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Installation & Application（安装应用） The KDY-40B PCB-mounted lightning arrester is a modular power lightning arrester unit, suitable for installation at the power input terminal of circuit boards. This lightning arrester module has a fully sealed enclosure, waterproof and dustproof, compliant with IP65 protection rating, and belongs to Class III power lightning arrester.
This lightning arrester uses high-energy voltage-limiting components for protection, with high current-carrying capacity, low residual voltage, and features leakage current blocking and dynamic thermal tripping functions. The product has a compact size and adopts PCB soldering installation method. According to the number of power lines, 1P to 4P lightning arrester combinations can be selected, making it very convenient to use. It is a matching product for lightning and surge protection at the power input terminal of circuit boards in instruments and equipment.
Technical Parameters（技术参数） | Specification | KDY-40B |
|---|---|
| SPD Model | KDY-40B |
| Rated Voltage (Un) | 380V/500V |
| Maximum Continuous Operating Voltage (Uc) | 385V/510V |
| Nominal Discharge Current (In) (8/20µs) | 20kA |
| Maximum Discharge Current (Imax) (8/20µs) | 40kA |
| Voltage Protection Level (Up) | ≤1.5kV/1.9kV |
| Response Time | 25ns |
| Maximum Operating Current | 10A (in series connection) |
| Communication Contact | With communication interface (normally closed contact) |
| Testing Standard | GB18802.1 |
| Certification | Type Test Certification |
| Interface | |
| Connection Type | Plug-in installation |
| Operation Indicator | No |
| Power Supply | |
| Applicable Power Supply | AC 380V |
| Power System | Three-phase power system |
| Mechanical Characteristics | |
| Housing Material | Flame-retardant plastic |
| Dimensions (W×H×D) | 45.6×11.7×41.6 (mm) |
| Weight | 0.1kg |
| Installation Method | 35mm standard DIN rail mounting |
| Operating Environment | |
| Operating Temperature | -40℃ to +80℃ |
| Storage Temperature | -40℃ to +80℃ |
| Relative Humidity | 5 to 95% (non-condensing) |
| Protection Rating | IP20 |
| Altitude | ≤3000m |
Ordering and Model Selection（订货选型） | Product model | Product description |
|---|---|
| KDY-40B/385 | PCB-mounted Surge Protective Device (SPD), Operating voltage: Un=380V; Uc=385V; Imax=40kA (8/20μs), Up<1.5kV, Plug-in mounting. |
| KDY-40B/510 | LED Street Light Surge Protective Device (SPD), Operating parameters: Un=500V; Uc=510V; Imax=40kA (8/20μs), Up<1.9kV, Plug-in mounting. |
*Please send the inquiry email containing specific product requirements (such as model, quantity, technical parameters, etc.) to the designated email address salina@kejia.com.
（请将包含具体产品需求（如型号、数量、技术参数等）的询价邮件发送至指定邮箱 salina@kejia.com）
