{"product_id":"mercury-5-x-20mm-f1-6a-quick-blow-fuse-250v-fast-acting","title":"Mercury 5 x 20mm F1.6A Quick Blow Fuse - 250V Fast-Acting","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe Mercury F1.6A is a 5 x 20mm glass cartridge fuse rated at 1.6 amps and 250 volts, designed as a fast-acting (quick blow) overcurrent protection device. When current exceeds the 1.6A threshold, the internal wire element melts within milliseconds to break the circuit and protect downstream components from damage caused by overload or short circuit faults.\u003c\/p\u003e\n\u003cp\u003eUsed in audio equipment, small power supplies, control panels, instrumentation and consumer electronics where low-current circuits require rapid fault protection, the fuse fits standard 5 x 20mm panel-mount and PCB-mount fuseholders. The glass body allows visual inspection of the element — a broken or discoloured wire indicates the fuse has blown and needs replacement.\u003c\/p\u003e\n\u003cp\u003eThe 250V voltage rating makes this fuse suitable for UK mains-fed equipment operating on 230V supply, provided the current draw remains below 1.6A. The nickel-plated brass end caps provide reliable contact with fuseholder terminals and resist corrosion in typical installation environments. IEC compliance ensures the fuse meets international safety standards for construction and performance.\u003c\/p\u003e\n\u003ch5\u003eFrequently Asked\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does 'quick blow' mean?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eQuick blow (also called fast-acting or F-type) means the fuse responds immediately when current exceeds its rating. This contrasts with time-delay (T-type) fuses, which tolerate brief current surges before blowing. Quick blow fuses protect sensitive electronics that cannot withstand even short overcurrent events.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this fuse be used in mains voltage equipment?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the 250V rating covers UK mains voltage of 230V. However, the 1.6A rating limits this fuse to equipment drawing no more than approximately 368W at 230V (P = V × I). Higher-power equipment requires a higher-rated fuse.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I know if the fuse has blown?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe glass body allows you to inspect the internal wire element. If the wire is broken or shows discolouration and burn marks, the fuse has blown and must be replaced with an identical 1.6A 5 x 20mm quick blow type.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat equipment typically uses 1.6A fuses?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAudio amplifiers (particularly low-power valve\/tube amps), small bench power supplies, instrumentation, control circuits, and consumer electronics with low current draw commonly use 1.6A fuses for circuit protection.\u003c\/p\u003e","brand":"AVSL","offers":[{"title":"Default Title","offer_id":45313488683275,"sku":"787.262UK","price":1.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/787262UK_LB1_a9fb2c57-8542-45f2-8076-845ab1648176.jpg?v=1715194259","url":"https:\/\/niori.co.uk\/products\/mercury-5-x-20mm-f1-6a-quick-blow-fuse-250v-fast-acting","provider":"Niori","version":"1.0","type":"link"}