LT-X15RT B+C T1+T2 Surge Protector 12.5kA Railway
A Type 1+2 surge protection device that features an Iimp rating for partial lightning current and an Imax rating for surge discharge, intended for the construction of lightning protection systems. Based in Wenzhou, Zhejiang, Leitai Electric operates as a leading Chinese company manufacturing lightning arresters and testing every product before shipment.
Applications & circuit protection
The LT-X15RT B+C is used in the applications where the Type 1 + 2 surge protective device for railway power and signalling systems is required. Its performance is based on the combination of lightning current (Iimp 12.5kA) and surge discharge (Imax 40kA) standards. It is often recommended for a number of points of installation including:
- Railway stations – Station power and signalling protection.
- Signalling systems – Lightning protection for signaling devices.
- Traction power – Auxiliary supply protection.
- Metro & LRT – Urban transport infrastructure.
Schematic Diagram
The schematic diagram shown above shows the internal protection circuit and the connection modes of the surge protective device LT-X15RT B+C.
Construction & operating reliability
The LT-X15RT B+C surge protective device is designed with high-energy MOV components and an internal built-in thermal disconnector which provides the HV protection features of the device that is stable functioning with a long service life. All production processes have dedicated production lines and quality checks that are carried out at every stage of the production so that the SW and electrical characteristics are consistent and traceable.
- High-energy MOV providing the fast protection.
- Thermal disconnector with visual failure indicator.
- IP20 rated housing made of flame-retardant material (UL94 V0).
- Tested for compliance with IEC 61643-11 / GB/T 18802.11 requirements.
T1+T2 Surge Protector Specifications & Technical Data
| Technical Data | Value |
|---|---|
| Uc | 275V |
| Un | 220V |
| Iimp | 12.5kA |
| In | 20kA |
| Imax | 40kA |
| Up | 2.0kV |
T1+T2 Surge Protector for Sale: Factory Pricing & Sales Support
The rates for LT-X15RT B+C are set in price for your specifications, type, discharge capacity, voltage, and order volume. Prices shown for wholesale, OEM, and project orders are factory-direct prices.
- Standard ratings based on the factory price schedule
- Custom configurations and volume pricing based on your order
- Written quotation on your specifications
T1+T2 Surge Protector Connection & Installation Basics
The LT-X15RT B+C SPD is wired into parallel to the circuit being protected and connected to earth terminals via the PE terminal. It is good practice to ensure that wires are kept as short as possible to avoid any residual voltage drop. In case of TN systems, the connection of L, N and PE terminals must follow the recommended wiring diagram.
- Parallel connections with wires to the PE terminal
- Recommended disconnector connected as per specifications
- Wiring diagrams provided in documentation
Wiring Diagram
The wiring layout shown in the diagram above illustrates the suggested connection of the LT-X15RT B+C in the typical distribution case where L, N and PE connectors are appropriately marked according to known practice.
T1+T2 Surge Protector vs Other Options: Key Differences for Buyers
When assessing a selection of surge protective devices, pay attention to the level of protection (Up), the discharged energy capacity (In/Imax or Iimp) and the relevant standard. Our experts will be glad to recommend the appropriate configuration to your electrical process.
| Feature | This SPD | Alternative |
| Type | Type 1+2 (T1+T2) SPD (Railway) | Other SPD types available |
| Discharge capacity | 20kA / 40kA | Matched to network duty |
| Protection level | 2.0kV | Lower Up options available |
| Application | Railway | Other installation types |
Export Markets & Country Compatibility
Leitai surge protection devices have been exported to wholesalers, switchboard manufacturers and EPC contractors in Europe, Middle East, Southeast Asia, Latin America and Africa.
SPD Dimensions, Weight & Packing
There is a direct correlation between dimensions, type, and poles when it comes to products. LT-X15RT B+C provides the compact DIN-rail profile for panel installation with its terminals safe from damages during transport. The respective dimension drawings are included in the documents provided.
- Compact DIN-rail profile for panel installation
- Safe terminals during transport
- The given dimensions drawings provided per specification
Dimensional Drawing
The displayed dimensional drawing illustrates the mounting dimensions of the LT-X15RT B+C device, which allows for the design to comply with both the requirements standards for DIN rail assembly and panel layout.
Standards & certifications
The LT-X15RT B+C lightning protection device has been developed in compliance with the requirements of the IEC 61643-11 and GB/T 18802.11 standards. Upon request, the manufacturer can provide the necessary type tests and routine test documents depending on the needs of the customer and specific market.
- Applicable design specifications: IEC 61643-11 / GB/T 18802.11.
- Awards and certificates received: CE, CQC (depending on the model).
- Marking of the terminals and polarity in accordance with standard practices.
- The device has been developed with a DIN rail installation in mind.
OEM & B2B supply support
Our plant experts offer assistance to suppliers, OEMs and project clients ranging from small samples to bulk orders.
If the LT-X15RT B+C configuration doesn’t suit your project, simply inform us about your requirements and specifications such as voltage, discharge capacity, and quantity, and our export sales team will help you select the right SPD and provide you required technical and commercial information.
- Sample provision for product testing.
- Versatile orders executed from project or B2B purchases.
- OEM and ODM cooperation for different projects.
- Private labeling and marking services.
- Technical documentation and certification aid.
T1+T2 Surge Protector FAQs: Common Buyer Questions Answered
Does a T1+T2 SPD need additional Type 3 protection?
An SPD of Type 3 should be placed in a close vicinity of sensitive terminal devices depending on coordination and cascade principle.
What standards apply?
Combined T1 + T2 SPDs is tested under standards IEC 61643-11 / GB/T 18802.11 with type test documentation produced.
Can I order samples for testing?
Yes, samples, support for OEM/ODM production and wholesale pricing are available for businesses.
What is Iimp of the LT-X15RT B+C?
Iimp value is included in LT-X15RT B+C specifications and ranges from 6.25 kA to 25 kA with a pulse of 10/350us.
Where is the LT-X15RT B+C installed?
It is located at the main switchboard or service entrance saving the space of two protective stages.
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