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Tomzn SPD AC 275V 20KA~40KA - Lebcom Electrical and Solar Items

A 40kA AC Surge Protection Device (SPD) is a Class II (Type 2) device designed for AC power systems, providing protection against surges with a maximum discharge current (

cap I sub m a x end-sub

) of 40kA and a nominal discharge current (

cap I sub n

) typically around 20kA. It is ideal for residential or commercial sub-distribution boards to protect electronic equipment and home appliances from switching transients and indirect lightning strikes.

Protection Level: Class II (T2), ideal for second-stage protection.
Discharge Current:
$cap I sub m a x end-sub$
: 40kA (8/20
$mu$
s),
$cap I sub n$
: 20kA.
Voltage Rating (
$cap U sub c$
): Typically AC 275V, 385V, 400V, or 440V.
Installation: 35mm DIN rail, with hot-pluggable modules for easy maintenance.
Indications: Often features a visual indicator (green: OK, red: fault).
Response Time: Fast acting, usually
$is less than or equal to$
25ns.

Use Cases: Protects against electrical system surges, lightning in sub-panels, and sensitive electronics in homes and factories.
Installation Site: Installed between the switchboard switch and load equipment, generally near terminal equipment.
Wiring: Requires 32A-40A backup fuses or breakers, and connecting wires should be as short as possible, preferably under 50 cm.
Configuration: Available in 1P, 1P+N, 3P, 3P+N, or 4P for different TN/TT/IT network configurations.

AC Surge Protector Protection AC SPD 1P+N 20KA~40KA C ...
About this Item. 【Effective Circuit Protection】The surge protector perfectly protects the electrical system from lightning strikes...
Amazon.com
40KA AC Power SPD - CHENZHU
Nov 5, 2025 — This 40kA power SPD features a hot-pluggable design that enables true zero-downtime maintenance. Unlike our 80kA surge protector, ...
Surge-Trap® Pluggable STPT2 Series - 40kA - Mersen
STP T2 40 is the series of Type 2/Class II devices for discharging voltage surges, in accordance with EN/IEC 61643-11. Suitable fo...
Mersen

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GSP9-40KA-2P AC splash protector; Type: Other; Product name: surge protection device/SPD AC; Maximum continuous working AC voltage: AC 275V, AC 385V, AC 400V, ...Read more

40KA AC Power SPD

Shanghai Chenzhu Instrument CO., LTD.

https://www.chenzhuisolator.com › products › 40ka-ac-...

Shanghai Chenzhu Instrument CO., LTD.

https://www.chenzhuisolator.com › products › 40ka-ac-...

This 40kA power SPD features a hot-pluggable design that enables true zero-downtime maintenance. Unlike our 80kA surge protector, which is designed for main ...Read more

40ka spd ac from www.chenzhuisolator.com

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Aexit AC 385V Power Protection 40KA 3 Phase Lighting ...

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Product Name : Surge Protector;Model : LYD2-C/3;Pole : 3 Phase; Voltage(Uc) : AC 385V;Maximum Dishcharging Current : 40KA;Nominal Dishcharging Current (In) ...Read more

Surge-Trap® Pluggable STPT2 Series - 40kA

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https://www.mersen.com › ... › Surge Protection

Mersen

https://www.mersen.com › ... › Surge Protection

STP T2 40 is the series of Type 2/Class II devices for discharging voltage surges, in accordance with EN/IEC 61643-11.Read more

AC Surge Protector Protection AC SPD 1P+N 20KA~40KA ...

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https://www.amazon.com › Protector-Protection-20KA-...

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【Effective Circuit Protection】The surge protector perfectly protects the electrical system from lightning strikes or overvoltages.Read more

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AC 350V 40kA spd OEM/ODM surge protection device ...

eBay

https://www.ebay.com › itm

eBay

https://www.ebay.com › itm

AC 350V 40kA spd OEM/ODM surge protection device AC surge protector ; Nornimal discharge current In (kA). 20kA ; Max. discharge current(8/20us) Imax (kA). 40kA.Read more

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AC 2pole 40kA SPD Surge Protection Device 385v AC by ...

Must Power Energy

https://mustpowerenergy.com › Breakers & SPDs

Must Power Energy

https://mustpowerenergy.com › Breakers & SPDs

Product : Surge protection device Model : IPR-40K Related Operating Voltage Un : 385V AC Maximum Continuous Operating Voltage Uc : 415 V Nominal Discharge ...Read more

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275v type 2 40ka ac power surge protective device spd

Anhui Jinli Electric Tech. Co., Ltd

https://www.jinlispd.com › 275v-type-2-40ka-ac-power...

Anhui Jinli Electric Tech. Co., Ltd

https://www.jinlispd.com › 275v-type-2-40ka-ac-power...

AC power surge protective device is used in AC power supply system (50/60Hz) and low-voltage control system to protect from lightning striker and transient ...Read more

Web results

Tomzn SPD AC 275V 20KA~40KA

lebcom.com

https://lebcom.com › Tomzn Products

lebcom.com

https://lebcom.com › Tomzn Products

The Tomzn SPD AC (Surge Protection Device) is designed to protect electrical systems from voltage surges, commonly caused by lightning strikes or switching ...Read more

$9.00In stock

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GEYA GSP9-DP40 AC SPD 1P+N 2P 275V 40KA ...

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High capacity AC surge protector with 40KA rating, ideal for home lightning protection. GSP9-DP40 by GEYA offers reliable SPD solution.

$17.21In stock15-day returns

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