LT-40D/40E Type 2 Surge Protector 40kA N-PE

LT-40D/40E Type 2 Surge Protector 40kA N-PE

Installation of Surge Protective Device Type 2 at distribution board level which clamps switching and induced lightning transients prior to their reaching downstream units. Leitai Electric is an esteemed producer of surge protective devices based in China, with designing, manufacturing, testing and quality control of the Type I, II and III SPDs.

Applications & circuit protection

The LT-40D / LT-40E is used where TN and TT modes of protection have to be utilized as per Type 2 protection standards (20kA). Some of the common applications are described below.

• TN-S systems: It gives L-N and N-PE modes of protection.
• TT installations: It gives the facility of earthing issue protection.
• Distribution boards: It gives the opportunity to protect from common-mode and differential protection.
• Upgrading projects: It gives N-PE protection in the existing panels.

Schematic Diagram

The diagram shown above demonstrates the working of internal protection circuitry and attaching methods of the surge protector.

Construction & operating reliability

LT-40D/LT-40E devices are equipped with high-energy MOV items and a GDT, guaranteeing clamping efficiency and effective isolation in case of operation. Our production process consists of sorting MOV, assembling devices, performing thermal bonding and impulse testing under one roof.

• Mixed MOV and GDT protection enabling fast reaction and low leakage currents.
• Thermal disconnector with failure indication mark.
• Housing conforming to IP20 standard, flameproof according to UL94 V0.
• Devices are tested as per standards of IEC 61643-11/GB/T 18802.11.

Type 2 Surge Protector Specifications & Technical Data

Where to Buy Type 2 Surge Protector at Factory Sales Prices

The price for the LT-40D / LT-40E is based on various factors namely your specification, type, discharge capacity, voltage, and order quantity. It applies for wholesale orders, OEM orders, and project orders.

• Standard rates applies from the factory.
• Custom configuration and volume price is applicable for your order.
• Written quotation against your specification is provided.

Type 2 Surge Protector Connection & Installation Basics

Connect the LT-40D / LT-40E SPD across the active wires and the ground wire so the lead lengths are minimized. Check polarity and tightening torque as described in the data sheet, and protect the connection with an appropriate external disconnector.

• Making a parallel connection with short leads to the PE terminal.
• Using an external disconnector as specified.
• Contacting wiring diagram attached to the product documentation.

Wiring Diagram

The schematic above demonstrates the recommended way of wiring the LT-40D / LT-40E within a usual distribution board.

Type 2 Surge Protector Comparison Guide: Choose the Right Option

When assessing the options available for SPD, it is necessary to verify the protective level (Up), discharge ability (In/Imax or Iimp) and the applicable norm. Our representatives will be able to suggest an appropriate connection solution.

Export Markets & Country Compatibility

We deliver our SPDs to partners for their distribution all over the globe, making sure that the configuration is in full compliance with the power supply, earthing system and standards at the receiving locations.

SPD Dimensions, Weight & Packing

Small and efficient, the LT-40D and LT-40E can be directly mounted on the rail of any electrical distribution board. Information on its size and packing specifications is included in its corresponding documentation package.

• The LT-40D and LT-40E in compact form for mounting on DIN rail
• Protection for terminals during transportation
• Providing of dimensional drawings along with the product

Dimensional Drawing

According to the dimensional drawing shown above, the footprint of the mounting of the equipment in regard to DIN rail installation and panel layout of the equipment LT-40D / LT-40E is presented.

Standards & certifications

The lightning suppression device LT-40D / LT-40E meets IEC 61643-11 and GB/T 18802.11 requirements. Certificates indicating the results of type and routine testing can be issued, if required.

• Standard: IEC 61643-11 / GB/T 18802.11.
• Certification: CE (according to model).
• Routine marking of terminals and polarity in accordance with the standards used.
• DIN rail mounting is possible in distribution boards.

OEM & B2B supply support

Whether you are looking for individual samples or container loads, our manufacturing team is here to serve distributors, OEMs, and business purchasers.

In case LT-40D/LT-40E configuration does not suit your needs, please provide us with the specific details of your project including power specifications, voltage, and quantities, and our export team will provide you with a detailed quotation based on your project as well as ensure timely delivery.

• Samples available for testing
• Flexible quantities for business projects and B2B procurement
• OEM and ODM for specific projects
• Custom marking, branding, and packaging solutions
• Technical support and certification

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Frequently Asked Questions About Type 2 Surge Protector

Can I order samples for testing?

Yes. There are samples as well as OEM/ODM support and wholesale pricing options available, exclusively for B2B customers.

What do In and Imax mean?

In is referring to the nominal discharge current while Imax means the maximum discharge current which can be tolerated by the SPD only once.

Which earthing systems does it support?

LT-40D / LT-40E can be used with TN, TT and IT according to the protected mode that has been set up (L-N, L-PE, N-PE).

What is a Type 2 SPD used for?

Type 2 SPD is used to protect low-voltage distribution boards and equipment downstream from switching and lightning transients.

Where should the LT-40D / LT-40E be installed?

Installation must be done on the main or sub-distribution board on a DIN rail close to the incoming supply with short leads to earth.