LT-T25 B+C T1+T2 Surge Protector 25kA Commercial Buildings

LT-T25 B+C T1+T2 Surge Protector 25kA Commercial Buildings

A surge protection device of Type 1+2 type with Iimp rating for partial lightning current as well as Imax rating for surge discharging application. Buildings with lightning protection devices which have being engineered by Leitai Electric is a reliable manufacturer of surge protection device from China where the production occurs in a factory located in Wenzhou, Zhejiang. Each unit being produced after passing test conditions is shipped.

Applications & circuit protection

The LT-T25 B+C is utilized for Type 1+2 hybrid lightning and surge protection of commercial buildings, rated at Iimp 25kA and Imax 50kA. It is mainly used for the following installation applications:

• Commercial buildings: Type 1+2 combination protection.
• Offices: Protection of main distribution boards.
• Shopping malls: Protection of meter boxes.
• Hotels and hospitals: Reliable protection of the supply.

Schematic Diagram

The diagram above shows the circuit and types of connections in the LT-T25 B+C surge protection device.

Construction & operating reliability

The LT-T25 B+C protects against surges by using high-performance MOVs and an inbuilt thermal disconnector device. All surge protection devices undergo assembly, aging, and testing before receiving packaging. All test documents are kept for traceability purposes.

• High-energy MOVs for quick response.
• Thermal disconnector featuring visual failure indication.
• IP20 housing, flame resistant UL94 V0 making.
• Testing against IEC 61643-11 / GB/T 18802.11 standards.

T1+T2 Surge Protector Specifications & Technical Data

Where to Buy T1+T2 Surge Protector at Factory Sales Prices

The price of SPD is affected by its type, discharging capacity, voltage rating, and quantity. The price of LT-T25 B+C is quoted from our factory price list, and this includes volume pricing for distributor, OEM customers and project buyers.

• Standard prices given from the factory price list
• Custom configurations and volume pricing offered
• Written quotation in accordance with your specs

T1+T2 Surge Protector Connection & Installation Basics

The LT-T25 B+C SPD is installed in parallel to the circuit that requires protection and grounded via the PE terminal. Lead lengths should be minimized to keep the voltage level down. In the case of TN systems, connect the terminals L, N and PE in accordance with the supplied connection diagram.

• Parallel connection to the PE terminal
• External disconnector in accordance with instructions
• Connection diagram is included with the product documentation

Wiring Diagram

The system diagram illustrates the recommended electrical connections for the LT-T25 B+C in the distribution board. Terminal labeling follows the standard convention for L, N and PE.

How Does T1+T2 Surge Protector Compare to Alternative Protection?

Selecting a suitable surge protection diver device is important. A Type 2 SPD is normally the best option for general installation while in some locations where there will be lightning strikes; Type 1, Type 2, or a combination of both would be required.

Export Markets & Country Compatibility

SPDs are shipped to locations across the globe, configured according to the destination country voltage and earthing system specifications.

SPD Dimensions, Weight & Packing

Components come in various sizes and types. The LT-T25 B+C is designed using a compact DIN-rail profile for installation on a panel, ensuring protection for the terminals while in transit. There are detailed dimension drawings included in the technical documentation.

• Compact DIN-rail profile for mounting
• Sealed terminals for protection during transportation
• Dimension drawing available

Dimensional Drawing

The drawing above depicts the mounting profile of the LT-T25 B+C for installation in a DIN rail system and for planning the panel layout.

Standards & certifications

This product LT-T25 B+C is manufactured according to the requirements of the IEC 61643-11 and GB/T 18802.11 standards and there will be the certification documentation available about the type tests and product tests based on the project and market destination if needed.

• Standards: IEC 61643-11/GB/T 18802.11.
• Certification: CE (for all kinds).
• Wiring and polarity marking according to standards.
• Possibility to install on the DIN rail of distribution boards.

OEM & B2B supply support

OEM, wholesale, and distribution programs for transient surge devices are offered, with custom marking, branding, and packing.

If the LT-T25 B+C configuration does not suit your project send us the required type, discharge capabilities, voltage, and quantity. Contact our sales team to get a quotation from us.

• Product samples are available.
• Purchase in flexible quantities for your project and B2B buying.
• We can assist with the OEM arrangements and ODM support for suitable projects.
• Custom marking, branding, and additional packaging options available for our SPS devices.

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T1+T2 Surge Protector Buyer FAQ: What You Need to Know

What is a Type 1+2 SPD?

It is a combination of lightning current (for example 10/350us) and surge discharge capabilities (for example 8/22us) in one DIN-rail mount.

Can I order samples for testing?

Yes, samples, OEM/ODM, and wholesale prices are available for B2B clients.

Does a T1+T2 SPD need additional Type 3 protection?

For sensitive terminals, it is advisable to include an extra Type 3 SPD near the outlet point, with coordination with the cascade T1+T2.

Where is the LT-T25 B+C installed?

At the main distribution board or service entrance, taking the place of two protection levels.

What standards apply?

Combined T1+T2 SPDs are tested according to standards IEC 61643-11/GB/T 18802.11 and have type test documentation as proof.