LT-T25 B+C 690V T1+T2 Surge Protector 690V 760V Industrial
For buildings fitted with lightning protection systems, there is a Type 1+2 surge protection device that has an Iimp rating for the optimum point of lightning current and Imax rating for the surge discharge. Being a factory-direct SPD supplier, Leitai Electric offers its clients the best prices compared to the competitors.
Applications & circuit protection
The LT-T25 B+C 690V is utilized for the defense of 690V/760V industrial networks by providing Type 1+2 protection, which deals with lightning discharge currents and excessive surge currents in mining, marine and industrial applications. It is specified for installations in the following fields.
- Mining sites: 690V lightning protection of the networks.
- Marine sector: maintaining protection of ships with 690V supply systems.
- Industrial fields: protection of heavy current distribution in industries.
- Wind turbines: maintaining protection of the 690V converter and generator.
Schematic Diagram
The diagram above shows the inner circuit and the connection modes of the surge protector.
Construction & operating reliability
Thanks to the incorporation of powerful MOV and GDT components, the LT-T25 B+C 690V is able to provide excellent clamping performance as well as effective separation after protection is activated. Being produced in one factory from its MOV selection to impulse testing of the whole device provides clients with full transparency about the SPD production process.
- Hybrid protection with the MOV and GDT technology for quick response and low leakage.
- Thermal disconnecting system with a failure indication.
- Enclosure is IP20 rated and flame resistant UL94 V0.
- Passed IEC 61643-11 / GB/T 18802.11 testing.
690V T1+T2 Surge Protector Specifications & Technical Data
| Technical Data | Value |
|---|---|
| Uc | 690V |
| Un | 220V |
| Iimp | 25kA |
| In | 25/50kA |
| Imax | 50/120kA |
| Up | 2.0kV |
690V T1+T2 Surge Protector for Sale: Factory Pricing & Sales Support
There are many factors that determine SPD price: the type of SPD, its discharge capacity, its voltage rating and the amount ordered. The price of our LT-T25 B+C 690V SPD is quoted from the basic price list, discounts are available.
- Standard pricing for manufacturer products
- Personalized solutions available
- Draft a customized quotation
690V T1+T2 Surge Protector Wiring, Installation & Connection Guide
Attach the LT-T25 B+C 690V SPD using the shortest leads possible from your lightning surge protectors to the earth point. Check polarity and terminal torque according to the specification sheet and ensure that the connection process does meet the recommended guidelines in terms of securing the connection by using an external disconnector.
- Connecting the device to the PE terminal
- Using external disconnector as required
- Provided installation diagram
Wiring Diagram
The diagram used for this illustration illustrates the optimum wiring for LT-T25 B+C 690V for a regular distribution board, with L, N and PE clearly written according to the accepted regulations.
How Does 690V T1+T2 Surge Protector Compare to Alternative Protection?
When considering the choice of SPD, it is important to take into account the protection level (Up), discharge capacity (In/Imax or Iimp) and the existing standard. Our experts will help you find the right solution for your network and equipment.
| Feature | This SPD | Alternative |
| Type | Type 1+2 (T1+T2) SPD (690V) | Other SPD types available |
| Discharge capacity | 25/50kA / 50/120kA | Matched to network duty |
| Protection level | 2.0kV | Lower Up options available |
| Application | 690V Systems | Other installation types |
Export Markets & Country Compatibility
Leitai SPD has been supplied to the customers from more than 40 countries, and each supply is backed with all necessary certifications and documentation.
SPD Dimensions, Weight & Packing
The LT-T25 B+C 690V model uses a modular construction using standard housing. The weight and dimensions may vary depending on pole type; dimensional drawings are present in the specifications.
- Compact design of DIN rail for panel mounting
- Transport protection for terminals
- Illustration included showing dimensions of each model
Dimensional Drawing
The dimensional diagram provided depicts a mounting footprint for the LT-T25 B+C 690V, which is intended for the installation on the DIN rail and layout planning for panels.
Standards & certifications
The LT-T25 B+C 690V surge protective device is designed according to the requirements of IEC 61643-11 and GB/T 18802.11. Type-test and routine-test certificates are available according to the requirements of the project and destination market.
- Conformity to design standard: IEC 61643-11 / GB/T 18802.11.
- Certificates: CE (based on the model).
- Terminal and polarity markings according to the standard practices.
- Allows DIN rail installation in energy distribution centers.
OEM & B2B supply support
Leitai provides OEM/ODM, wholesale and distributorship options for surge protector devices, thanks to its factory located in China.
In case LT-T25 B+C 690V configuration does not fulfill your project requirements, just provide us with the required type, discharge capacity, voltage and quantity of surge protectors. Our export sales department will assist you on every SPD inquiry with regard to product selection, technical details and commercial terms of delivery.
- Sample copies available for product’s aproval.
- Purchasing with flexible quantities for project and B2B purchases.
- OEM and ODM options available for eligible projects.
- Custom marking, branding and packaging will be provided.
- Technical documentation and certificates available upon request.
690V T1+T2 Surge Protector FAQs: Common Buyer Questions Answered
What is a Type 1+2 SPD?
It is a combination of lightning current discharge (10/350us) with surge discharge capacity (8/20us) integrated into one derailed unit.
What is Iimp of the LT-T25 B+C 690V?
Iimp is included in specifications of LT-T25 B+C 690V. (Up to 6.25kA-25kA;10/350us).
Can I order samples for testing?
Yes. Samples, OEM/ODM services and wholesale prices are available for clients in B2B segments.
Does a T1+T2 SPD need additional Type 3 protection?
Although Type 1+Type 2 SPD is a good protection, it is advised to install Type 3 SPD as well near sensitive end devices, following a coordinated strategy of cascading protection system.
Where is the LT-T25 B+C 690V installed?
It is possible to install LT-T25 B+C 690V in the main distribution panel thus providing two stages of protection in the one unit.
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