{"product_id":"puresilk-t4-0amp-anti-surge-fuse","title":"Puresilk T4.0A Anti-Surge Ceramic Fuse | PS20LS PS25 PS30LS PS35 Hayward HWPS25 HWPS35","description":"\u003cp\u003e\u003cstrong\u003eQuick answer:\u003c\/strong\u003e This T4.0A anti-surge ceramic fuse is the main board fuse for Puresilk and Hayward salt chlorinators. If your chlorinator has no output or has tripped and won't reset, a blown main fuse is a common cause. This is a direct replacement for the models listed below.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Models\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePuresilk PS20LS\u003c\/li\u003e\n\u003cli\u003ePuresilk PS25\u003c\/li\u003e\n\u003cli\u003ePuresilk PS30LS\u003c\/li\u003e\n\u003cli\u003ePuresilk PS35\u003c\/li\u003e\n\u003cli\u003eHayward HWPS25\u003c\/li\u003e\n\u003cli\u003eHayward HWPS35\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eT4.0A anti-surge (slow-blow) ceramic fuse\u003c\/strong\u003e — main board fuse for compatible Puresilk and Hayward chlorinators\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCeramic body\u003c\/strong\u003e — handles higher inrush currents than glass fuses, suited to motor and transformer loads\u003c\/li\u003e\n\u003cli\u003eDirect replacement — restores chlorinator operation when the main fuse has blown\u003c\/li\u003e\n\u003cli\u003eEasy DIY replacement with basic electrical knowledge\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRating:\u003c\/strong\u003e T4.0A (4 amp, anti-surge \/ slow-blow)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Ceramic body with silver end caps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Main board fuse\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003csection itemscope itemtype=\"https:\/\/schema.org\/FAQPage\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n\u003ch3 itemprop=\"name\"\u003eHow do I know if my chlorinator fuse has blown?\u003c\/h3\u003e\n\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n\u003cp itemprop=\"text\"\u003eCommon signs of a blown main fuse include the chlorinator showing no display, no output, or failing to power on at all despite the power supply being connected. To confirm, open the chlorinator control box (with power off) and visually inspect the fuse, or test it with a multimeter set to continuity mode. If there is no continuity, the fuse has blown and needs replacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n\u003ch3 itemprop=\"name\"\u003eWhat does T4.0A anti-surge mean?\u003c\/h3\u003e\n\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n\u003cp itemprop=\"text\"\u003eT4.0A means the fuse is rated at 4 amps and is a time-delay (anti-surge or slow-blow) type. Anti-surge fuses tolerate brief current spikes — such as the inrush current when a chlorinator powers on — without blowing, while still protecting against sustained overcurrent faults. Always replace with the same rating and type.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n\u003ch3 itemprop=\"name\"\u003eIf my fuse keeps blowing, is the fuse the problem?\u003c\/h3\u003e\n\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n\u003cp itemprop=\"text\"\u003eA fuse that blows repeatedly usually indicates an underlying fault in the chlorinator — such as a short circuit on the main board, a faulty cell, or a wiring issue — rather than a faulty fuse. If replacing the fuse does not resolve the issue or the new fuse blows again, contact us on 02 9137 8914 for further diagnosis before replacing additional components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/section\u003e","brand":"Pool Shop Australia","offers":[{"title":"Default Title","offer_id":54558514905363,"sku":"22562","price":24.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/0591\/1827\/files\/Screenshot2026-08-11102814.png?v=1786408112","url":"https:\/\/poolshop.com.au\/products\/puresilk-t4-0amp-anti-surge-fuse","provider":"Pool Shop Australia","version":"1.0","type":"link"}