{"title":"Surge protection","description":"","products":[{"product_id":"ac-surge-lighting-arrester-spd-60ka","title":"AC Surge Arrester SPD 60KA - Protection class B","description":"\u003cp data-start=\"156\" data-end=\"386\"\u003eThe AC Surge Protection Device (SPD), also known as a surge suppressor or surge arrester, is designed to protect low voltage AC power systems from transient overvoltage caused by lightning strikes and switching surges.\u003c\/p\u003e\n\u003cp data-start=\"388\" data-end=\"617\"\u003eIt is suitable for TN-S, TN-C-S, TT and IT earthing systems operating at 50\/60Hz and below 380V AC. The device effectively diverts surge energy to earth, protecting sensitive electrical and solar PV equipment from damage.\u003c\/p\u003e\n\u003cp data-start=\"619\" data-end=\"948\"\u003eIn the event of overheating or overcurrent leading to failure, the integrated thermal disconnection mechanism safely isolates the SPD from the power supply system and provides a clear status indication signal. The pluggable module design allows safe replacement while the base remains connected in Solar PV installations.\u003c\/p\u003e","brand":"CHK Power Quality","offers":[{"title":"1P Pole","offer_id":43634615582785,"sku":"1ATOWSP-1","price":55.0,"currency_code":"AUD","in_stock":true},{"title":"2P Pole","offer_id":43634616107073,"sku":"1ATOWSP-17","price":75.0,"currency_code":"AUD","in_stock":true},{"title":"3P Pole","offer_id":43634616631361,"sku":"1ATOWSP-33","price":100.0,"currency_code":"AUD","in_stock":true},{"title":"4P Pole","offer_id":43634617155649,"sku":"1ATOWSP-49","price":150.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6667\/7825\/files\/4P_SPd.jpg?v=1772536839"},{"product_id":"ac-surge-lighting-arrester-spd-60ka-protection-class-d","title":"AC Surge Arrester SPD 60KA - Protection class D","description":"\u003cp data-start=\"156\" data-end=\"386\"\u003eThe AC Surge Protection Device (SPD), also known as a surge suppressor or surge arrester, is designed to protect low voltage AC power systems from transient overvoltage caused by lightning strikes and switching surges.\u003c\/p\u003e\n\u003cp data-start=\"388\" data-end=\"617\"\u003eIt is suitable for TN-S, TN-C-S, TT and IT earthing systems operating at 50\/60Hz and below 380V AC. The device effectively diverts surge energy to earth, protecting sensitive electrical and solar PV equipment from damage.\u003c\/p\u003e\n\u003cp data-start=\"619\" data-end=\"948\"\u003eIn the event of overheating or overcurrent leading to failure, the integrated thermal disconnection mechanism safely isolates the SPD from the power supply system and provides a clear status indication signal. The pluggable module design allows safe replacement while the base remains connected in Solar PV installations.\u003c\/p\u003e","brand":"CHK Power Quality","offers":[{"title":"1P Pole","offer_id":43634679939137,"sku":"1ATOWSP-D20-1","price":55.0,"currency_code":"AUD","in_stock":true},{"title":"2P Pole","offer_id":43634679971905,"sku":"1ATOWSP-D20-2","price":75.0,"currency_code":"AUD","in_stock":true},{"title":"3P Pole","offer_id":43634680004673,"sku":"1ATOWSP-D20-3","price":100.0,"currency_code":"AUD","in_stock":true},{"title":"4P Pole","offer_id":43634680037441,"sku":"1ATOWSP-D20-4","price":150.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6667\/7825\/files\/image_4.png?v=1772536839"},{"product_id":"ac-surge-lighting-arrester-spd-60ka-protection-class-c","title":"AC Surge Arrester SPD 60KA - Protection class C","description":"\u003cp data-start=\"156\" data-end=\"386\"\u003eThe AC Surge Protection Device (SPD), also known as a surge suppressor or surge arrester, is designed to protect low voltage AC power systems from transient overvoltage caused by lightning strikes and switching surges.\u003c\/p\u003e\n\u003cp data-start=\"388\" data-end=\"617\"\u003eIt is suitable for TN-S, TN-C-S, TT and IT earthing systems operating at 50\/60Hz and below 380V AC. The device effectively diverts surge energy to earth, protecting sensitive electrical and solar PV equipment from damage.\u003c\/p\u003e\n\u003cp data-start=\"619\" data-end=\"948\"\u003eIn the event of overheating or overcurrent leading to failure, the integrated thermal disconnection mechanism safely isolates the SPD from the power supply system and provides a clear status indication signal. The pluggable module design allows safe replacement while the base remains connected in Solar PV installations.\u003c\/p\u003e","brand":"CHK Power Quality","offers":[{"title":"1P Pole","offer_id":43634685149249,"sku":"1ATOWSP-C40-1","price":55.0,"currency_code":"AUD","in_stock":true},{"title":"2P Pole","offer_id":43634685182017,"sku":"1ATOWSP-C40-2","price":75.0,"currency_code":"AUD","in_stock":true},{"title":"3P Pole","offer_id":43634685214785,"sku":"1ATOWSP-C40-3","price":100.0,"currency_code":"AUD","in_stock":true},{"title":"4P Pole","offer_id":43634685247553,"sku":"1ATOWSP-C40-4","price":150.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6667\/7825\/files\/image_3.png?v=1772536839"},{"product_id":"protection-device-surge-arrester-dc-spd-1000vdc","title":"Protection Device Surge Arrester DC SPD- 1000VDC","description":"\u003cp\u003eThe 1000V Solar Outdoor DC Surge Protection Device (DC SPD), also known as a surge arrester or surge suppressor, is designed to protect photovoltaic (PV) systems from lightning-induced surges and transient overvoltages. Suitable for various earthing systems including TN-S, TN-C-S, TT and IT, it provides reliable protection for solar DC circuits operating at up to 1000V.\u003c\/p\u003e","brand":"CHK Shop","offers":[{"title":"2P","offer_id":43634713231425,"sku":"1ATOWSP-DC-2P","price":55.0,"currency_code":"AUD","in_stock":true},{"title":"3P","offer_id":43634713264193,"sku":"1ATOWSP-DC-3P","price":65.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6667\/7825\/files\/image_5.png?v=1772536522"},{"product_id":"type-2-ac-surge-protection-device-trs4-series","title":"Type 2 AC surge protection device TRS4 series","description":"\u003cp data-start=\"243\" data-end=\"718\"\u003eThe TRS4 Series Type 2 AC Surge Protection Device is designed to safeguard electrical installations and sensitive equipment from transient over voltages caused by lightning strikes and switching events within the power network. Installed within distribution boards, this device helps prevent surge energy from propagating further into the electrical system, protecting downstream equipment and improving overall system reliability. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"720\" data-end=\"1128\"\u003eBuilt using high performance MOV technology, the TRS4 provides fast response and reliable surge diversion by safely directing excess surge current to ground. Under normal operating conditions the device remains inactive with high impedance, but when a surge occurs it instantly switches to a low impedance path to clamp the voltage and protect connected equipment. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1130\" data-end=\"1416\"\u003eThe TRS4 series is available in multiple discharge capacities (10kA, 20kA, 40kA and 60kA) and supports single phase or three phase power systems, making it suitable for a wide range of residential, commercial, and industrial applications. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1418\" data-end=\"1769\"\u003eIts compact DIN rail modular design with pluggable protection modules allows quick installation and simple maintenance. The device also includes a visual status indicator and optional remote signalling contact, enabling operators to monitor SPD health and respond quickly if replacement is required. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1771\" data-end=\"2028\"\u003eEngineered to meet IEC 61643-11 and EN 61643-11 standards, the TRS4 provides dependable surge protection for low voltage distribution systems such as electrical panels, industrial control cabinets, telecom installations, and building automation systems.\u003c\/p\u003e\n\u003cp data-start=\"1771\" data-end=\"2028\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"1771\" data-end=\"2028\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"1771\" data-end=\"2028\"\u003eThe one listed are of Uc: 275V, Imax: 40kA, In: 20kA\u003c\/p\u003e","brand":"CHK Shop","offers":[{"title":"1 Pole","offer_id":43657289793601,"sku":"TRS4-C40, 1P","price":15.0,"currency_code":"AUD","in_stock":true},{"title":"2 Pole","offer_id":43657289826369,"sku":"TRS4-C40, 2P","price":18.0,"currency_code":"AUD","in_stock":true},{"title":"3 Pole","offer_id":43657289859137,"sku":"TRS4-C40, 3P","price":24.0,"currency_code":"AUD","in_stock":true},{"title":"4 Pole","offer_id":43657289891905,"sku":"TRS4-C40, 4P","price":32.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6667\/7825\/files\/THOR_Type_2_AC.jpg?v=1773010045"},{"product_id":"type-2-ac-surge-protection-device-trs7-series","title":"Type 2 AC Surge Protection Device - TRS7 Series","description":"\u003cp data-start=\"196\" data-end=\"641\"\u003eThe TRS7 Series Type 2 AC Surge Protection Device is engineered to provide high capacity protection for low voltage electrical installations against transient over-voltages caused by lightning strikes and switching events. Installed within distribution boards, the device safely diverts surge energy to ground, preventing damaging voltage spikes from reaching sensitive equipment connected downstream. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"643\" data-end=\"1056\"\u003eUsing advanced MOV (Metal Oxide Varistor) technology, the TRS7 series remains inactive during normal operating conditions but responds instantly when a surge occurs. When excessive voltage is detected, the SPD rapidly switches to a low-impedance path, directing the surge current safely to earth and restoring the system to normal operation once the disturbance passes. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1058\" data-end=\"1449\"\u003eDesigned for demanding electrical environments, the TRS7 series offers very high surge discharge capacity, making it suitable for installations exposed to stronger transient disturbances. Models are available with maximum discharge ratings of 80kA, 100kA, 120kA, and up to 150kA, supporting both 1 phase and 3 phase power systems. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1451\" data-end=\"1844\"\u003eThe device features a compact DIN rail modular design with plug in protection modules, enabling fast installation and simplified maintenance. A visual status window clearly indicates the operational state of the SPD, while an optional remote alarm contact allows monitoring systems to detect device status or failure conditions in real time. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1846\" data-end=\"2066\"\u003eCompliant with IEC 61643-11 and EN 61643-11 standards, the TRS7 series delivers dependable surge protection for industrial facilities, commercial buildings, automation systems, and critical electrical infrastructure\u003c\/p\u003e\n\u003cp data-start=\"1846\" data-end=\"2066\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"1846\" data-end=\"2066\"\u003eThe variants kisted are of Uc:\u003c\/p\u003e\n\u003cp data-start=\"1846\" data-end=\"2066\"\u003e385V, Imax: 80kA, In: 40kA\u003c\/p\u003e\n\u003cp data-start=\"1846\" data-end=\"2066\"\u003eand\u003c\/p\u003e\n\u003cp data-start=\"1846\" data-end=\"2066\"\u003eUc: 385V, Imax: 120kA, In: 80kA\u003c\/p\u003e","brand":"CHK Shop","offers":[{"title":"TRS7-B80 4P","offer_id":43657322397761,"sku":"TRS7-B80, 4P-1","price":58.0,"currency_code":"AUD","in_stock":true},{"title":"TRS7-B120 4P","offer_id":43657322430529,"sku":"TRS7-B80, 4P-2","price":82.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6667\/7825\/files\/TRS7-B120-4P-4.jpg?v=1773010708"},{"product_id":"type-2-dc-photovoltaic-surge-protection-trs3-series-2p","title":"Type 2 DC photovoltaic surge protection TRS3 series","description":"\u003cp data-end=\"671\" data-start=\"244\"\u003eThe TRS3 Series 2 Pole Type 1+2 DC Photovoltaic Surge Protection Device is designed to protect solar PV installations from transient over voltages caused by lightning strikes and switching events within the electrical network. Installed on the DC side of a solar system, it prevents surge energy from reaching sensitive equipment such as inverters, monitoring devices, and PV arrays. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"1085\" data-start=\"673\"\u003ePhotovoltaic systems, especially large rooftop or utility scale installations, are highly exposed to lightning and electrical disturbances. Without proper protection, these surges can cause equipment failure, downtime, and costly repairs. The TRS3 series SPD helps minimise these risks by rapidly diverting surge currents safely to earth before they can damage the system. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"1463\" data-start=\"1087\"\u003eThe device uses high-performance MOV (Metal Oxide Varistor) technology that remains inactive during normal operation but reacts instantly when an over-voltage occurs. When a surge is detected, the SPD switches to a low impedance path, safely discharging the surge current and restoring normal conditions once the disturbance passes. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"1755\" data-start=\"1465\"\u003eDesigned specifically for DC photovoltaic systems, the TRS3 series supports multiple PV voltage levels including 500V, 600V, 800V, 1000V, 1200V and up to 1500V DC, making it suitable for modern solar installations and utility scale PV plants. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"2009\" data-start=\"1757\"\u003eIts compact plug in modular design allows for easy installation on a 35 mm DIN rail, while the visual fault indicator and optional remote signalling contact enable quick monitoring and maintenance if the protection module needs replacement.\u003c\/p\u003e\n\u003cp data-end=\"2009\" data-start=\"1757\"\u003eVariants listed are\u003c\/p\u003e\n\u003cp data-end=\"2009\" data-start=\"1757\"\u003eTRS3-C40 2P, Uocstc: 600V, Ucpv:720V , Imax: 40kA, In: 20kA and\u003c\/p\u003e\n\u003cp data-end=\"2009\" data-start=\"1757\"\u003eTRS3-C40 3P, Uocstc:1000V, Ucpv:1200V, Imax: 40kA, In: 20kA\u003c\/p\u003e\n\u003cp data-end=\"2009\" data-start=\"1757\"\u003e \u003c\/p\u003e","brand":"CHK Shop","offers":[{"title":"2 Pole","offer_id":43657340551233,"sku":null,"price":21.0,"currency_code":"AUD","in_stock":true},{"title":"3 Pole","offer_id":43657340584001,"sku":null,"price":26.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6667\/7825\/files\/type-1-2-dc-photovoltaic-spd-2p.jpg?v=1773011226"},{"product_id":"hla50-255-type-1-spd","title":"HLA50-255 Type 1 SPD","description":"\u003cp data-start=\"0\" data-end=\"462\"\u003eThe HLA50-255 from \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eHakel\u003c\/span\u003e\u003c\/span\u003e is a Type 1 surge protection device designed to manage high energy transients, particularly those associated with lightning strikes entering a low voltage installation. It is typically installed at the main switchboard or service entry point, where it acts as the first level of protection by diverting surge energy safely to earth before it can propagate into the internal electrical network.\u003c\/p\u003e\n\u003cp data-start=\"464\" data-end=\"902\"\u003eIn practical applications, this device is used in environments where there is a higher risk of lightning exposure or major switching disturbances. This includes industrial facilities, utilities, data centres, hospitals, and sites equipped with external lightning protection systems. It is particularly relevant at the transition between external and internal zones (LPZ 0 to LPZ 1), where the bulk of surge energy needs to be intercepted.\u003c\/p\u003e\n\u003cp data-start=\"904\" data-end=\"1441\"\u003eTechnically, the HLA50-255 operates using spark gap technology, which differs from the MOV-based approach used in Type 2 devices. Under normal operating conditions, the device remains inactive with negligible leakage. During a surge event, it creates a controlled discharge path, allowing high impulse currents (10\/350 µs waveform) to be safely conducted to earth. Once the surge has passed, the arc extinguishes automatically, and the device returns to its standby state without degradation typically associated with MOV components.\u003c\/p\u003e\n\u003cp data-start=\"1443\" data-end=\"1819\"\u003eFrom a system design perspective, the HLA50-255 forms part of a coordinated surge protection scheme. It is intended to handle the initial high energy surge, after which downstream Type 2 and Type 3 SPDs further limit residual voltages to levels suitable for sensitive equipment. This layered approach ensures both robustness and longevity of the overall protection system.\u003c\/p\u003e\n\u003cp data-start=\"1821\" data-end=\"2238\"\u003eFor effective performance, installation practices are critical. The device should be connected with short and low-impedance conductors, and the earthing system must be properly designed to ensure efficient discharge of surge energy. Consideration should also be given to upstream protection coordination and, where required, remote signalling variants can be used for integration into monitoring or SCADA systems.\u003c\/p\u003e\n\u003cp data-start=\"2240\" data-end=\"2478\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eIn essence, the HLA50-255 is used where the objective is to absorb and safely dissipate the highest levels of surge energy at the entry point, ensuring that downstream systems and equipment remain protected from damaging overvoltages.\u003c\/p\u003e","brand":"CHK Shop","offers":[{"title":"Default Title","offer_id":43782447628353,"sku":null,"price":240.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6667\/7825\/files\/HLA50-255.jpg?v=1776511026"},{"product_id":"hla50-255-led-type-1-spd","title":"HLA50-255 LED Type 1 SPD","description":"\u003cp data-start=\"0\" data-end=\"475\"\u003eThe HLA50-255 LED from \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eHakel\u003c\/span\u003e\u003c\/span\u003e is a Type 1 surge protection device designed to manage high energy lightning currents at the point of entry of a low voltage installation, with the added advantage of visual status indication via an integrated LED. It is typically installed at the main switchboard, where it serves as the primary protection layer by diverting surge energy safely to earth before it can affect downstream equipment.\u003c\/p\u003e\n\u003cp data-start=\"477\" data-end=\"970\"\u003eIn practical applications, the device is used in installations where both high surge protection capability and quick visual status checking are important. This includes industrial sites, commercial buildings, data centres, and utility connected systems where maintenance teams need immediate confirmation of SPD health without additional testing equipment. It is particularly effective at the LPZ 0 to LPZ 1 boundary, intercepting high energy surges entering from the external network.\u003c\/p\u003e\n\u003cp data-start=\"972\" data-end=\"1550\"\u003eTechnically, the HLA50-255 LED utilises spark gap technology, enabling it to handle large impulse currents associated with lightning (10\/350 µs waveform). Under normal conditions, the device remains inactive with negligible leakage current. During a surge event, it creates a controlled discharge path to earth, safely dissipating the energy. Once the event passes, the device resets automatically. The addition of the LED provides a clear visual indication of operational status, allowing field personnel to quickly identify whether the device is functioning correctly.\u003c\/p\u003e\n\u003cp data-start=\"1552\" data-end=\"1918\"\u003eFrom a system design perspective, the HLA50-255 LED is used as part of a coordinated surge protection scheme, forming the first stage of protection. It absorbs the bulk of surge energy, allowing downstream Type 2 and Type 3 SPDs to handle residual voltages. This coordination ensures improved protection performance and longer service life of downstream devices.\u003c\/p\u003e\n\u003cp data-start=\"1920\" data-end=\"2226\"\u003eProper installation remains critical for performance. The SPD should be installed with short connection leads and low impedance earthing, ensuring efficient surge discharge. The LED indication also assists during commissioning and maintenance, reducing inspection time and improving system reliability.\u003c\/p\u003e","brand":"CHK Shop","offers":[{"title":"Default Title","offer_id":43782452543553,"sku":null,"price":270.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6667\/7825\/files\/image_3.jpg?v=1776511436"},{"product_id":"hla50-255-2-0-type-1-spd","title":"HLA50-255\/2+0 Type 1 SPD","description":"\u003cp data-start=\"0\" data-end=\"493\"\u003eThe HLA50-255\/2+0 from \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eHakel\u003c\/span\u003e\u003c\/span\u003e is a Type 1 surge protection device configured for single phase systems (L–N) with a 2+0 protection arrangement, designed to handle high energy lightning currents at the service entry point of a low voltage installation. It is typically installed at the main distribution board, where it provides primary protection by diverting incoming surge energy safely to earth before it can propagate into downstream circuits.\u003c\/p\u003e\n\u003cp data-start=\"495\" data-end=\"994\"\u003eIn practical applications, this configuration is commonly used in single phase installations or sub-distribution boards, including commercial buildings, telecom sites, small industrial systems, and critical loads where incoming feeders are exposed to lightning or switching transients. The 2+0 configuration ensures effective protection between line and neutral, making it suitable for installations where neutral is solidly earthed and coordinated protection is required at the entry level.\u003c\/p\u003e\n\u003cp data-start=\"996\" data-end=\"1551\"\u003eTechnically, the HLA50-255\/2+0 utilises spark gap technology, enabling it to withstand and discharge high impulse currents associated with lightning events (10\/350 µs waveform). Under normal operating conditions, the device remains inactive with negligible leakage current. During a surge event, it provides a controlled discharge path, safely diverting energy to earth. Once the surge subsides, the device resets automatically without the ageing effects typically seen in MOV based devices, ensuring long term reliability in high energy environments.\u003c\/p\u003e\n\u003cp data-start=\"1553\" data-end=\"1939\"\u003eFrom a system design perspective, the HLA50-255\/2+0 forms the first stage of a coordinated surge protection scheme. It absorbs the bulk of the surge energy, allowing downstream Type 2 and Type 3 SPDs to further clamp residual voltages to levels suitable for sensitive equipment. This staged approach ensures both effective protection and extended service life of downstream devices.\u003c\/p\u003e\n\u003cp data-start=\"1941\" data-end=\"2293\"\u003eProper installation is essential for optimal performance. The device should be connected using short, low impedance conductors, and the earthing system must be designed to efficiently dissipate surge energy. Attention should also be given to upstream protection coordination and system earthing configuration to ensure correct operation of the SPD.\u003c\/p\u003e","brand":"CHK Shop","offers":[{"title":"Default Title","offer_id":43782458310721,"sku":"HLA50-255\/2+0","price":300.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6667\/7825\/files\/image_7.jpg?v=1776512851"}],"url":"https:\/\/www.chkshop.com.au\/collections\/surge-protection.oembed","provider":"CHK Shop","version":"1.0","type":"link"}