LT-20/40 Type 2 Surge Protector 20kA 40kA AC Distribution
a Type 2 SPD that manages most of the surge energy in the electrical distribution system of a building and its distribution panels, circuits, and loads against the voltages of surge pest As the factory-direct SPD manufacturer and supplier, Leitai Electric produces surge protectors at very reasonable factory prices, tailored designs, and full technical documents.
Applications & circuit protection
The LT-20 / LT-40 is used where low-voltage AC distribution panels, sub-distribution boards, and cabinets are installed in commercial and industrial establishments. It is mainly used for the following installation types.
- AC distribution boards: Overall and subordinate protection.
- Panel builders: Integrated protection of OEM cabinets.
- Retail and office buildings: Lighting, socket and HVAC protection.
- Industrial motor control centres: Electric motor protection..
Schematic Diagram
The diagram shown in this section explains the circuit within the LT-20/LT-40 surge protector.
Construction & operating reliability
As a result of its sophisticated construction with high energy MOVs and internal thermal disconnector, LT-20/LT-40 provides stability in clamping process as well as long operational life. The entire production process consists of all stages of MOV preparation, from obtaining raw materials, assembling components, using thermal bonding technology, up to the provision of impulse testing.
- Major features include:
- high speed of operation,
- thermally protected disconnector with alarm signal,
- IP20 housing made of UL94 V0 rated material,
- testing done according to the requirements of IEC 61643-11 / GB/T 18802.11 standard.
Type 2 Surge Protector Specifications & Technical Data
| Technical Data | Value |
|---|---|
| Uc | 275/320/385/440V |
| In | 10kA |
| Imax | 20kA |
| Up | <1.3-1.8kV |
| ta | <25ns |
Type 2 Surge Protector Sales & Wholesale: Get the Factory Quote
Your price information for LT-20 or LT-40 is determined on the basis of your requirement, type and capacity of discharge, voltage as well as order quantity. The lowest possible price obtainable is factory-direct and applies to wholesale, OEM and project orders.
- Standard prices taken from the factory price list
- Volume prices and custom configurations for each order
- Written quote covering specifications provided by you
Type 2 Surge Protector Wiring, Installation & Connection Guide
Connect the LT-20/LT-40 SPD parallel with the active conductors to the PE terminal in the most convenient orientation, using the minimal length of leads that is applicable in this case. Make sure you observe polarity and torque specifications according to the specification documentation.
- Connection using short leads to the PE terminal is required
- External disconnector must be used as prescribed
- The wiring scheme is included in the technical manual
Wiring Diagram
The connection diagram here illustrates the best wiring for LT-20 / LT-40 functions in a distribution board according to established wiring conventions. The terminals for line (L), neutral (N), and protective earth (PE) are correctly identified.
Type 2 Surge Protector Comparison Guide: Choose the Right Option
Choose one’s surge protection device based not only on the specifications of the type of device but also on its ability to discharge and the voltage it can handle. The type 3 surge protection devices are meant to protect connected equipment while type 2 devices protect distribution systems and type 1 devices discharge lightning current.
| Feature | This SPD | Alternative |
| Type | Type 2 (T2) SPD | Other SPD types available |
| Discharge capacity | 10kA / 20kA | Matched to network duty |
| Protection level | <1.3-1.8kV | Lower Up options available |
| Application | AC Distribution | Other installation types |
Export Markets & Country Compatibility
Leitai surge protection devices are shipped to avenues of distribution, switchgear makers and EPC contractors everywhere from Europe to the Middle East to Southeast Asia to Latin America and Africa depending on local voltage and standards.
SPD Dimensions, Weight & Packing
The LT-20 / LT-40 which is very compact and modular in the design can be mounted directly to the DIN rail in the distribution boards. All dimensional specifications and packing information is provided along with product documentation.
- Compact DIN rail profile for mounting on the panel.
- Terminals protected during transport
- Dimension drawing provided against each model
Dimensional Drawing
The illustration shown above indicates the space needed for the LT-20 and LT-40 in the plans of DIN rail installation and mounting.
Standards & certifications
According to IEC 61643-11 and GB/T 18802.11 regulations, the LT-20 / LT-40 system is created. The documents about type and factory testing can be provided according to project and destination market requirements.
- Design standard: IEC 61643-11 / GB/T 18802.11.
- Certifications: TUV, CE, CQC (as required).
- The terminal and polarity are marked according to the standard.
- The unit can be installed on the DIN rail in the distribution boards.
OEM & B2B supply support
Leitai provides OEM/ODM, wholesale, and distribution programs for surge protective devices with the backing of its China factory.
If LT-20 / LT-40 configuration does not fit your needs, please let us know what you need in terms of type, discharge capacity, voltage, and quantity. You can send us your specifications for a quote.
- Samples available for product evaluation.
- Flexible orders for projects and B2B purchases.
- OEM and ODM support for appropriate projects.
- Custom labeling, branding and packaging choices.
- Technical documentation and certification assistance are provided.
Frequently Asked Questions About Type 2 Surge Protector
What is a Type 2 SPD used for?
Yes, Type 2 SPDs offer effective protection against surges generated by equipment and lightning strikes.
Can I order samples for testing?
We do provide samples along with the OEM/ODM service and wholesale prices for our B2B partners.
Which earthing systems does it support?
LT-20 / LT-40 can be used in TN, TT and IT earthing systems according to the protection circuits realized (L-N, L-PE, N-PE).
Does the LT-20 / LT-40 have a failure indicator?
It does have an indicator which is visible, as well a thermal disconnector for the technology inside the module.
What do In and Imax mean?
In stands for nominal discharge current (8/20us) in the standard situation; Imax is the maximum amount of discharge current the SPD is allowed to endure just once.
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