{"product_id":"mercury-6-x-32mm-t12a-slow-blow-fuses-250v","title":"Mercury 6 x 32mm T12A Slow Blow Fuses - 250V","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe Mercury T12A is a 6 x 32mm slow blow fuse rated at 12 amps and 250 volts, designed to tolerate short-term power surges without breaking the circuit. The slow blow characteristic delays the fuse response during momentary overloads, making it suitable for motors, transformers, power supplies and other inductive loads that draw higher current during startup than during normal running.\u003c\/p\u003e\n\u003cp\u003eThese fuses are commonly used in audio equipment, PA systems, broadcast installations and industrial control panels where equipment startup generates a brief inrush current that would trip a fast-acting fuse. The 6 x 32mm glass cartridge format fits standard fuse holders in mains plugs, equipment chassis panels and distribution boards across the UK and Europe. IEC certification confirms the fuse meets international safety standards for rated breaking capacity.\u003c\/p\u003e\n\u003cp\u003eThe transparent glass body allows visual inspection of the fuse element without removal from the holder. Once a fuse has blown, the internal wire will appear broken or discoloured. The nickel-plated brass end caps ensure good contact in the fuse holder and resist corrosion in damp environments. Each fuse is stamped with the T12A rating on the end cap for identification during replacement.\u003c\/p\u003e\n\u003ch5\u003eFrequently Asked\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does slow blow mean?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSlow blow fuses tolerate brief current surges above the rated amperage without blowing, giving inductive loads time to complete their startup cycle. A fast-acting fuse of the same rating would blow during the same surge. This makes slow blow fuses necessary for motors, transformers and similar equipment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere is this fuse typically used?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 6 x 32mm T12A is a standard size in audio equipment, PA amplifiers, powered speakers, broadcast gear and industrial control panels. It fits the same holders as F-rated (fast-acting) fuses of the same physical size, so replacement requires matching both the amperage and the time delay characteristic.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this replace a fast-acting 12A fuse?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePhysically it will fit, but substituting a slow blow for a fast-acting fuse removes an important safety margin. Fast-acting fuses are specified where immediate circuit breaking is required. Only replace with a slow blow fuse if the equipment manufacturer specifies a T-rated or time-delay fuse in that position.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I know when the fuse has blown?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe internal wire element will appear broken or heavily discoloured when viewed through the glass body. If the element looks intact and silver-grey, the fuse is likely still functional. A multimeter set to continuity mode will confirm whether the fuse is open or closed circuit.\u003c\/p\u003e","brand":"AVSL","offers":[{"title":"Default Title","offer_id":45313487995147,"sku":"787.148UK","price":1.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/787148UK_LB1_8b08807d-cef2-4612-901f-54a8723df68d.jpg?v=1715194217","url":"https:\/\/niori.co.uk\/products\/mercury-6-x-32mm-t12a-slow-blow-fuses-250v","provider":"Niori","version":"1.0","type":"link"}