Description
Mercury 6 x 32mm F2A quick blow fuses are glass cartridge fuses rated at 2A and 250V, designed to blow immediately when current exceeds the rated threshold. The quick blow (also called fast-acting) characteristic means the fuse responds within milliseconds to an overcurrent event, providing protection for sensitive electronic components, control circuits, and low-power equipment where slower-acting fuses would allow damaging current spikes to persist.
These fuses suit equipment with minimal inrush current on power-up, such as audio equipment, lighting controllers, signal circuits, and instrumentation. The 6 x 32mm form factor is a standard size used across a wide range of electronic devices and control panels, fitting inline fuseholders, PCB-mount clips, and panel-mount holders designed for this dimension. The 250V rating covers both 230V AC mains-derived circuits and lower-voltage DC applications.
The glass body allows visual inspection of the internal fuse wire to confirm whether the fuse has blown without needing to test it with a multimeter. Nickel-plated end caps provide good contact conductivity and resist corrosion in typical indoor installation environments. IEC compliance confirms the fuse meets international standards for dimensions, breaking capacity, and performance characteristics, ensuring compatibility with equipment designed to IEC fuse specifications.
Frequently Asked
What is the difference between quick blow and slow blow fuses?
Quick blow fuses (also called fast-acting or F-rated) respond within milliseconds to overcurrent, protecting sensitive circuits. Slow blow fuses (time-delay or T-rated) tolerate brief overcurrent spikes on power-up, making them suitable for motors and transformers with high inrush current. Use quick blow where the equipment has low or no inrush and requires fast protection.
Are these suitable for mains voltage circuits?
Yes. The 250V rating covers standard UK 230V AC mains-derived circuits as well as lower-voltage DC applications. The 2A rating suits low-power equipment — check the equipment's current draw to confirm a 2A fuse is appropriate.
Can I use these in a 13A plug fuse holder?
No. UK 13A plugs use 20mm cylindrical fuses (BS 1362 standard), not 6 x 32mm cartridge fuses. These 6x32mm fuses are for inline holders, PCB mounts, or equipment fuseholders that specify this size.
How can I tell if the fuse has blown?
The glass body allows you to inspect the internal wire visually. If the wire is intact and continuous between the two end caps, the fuse is good. If the wire is broken or the glass is blackened from arcing, the fuse has blown and needs replacing.