What topology does KYSPD-20T2+3-3+1 use?

It uses 3+1 topology: L–N MOV, N–PE GDT+MOV.

What is its surge discharge capacity?

Nominal discharge current 10 kA, maximum discharge current 20 kA.

In 230/400 V AC three-phase + N systems, especially 240V distribution panels.

Does it support monitoring?

Yes, optional RC contacts provide remote signaling.

240v surge protection device | Reliable KYSPD-20T2+3-3+1

Name: 240V Surge Protection Device KYSPD-20T2+3-3+1
Brand: Kuangya

The Kuangya KYSPD-20T2+3-3+1 is a 240V surge protection device designed for three-phase + neutral systems at 230/400 V AC. It uses a 3+1 topology, with MOV protection for L–N and coordinated GDT+MOV protection for N–PE, offering reliable suppression of transient overvoltages from lightning and switching surges.Its compact pluggable cartridge design allows easy replacement, while integrated thermal disconnectors ensure safe operation. Visual green/red indicators provide status feedback, and optional RC contacts enable remote fault monitoring.

Caratteristiche principali

Class II+III / Type 2+3 surge protection device with 3+1 topology.
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).
Response time: < 25 ns (L–N), < 100 ns (N–PE).
Back-up fuse: max 63 A gL/gG; ISCCR 10 kA AC.
Pluggable module, thermal disconnector, green/red fault status indicator.
Optional RC remote signaling contacts for BMS/PLC integration.
Housing IP20, UL94 V-0 thermoplastic; operating temperature -40 °C to +70 °C.
DIN rail mounting (35 mm, EN 60715); IEC/EN 61643-11 compliant.

Specifiche tecniche

Product Code	KYSPD-20T2+3-3+1
Category	240V surge protection device
Nominal System Voltage	230/400 V AC
Topology	3+1 (L–N MOV, N–PE GDT+MOV)
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
Tempo di risposta	< 25 ns (L–N), < 100 ns (N–PE)
Back-Up Fuse (max)	63 A gL/gG
Short-Circuit Current Rating (ISCCR)	10 kA AC
Temperatura di esercizio	-40 °C to +70 °C
Montaggio	35 mm DIN rail, EN 60715
Enclosure / Protection	Thermoplastic UL94 V-0 / IP20
Remote Signaling (RC)	Opzionale; AC 250 V / 0,5 A; DC 250 V / 0,1 A; 125 V / 0,2 A; 75 V / 0,5 A
Standard	IEC/EN 61643-11

Cablaggio e dimensioni

Connection diagram 240V surge protection device KYSPD-20T2+3-3+1

Dimensions 240V surge protection device KYSPD-20T2+3-3+1

Applicazioni

Main distribution boards in residential and commercial buildings (240V systems).
Protection of elevators, industrial control systems, and sensitive electronics.
Panels requiring coordinated 3+1 surge protection in TT/TN-S networks.

FAQ

What topology does KYSPD-20T2+3-3+1 use? It uses 3+1 topology: L–N MOV, N–PE GDT+MOV.
What is its surge discharge capacity? In 10 kA, Imax 20 kA.
Where is it applied? In 230/400 V AC three-phase + N systems, especially 240V distribution panels.
Does it support monitoring? Yes, optional RC contacts provide remote signaling.
What is the maximum back-up fuse rating? 63 A gL/gG.

For detailed pricing and technical support, please contattateci.Explore more Kuangya solutions: SPD DC, AC Surge Protection.

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