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Type 2+3 Surge Protective Device 3P KYSPD-20T2+3-3P | Kuangya
Type 2+3 surge protective device 3P for three-phase (L1-L2-L3) 230/400 V AC networks.
Surge ratings: In 10 kA (8/20 µs), Imax 20 kA (8/20 µs), Up ≤ 0.3–1.8 kV depending on Uc.
Compact pluggable DIN-rail design, thermal disconnector with indicator, optional RC monitoring contacts.
designed for three-phase AC distribution systems at 230/400 V. It integrates Type 2
and Type 3 protection classes, providing coordinated surge suppression for
equipment sensitive to transient overvoltages from switching operations or lightning.The SPD uses MOV-based modules with pluggable cartridges for easy maintenance.
Integrated thermal disconnectors with visible fault indicators ensure safe operation,
while optional RC contacts allow remote fault monitoring and integration with building
management systems or control circuits.
Key Features
- Class II+III / Type 2+3 surge protective device for three-phase systems (3P: L1-L2-L3).
- Nominal discharge current (In): 10 kA (8/20 μs).
- Maximum discharge current (Imax): 20 kA (8/20 μs).
- Voltage protection level (Up): ≤ 0.3–1.8 kV depending on Uc (75–440 V).
- Fast response time < 25 ns for reliable transient suppression.
- Back-up fuse: max 63 A gL/gG; ISCCR 10 kA AC.
- Pluggable module with thermal disconnector and green/red status indicator.
- Optional RC contacts: AC 250 V / 0.5 A; DC 250 V / 0.1 A; 125 V / 0.2 A; 75 V / 0.5 A.
- Housing IP20, UL94 V-0 thermoplastic; operating temperature -40 °C to +70 °C.
- DIN rail mounting (EN 60715); IEC/EN 61643-11 compliant.
Specifications
| Product Code | KYSPD-20T2+3-3P |
|---|---|
| Category | Type 2+3 surge protective device 3P |
| Nominal System Voltage | 230/400 V AC |
| Poles | 3P (L1, L2, L3) |
| Continuous Operating Voltage (Uc) | 75 / 150 / 275 / 320 / 385 / 440 V |
| Nominal Discharge Current (In, 8/20 μs) | 10 kA |
| Maximum Discharge Current (Imax, 8/20 μs) | 20 kA |
| Voltage Protection Level (Up) | ≤ 0.3–1.8 kV |
| Response Time | < 25 ns |
| Back-Up Fuse (max) | 63 A gL/gG |
| Short-Circuit Current Rating (ISCCR) | 10 kA AC |
| Operating Temperature | -40 °C to +70 °C |
| Mounting | 35 mm DIN rail, EN 60715 |
| Enclosure / Protection | Thermoplastic UL94 V-0 / IP20 |
| Remote Signaling (RC) | Optional; AC 250 V / 0.5 A; DC 250 V / 0.1 A; 125 V / 0.2 A; 75 V / 0.5 A |
| Standards | IEC/EN 61643-11 |
Wiring & Dimensions
Connection diagram type 2+3 surge protective device 3P KYSPD-20T2+3-3P
Dimensions type 2+3 surge protective device 3P KYSPD-20T2+3-3P
Applications
- Three-phase distribution panels in commercial and industrial facilities.
- Protection of three-phase equipment such as motors, drives, and machinery.
- Coordination with upstream Type 1 SPDs in TT/TN networks.
FAQ
- What class of SPD is KYSPD-20T2+3-3P? It is Class II+III, Type 2+3 according to IEC/EN 61643-11.
- What is its surge discharge capacity? In 10 kA, Imax 20 kA per pole.
- Which systems is it designed for? Three-phase 230/400 V AC networks.
- Does it provide remote fault signaling? Yes, optional RC contacts are available.
- What is the maximum backup fuse rating? 63 A gL/gG.
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