LT-T25 Type 1 Surge Protector 25kA Iimp Lightning
Type 1 SPD that dissipates the lightning current (10/350us) immediately at the entry of the service facility, ensuring safety from both lightning surges and direct strikes Being a manufacturer and supplier of lightning protection items directly from the factory, Leitai Electric provides lightning protection items at factory prices, specifically tailored designs and full on-hand technical manuals.
Applications & circuit protection
The LT-T25 is utilized in conjunction with the Type 1 lightning swift discharger having an Iimp of 25kA for connecting the main supply distribution (lightning current 10/350). The product is significantly deployed in the following areas.
- Service entrance: Discharge of lightning current.
- LPS: Buildings having lightning protection.
- Main distribution: First level protection.
- Utility supply: Incoming supply protection.
Schematic Diagram
The given schematic depicts the inner construction of the LT-T25 surge arrestor and its working configurations.
Construction & operating reliability
The LT-T25 surge protection device uses high-capacity MOV components and consists of the built-in thermal disconnector. We control every step of production of the LT-T25, starting from selection of MOVs and finishing continuous testing operations in order to maintain the quality of surge protection devices.
- High-capacity MOV for high-speed response.
- Thermal disconnector with failure indicator.
- Housed in an enclosure that meets IP20 rating and is UL94 V0 compliant.
- Testing conforms to IEC 61643-11 / GB/T 18802.11 standards.
Type 1 Surge Protector Technical Specification & Selection Guide
| Technical Data | Value |
|---|---|
| Uc | 275V |
| Un | 220V |
| Iimp | 25kA |
| Up | 1.4kV |
Type 1 Surge Protector Sales & Wholesale: Get the Factory Quote
The costs of SPD are contingent on the style, discharge capacity, voltage rating, and the total quantity of SPDs required. In our case, we refer to LT-T25 pricing from our price list, where volume pricing is provided for going to distributors, OEM buyers, and project purchasers.
- Standard cost listings from our price list
- Custom configurations and bulk pricing depending on order qty
- Written price quote based on specs
Type 1 Surge Protector Wiring, Installation & Connection Guide
Install the LT-T25 SPD between the live wires and earth using short leads, ensuring the polarity of the connection and the terminal torque to conform to the requirement as per the data sheet. Protect the connection with the external disconnector given in the manual.
- Interconnection using short leads to PE terminal
- Use of external disconnector according to specifications
- Wiring diagram enclosed with the manual
Wiring Diagram
The wiring diagram above illustrates the recommended connection for the LT-T25. The diagram follows standard to label the different terminals of L, N and PE.
Type 1 Surge Protector Comparison Guide: Choose the Right Option
These are the recommendations concerning the choice of the SPD regarding the discharge capacity and voltage. The Type 3 devices protect the terminal equipment, Type 2 protects the distribution and Type 1 discharges the lightning current at the starting point.
| Feature | This SPD | Alternative |
| Type | Type 1 (T1) SPD | Other SPD types available |
| Discharge capacity | Per specification / 25kA | Matched to network duty |
| Protection level | 1.4kV | Lower Up options available |
| Application | Lightning Current | Other installation types |
Export Markets & Country Compatibility
Our SPDs are delivered to distribution partners across the world, tailored according to their specifications.
SPD Dimensions, Weight & Packing
LT-T25 has a modular casing with respect to installation on a 35mm DIN rail. Pole configuration determines weight and size; the specifications are described in the technical data sheet.
- High compact DIN-rail shape for cabinet installation
- Connections safeguarded during transportation
- Dimension drawings supplied for every version
Dimensional Drawing
The geometric diagram depicted above illustrates the plate with the dimensions of the LT-T25 device for installation on a DIN rail and layout of the panels.
Standards & certifications
The LT-T25 surge arrestor complies with IEC 61643-11 and GB/T 18802. 11 standards. The documentation for the type-testing and routine-testing can be provided as per the requirement of the project and country of installation.
- Standard: IEC 61643-11/GB/T 18802.11
- Compliance: CE certification (depending on the particular model)
- Marking and determining connections in the standard way.
- Installation on a DIN rail is allowed.
OEM & B2B supply support
Customized marking, branding, and packaging for OEM, wholesale and distribution programmes relating to surge protective devices (SPDs)
If your project requires another configuration type instead of LT-T25, simply provide us with the required configuration, discharge capacity, voltage, and required number of items. The export sales department is at your service to help you select appropriate SPDs and provide you with all necessary information about products, technical and commercial terms.
- Samples available for the evaluation of the product.
- Flexible quantities for a project and B2B purchasing.
- OEM and ODM support for relevant projects.
- Customized marking, branding and packaging solutions.
- Technical documentation and certification support.
Frequently Asked Questions About Type 1 Surge Protector
Where is the LT-T25 installed?
In the beginning of installation, in principle, in the principal distribution board or it is going to be the first panel after the supply entry.
What is Iimp?
Iimp is a lightning impulse current (10/350us) that is going to be discharged by the SPD, which is equal to, for example, 25kA on every pole for the LT-T25.
Does it also provide surge protection?
Yes, Type 1 SPDs are supposed to limit surge overvoltages. Besides, Type 1+2 units provide nominal discharge current capability.
Can I get a quotation for a project?
Yes, please send a request for written quotation including required Iimp, Uc, poles and quantity.
What standards apply?
Type 1 SPDs are subject to IEC 61643-11 / GB/T 18802.11 standard and test reports are produced per model.
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