modules.


Technical Parameters

Table 1

No.of poles 1P 2P 3P 4P 1P+NPE 3P+NPE
Network systems TN-S, TN-C, TT(only L-N) TN-S TN-C TN-S TT, TN-S
Mode of protection L-PE, N-PE(onlyTN-S), L-PEN, L-N L-PE, N-PE L-PEN L-PE, N-PE L-N, N-PE
Protective elements High Energy MOV High Energy MOV and GDT

Table 2

Maximum continuous operating voltage (L-N) Uc 275V 320V 385V 440V
Maximum continuous operating voltage (N-PE) Uc 255V
Norminal discharge current (8/20μs) (L-N)/(N-PE) In 20kA
Maximum discharge current (8/20μs) (L-N)/(N-PE) Imax 40kA
Voltage protection level (L-N)/(N-PE) Up 1.3kV/1.5kV 1.5kV/1.5kV 1.8kV/1.5kV 2.0kV/1.5kV
Voltage protection level 5kA Up 1.0kV 1.2kV 1.4kV 1.6kV
Response time (L-N)/(N-PE) tA ≤25ns/≤100ns
Operating temperature range Tu -40℃ to +80℃
Max. Back-up fuse 125 A gL/gG
Operating state/fault indication Green/Red(L-N),Yellow(N-PE)
Cross-section area (Min.)/(Max.) 4mm²/35mm²
Mounting 35 mm DIN Rail, EN 60715
Enclosure material Thermal Plastic UL94-V0
Degree of protection IP20 (built-in)


Overall Dimensions


CAU4-T2-20-40-Size


Product Uses


A Type 2 surge protector with a maximum discharge current (8/20μs) of 40kA is designed to provide protection against medium-level surge events, typically caused by indirect lightning strikes or the switching of electrical equipment. The 40kA rating indicates that the device can handle surge currents up to 40,000 amperes using the standard 8/20 microsecond waveform. This surge protector is essential for various applications:


  1. Commercial Buildings: Office buildings, shopping centers, and other commercial properties benefit from a 40kA Type 2 SPD to protect electrical infrastructure and sensitive electronic devices such as computers, HVAC systems, and lighting from surges.

  2. Industrial Facilities: Factories or plants with large motors, drives, or equipment that frequently switches on and off require a 40kA SPD to prevent damage to these systems and reduce downtime.

  3. Residential Complexes: High-end residential complexes with sophisticated electronics, security systems, and smart home technologies would benefit from this level of protection against surges that can travel along power lines.

  4. Telecommunications Infrastructure: Telecommunication centers with complex networks and systems need robust surge protection to maintain communications and data integrity.

  5. Utility Services: Electrical substations and water treatment plants also use Type 2 SPDs to protect their control systems and operational technology from surge-related damage.


It's important for facilities to assess their surge risk and choose an SPD with an appropriate maximum discharge current rating. The 40kA Type 2 SPD is a common choice for many commercial and industrial applications due to its balance between cost and performance. Installation should comply with local regulations and standards, and it's often advised to use these SPDs in coordination with other types (Type 1 and Type 3) for comprehensive surge protection.

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