521.027 fine fuse — Medium inertia (M), Rated current 10 A, Nominal voltage 250 V AC Key benefits Reliable overcurrent protection at 10 A and up to 250 V AC for a wide range of AC circuits. Medium inertia (M) characteristic tolerates brief inrush or start-up currents while still interrupting sustained overloads, reducing unnecessary fuse blows. Fine fuse form factor provides a compact protective element suitable for installations that require a precise replacement fuse with the 521.027 specification. What it does Protects wiring and equipment by interrupting current when a fault causes the current to exceed the rated limit. Balances transient tolerance and overload protection through its medium inertia behavior. Important specifications (as supplied) Model: 521.027 fine fuse Inertia/characteristic: Medium inertia (M) Rated current: 10 A Nominal voltage: 250 V AC Compatibility and installation notes Use as a direct replacement where a 521.027 fine fuse or an equivalent medium-inertia 10 A / 250 V AC fuse is specified. Verify fuse holder size and mounting style before replacement; ensure the installation conforms to local electrical codes and safety practices. Typical applications / use scenarios Protecting household or light commercial AC appliances and equipment operating on 230–250 V AC that experience moderate startup currents. Safeguarding motor-control circuits and small motors where brief inrush occurs but sustained overloads must be interrupted. Protecting power supplies, control panels, or electronic devices that require a compact, medium-inertia 10 A protective fuse. Buying considerations Confirm the exact 521.027 specification and M characteristic match your equipment requirements. Replace only with the same rated current (10 A) and nominal voltage (250 V AC) to maintain intended protection performance.