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AC Surge Protection Device KYSPD-25T1-3P | Kuangya
Three-pole ac surge protection device for main distribution boards and service entrance.
Impulse current Iimp 25 kA (10/350 μs) per pole, In 25 kA, Imax 100 kA.
Pluggable cartridge with status indicator; optional RC contacts; DIN-rail installation.
Key Features
- Complies with IEC/EN 61643-11, Category: Class I / Type 1.
- Three-pole configuration; Iimp 25 kA per pole; In 25 kA; Imax 100 kA.
- Nominal system voltage Uo/Un: 230/400 V AC.
- Uc options: 320 / 385 / 440 V AC; voltage protection level (Up): ~1.6–2.0 kV.
- Fast response time < 25 ns; reliable MOV-based design.
- Pluggable cartridge with thermal disconnector and visual indicator.
- Optional RC contacts for remote status signaling.
- Housing: UL94 V-0 thermoplastic; IP20 built-in; DIN 35 mm rail mount.
- Trusted as a first-stage ac surge protection device for heavy-duty systems.
Specifications
| Parameter | Value |
|---|---|
| Product Code | KYSPD-25T1-3P |
| Category | AC Surge Protection Device (Type 1 / Class I) |
| Nominal System Voltage (Uo/Un) | 230 / 400 V AC |
| Max. Continuous Operating Voltage (Uc) | 320 / 385 / 440 V AC |
| Nominal Discharge Current (In, 8/20 μs) | 25 kA |
| Max. Discharge Current (Imax, 8/20 μs) | 100 kA |
| Impulse Discharge Current (Iimp, 10/350 μs) | 25 kA per pole |
| Voltage Protection Level (Up) | ~1.6–2.0 kV |
| Response Time | < 25 ns |
| Follow Current Interrupt Rating | 100 A RMS |
| Short-Circuit Current Rating (ISCCR) | 50 kA |
| Backup Fuse (max) | 315 A gL/gG |
| Operating Temperature | -40 °C … +70 °C |
| Mounting | 35 mm DIN rail (EN 60715) |
| Enclosure | Thermoplastic, UL94 V-0 |
| Protection Degree | IP20 (built-in) |
| Remote Signaling | Optional RC contacts |
| Standards | IEC 61643-11 / EN 61643-11 |
This ac surge protection device is recommended for use in TN-S, TN-C, and TT systems, ensuring maximum reliability in lightning-prone areas.
Wiring & Dimensions
- Connection diagram: kyspd-25t1-3p-connection
- Dimensions: kyspd-25t1-3p-dimensions
Applications
- Main distribution boards and service entrances in industrial facilities.
- First-stage ac surge protection device in coordinated SPD systems with Type 2 and Type 3 devices.
- Commercial buildings requiring reliable lightning current handling.
FAQ
Where should KYSPD-25T1-3P be installed?
It should be installed at the service entrance or main distribution board as the first-stage ac surge protection device.
What is the discharge current rating?
The device withstands Iimp 25 kA per pole, In 25 kA, and Imax 100 kA.
Does it support different earthing systems?
Yes, it is suitable for TN-S, TN-C, and TT systems.
Can the module be replaced?
Yes, the pluggable cartridge makes this ac surge protection device easy to service and maintain.
Is remote signaling available?
Yes, optional RC contacts allow integration with monitoring systems.
What standards does it comply with?
IEC/EN 61643-11 standards for AC surge protective devices.
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