LT-20RT Type 2 Surge Protector 20kA Plug-in Replaceable

LT-20RT Type 2 Surge Protector 20kA Plug-in Replaceable

Type 2 SPD DIN-rail rated for nominal and maximum discharge current giving first-rate protection against surge in low voltage AC networks Leidai Electric is a well-known manufacturer of surge protection devices in China making SPDs at our plant in Wenzhou, Zhejiang with testing for every unit made before delivery

Applications & circuit protection

The LT-20RT is used where updated plug-in module concept permits rapid servicing. It is used in all rail traffic electrical systems, in AC busbars and distribution boards.

• Rail transit power: Protection from surges for the supply of the stations and the network.
• Busbars: The plug-in model eliminates downtime.
• Maintenance of panels: The hot-swap module provides repairs without rewiring.
• Building services: The LT-20RT protects the low-voltage supply of the buildings, offices, and shops.

Schematic Diagram

The diagram above shows how the LT-20 device works and how it connects to external equipment.

Construction & operating reliability

The LT-20 device uses MOV (metal oxide varistor) technology to protect against voltage surges, while providing thermal safety with its internal thermal generating device for continuous operation. Our manufacturing method includes the full process of electronics manufacturing that includes parts production and testing.

• High-energy MOV based technology is utilized for rapid response.
• Thermal disconnection with visible failure indication.
• IP20 rated housing made of flame resistant UL94 V0 compliant material.
• Tested against IEC 61643-11 / GB/T 18802.11 standards.

Type 2 Surge Protector Specs, Sizes & Standards at a Glance

Type 2 Surge Protector Sales & Wholesale: Get the Factory Quote

The cost of the SPD varies with respect to type, discharge capacity, voltage rating, and quantity. Our quotation is based on the LT-20RT price list for factory prices only. Volume pricing is provided for distributors, OEM customers, and project buyers.

• Standard pricing provided from the price list
• Custom configurations for pricing according to orders
• Written quotation based on your required specifications

Type 2 Surge Protector Wiring, Installation & Connection Guide

Mount the LT-20RT on a 35 mm DIN rail near the panel/equipment being protected. Connect in parallel to the terminal markings on the enclosure and to the wiring schematic found in the product’s manual.

• Connection in parallel with minimal lead length to PE
• External switch installed according to specifications
• Wiring schematic provided with the product’s manual

Wiring Diagram

The diagram of connections that is illustrated above recommends the right procedure and wiring for the LT-20RT, especially for the usual distribution board.

Type 2 Surge Protector Comparison Guide: Choose the Right Option

In the process of considering SPD systems, do not forget to check the level of protection (Up), the ability to handle surges (In/Imax or Iimp), and the corresponding standard. We can help choose the right configuration for your network and equipment.

Export Markets & Country Compatibility

We dispatch SPDs through our partners worldwide, making sure that the supply voltage, connection system, and standards correspond to the requirements of each particular market.

SPD Dimensions, Weight & Packing

The LT-20RT is designed to be compact and modular, allowing it to fit into distribution boards by mounting directly on the DIN rail. All the relevant details, including dimensions and packing information, is provided with the product documentation.

• Panel-mounting requirements covered while being compact
• Terminals safe during transportation
• Available with dimension drawings

Dimensional Drawing

The figure above depicts the mounting dimensions of the LT-20RT concerning installation on DIN rail and panel design.

Standards & certifications

The LT-20RT surge protection device is manufactured according to IEC 61643-11 and GB/T 18802.11 standards. The type test or the routine tests reports can be provided as per requirements of projects and destination market.

• Design standard: IEC 61643-11 / GB/T 18802.11.
• Certificates: CE, CQC (for each model).
• Standard markings for terminal and polarity are maintained.
• Can be adopted for usage in devices with distribution boards.

OEM & B2B supply support

SPDs can benefit from special programmes such as OEM, wholesale and distribution programmes with custom marking, branding and packaging.

Let us know which particular type, capacity, voltage and quantity you need in case the LT-20RT configuration does not fit your project. Our export specialist will prepare and send you a formal quotation and a confirmation regarding the lead time of your order.

• An opportunity of getting samples for product evaluation purposes.
• Possible to order a flexible quantity of the needed products.
• Hybrid project support in terms of OEM and ODM.
• Use of custom markings, branding and packaging.

Request a Quote

Type 2 Surge Protector Buyer FAQ: What You Need to Know

What do In and Imax mean?

In refers to the rated discharge current (8/20us) for continuous duty and Imax indicates the total discharge current that the SPD can handle one time.

What is a Type 2 SPD used for?

A Type 2 SPD is used for safeguarding low-voltage distribution boards and equipment made use of in the process of switching and the current of induced lightning.

Can I order samples for testing?

Yes, it is possible to get samples and also be available for wholesale pricing and OEM/ODM support.

Where should the LT-20RT be installed?

Position it on the DIN rail making use of the supply line as short as possible.

Which earthing systems does it support?

It provides support for TT, TN and IT systems based on the settings and available modes.