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    AI Overview
    The Ultimate Protection: Type 2 40kA Surge Protector - LSP
    A Type 2 40kA SPD (Surge Protection Device) is a crucial electrical component, often DIN rail-mounted in main panels, designed to protect equipment by diverting large voltage spikes (like those from distant lightning or switching) safely to ground, handling up to 40,000 amps (40kA) of surge current to prevent damage to connected devices in homes, offices, and small factories. 
    Key Characteristics: 
    • Type 2/Class II: Indicates its placement in the electrical system, typically after a Type 1 device (at the main panel) or as the first stage in locations without direct lightning strikes.
    • 40kA (Imax): This is the maximum discharge current the device can safely handle in a single surge event (8/20µs waveform).
    • Nominal Discharge (In): Often around 15kA or 20kA, representing its typical surge handling capacity.
    • Voltage Rating (Uc): Common ratings are 275V, 320V, 385V, or 420V AC, matching the electrical system.
    • Installation: Usually mounted on a 35mm DIN rail in consumer units or distribution boards. 
    What it Does: 
    • Stops Surge Spread: Prevents overvoltages from traveling further into your installation.
    • Protects Loads: Safeguards sensitive electronics from damage caused by transient overvoltages.
    • Handles Medium Surges: Provides robust protection against common switching and induced lightning surges. 
    When You Need It: 
    • Homes (especially those with many electronics).
    • Offices and small commercial buildings.
    • As a secondary layer of protection after a Type 1 SPD in larger systems. 
    • MK Sentry 2-Pole Type 2 Surge Protection Device 40kA - Screwfix
      The MK Sentry 2-Pole Type 2 Surge Protection Device is a 40kA device that's suitable for low voltage electrical installations. It ...
      Screwfix
    • 83020150 - STPT2-40K150V-4P Surge Protection - 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
    • What is A 40KA Type 2 SPD? Features and Installation Points ...
      Dec 17, 2025 — 40KA Type 2 SPD is a surge protective device installed in main electrical panels, capable of safely discharging a maxi...
      www.britecelectric.com
    • Surge protection FAQ | Eaton
      The basic difference is that Type 1 devices are installed before the main device in the load center, while Type 2 are deployed aft...
      Eaton
    • 83020122 - STPT2-40K275V-2P Surge Protection | Mersen
      Surge Protection Device Type 2, 40kA Imax (8/20), 1Ph+N, 230/-V, 2+0 TNS, 2 ... IEC SPD Type, Class II. UL SPD Type, Type 2 Compon...
      Mersen
    • 2-Wire Transmitters
      fully protected inputs, i.e. continuous protection against overvoltage, transients, and accidental connection of up to 240VAC sust...
      Dataforth
    • MK Sentry 2-Pole Type 2 Surge Protection Device 40kA - Screwfix
      The MK Sentry 2-Pole Type 2 Surge Protection Device is a 40kA device that's suitable for low voltage electrical installations. It ...
      Screwfix
    • 83020150 - STPT2-40K150V-4P Surge Protection - 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
    • What is A 40KA Type 2 SPD? Features and Installation Points ...
      Dec 17, 2025 — 40KA Type 2 SPD is a surge protective device installed in main electrical panels, capable of safely discharging a maxi...
      www.britecelectric.com
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    My Ad Center

    83020122 - STPT2-40K275V-2P Surge Protection


    Mersen
    https://www.mersen.com › products › surge-trap-plugg...
    Mersen
    https://www.mersen.com › products › surge-trap-plugg...
    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
    type 2 40ka spd from www.mersen.com
    People also ask
    What is a 40kA type 2 SPD?
    The Ultimate Protection: Type 2 40kA Surge Protector - LSP
    A Type 2 40kA Surge Protection Device （SPD) is an essential component for electrical safety, designed to protect electrical systems from transient overvoltages caused by lightning strikes or power fluctuations. The 40 kA surge protector safely diverts overvoltages to ground.Jul 3, 2025

    The Ultimate Protection: Type 2 40kA Surge Protector - LSP


    lsp.global
    https://lsp.global › the-ultimate-protection-type-2-40ka-s...
    lsp.global
    https://lsp.global › the-ultimate-protection-type-2-40ka-s...
    What is a Type 2 SPD rating?
    Type 2 tested surge protective devices are usually used as the second protection stage in sub-distribution boards or in final circuits to protect equipment against overvoltages. T2 SPDs are characterized by their capacity to safely discharge current with an 8/20 µs waveform.

    Surge Protective Devices SPD T2 - ABB


    ABB Group
    https://new.abb.com › low-voltage › products › spd-t2
    ABB Group
    https://new.abb.com › low-voltage › products › spd-t2
    What does type 2 SPD mean?
    The Type 2 SPD is the main protection system for all low voltage electrical installations. Installed in each electrical switchboard, it prevents the spread of overvoltages in the electrical installations and protects the loads. Type 2 SPD is characterized by an 8/20 µs current wave.Jan 26, 2021

    The Surge Protection Device (SPD) - Electrical Installation Guide


    Electrical Installation Guide
    https://www.electrical-installation.org › enwiki › The_Su...
    Electrical Installation Guide
    https://www.electrical-installation.org › enwiki › The_Su...
    What is the difference between a Type 1 SPD and a type 2 SPD?
    The basic difference is that Type 1 devices are installed before the main device in the load center, while Type 2 are deployed after the main equipment. A Type 1 SPD is permanently connected at any location between the secondary of the utility service transformer and the service entrance primary overcurrent disconnect.

    Surge protection FAQ | Eaton


    Eaton
    https://www.eaton.com › en-us › products › surge-protec...
    Eaton
    https://www.eaton.com › en-us › products › surge-protec...
    Feedback

    Type 2 surge protection


    Phoenix Contact
    https://www.phoenixcontact.com › surge-protection › ty...
    Phoenix Contact
    https://www.phoenixcontact.com › surge-protection › ty...
    Type 2 SPDs are used in the subdistribution or machine control cabinets, where no direct lightning currents occur. More information.Read more
    type 2 40ka spd from www.phoenixcontact.com

    Type 2 Surge Protective Devices


    Surge Protection Depot
    https://www.spd-depot.com › catalog › shop › Type-2-...
    Surge Protection Depot
    https://www.spd-depot.com › catalog › shop › Type-2-...
    Type 2 Surge Protective Panels are mounted to the load side of an electric service panel and protect against residual external power disturbances.Read more
    type 2 40ka spd from www.spd-depot.com
    Free delivery over $500

    Type 2 Surge Protection Devices


    shopsiemensdirect.com
    https://www.shopsiemensdirect.com › catalog › shop
    shopsiemensdirect.com
    https://www.shopsiemensdirect.com › catalog › shop
    Type 2 Surge Protection Devices ; $381.44 / ea · 10 ea ; $239.03 / ea · 6 ea ; $377.40 / ea · 15 ea ; $194.89 / ea · 94 ea ; $234.27 / ea · 27 ea ...Read more
    type 2 40ka spd from www.shopsiemensdirect.com

    Surge Protection Device, Type 2, 20/40/60/80kA


    ATO.com
    https://www.ato.com › ... › Surge Protection Devices
    ATO.com
    https://www.ato.com › ... › Surge Protection Devices
    With max. discharge current of 20kA / 40kA / 60kA / 80kA, the SPD is designed in accordance with IEC Class II, reliable performance and low price.Read more
    type 2 40ka spd from www.ato.com
    $62.63 · In stock · 5.0(2) · Free delivery · 30-day returns

    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
    type 2 40ka spd from www.jinlispd.com

    The Ultimate Protection: Type 2 40kA Surge Protector - LSP


    lsp.global
    https://lsp.global › the-ultimate-protection-type-2-40ka-s...
    lsp.global
    https://lsp.global › the-ultimate-protection-type-2-40ka-s...
    Jul 3, 2025 — A 40kA Surge Protector is a tool that guards electrical systems. It protects them from sudden voltage increases, often caused by lightning or power changes.Read more
    type 2 40ka spd from lsp.global

    Surge Protector 2P-40KA Surge Secondary Lightning ...


    Amazon.com
    https://www.amazon.com › Protector-2P-40KA-Second...
    Amazon.com
    https://www.amazon.com › Protector-2P-40KA-Second...
    Surge Protector 2P-40KA Surge Secondary Lightning Arrester AC-SPD Arrester (Size : 2P-20KA) ; Quantity:1 ; Shipper / Seller.Read more
    type 2 40ka spd from www.amazon.com
    30-day returns

    Surge Protective Devices SPD T2


    ABB Group
    https://new.abb.com › low-voltage › products › spd-t2
    ABB Group
    https://new.abb.com › low-voltage › products › spd-t2
    Type 2 tested surge protective devices are usually used as the second protection stage in sub-distribution boards or in final circuits to protect equipment ...Read more
    type 2 40ka spd from new.abb.com
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    Buy Surge Protection Device AC 2Pole Type 2 275V Imax ...


    GoSwitchgear
    https://goswitchgear.com › product › surge-protection-...
    GoSwitchgear
    https://goswitchgear.com › product › surge-protection-...
    This 2-Pole, Type 2 SPD is designed for AC systems and can manage up to 40kA of surge current, ensuring robust protection against power surges.Read more
    type 2 40ka spd from goswitchgear.com
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