Onka Fast Acting 5x20mm Glass Fuse (F)
Quality glass fuses from Onka. Suitable for use in DIN rail fuse holders and protective circuits for low voltage. Commonly found in electrical control panels for distribution of 24V AC or DC. Also suitable for general purpose applications including circuit boards and appliances.
Glass body fuses are easy to check visually for signs of rupture. They provide protection from short circuits and overcurrent.
250V rated, we stock large quantities of the common sizes below:
200mA, 500mA, 1A, 2A, 3A, 5A, 6A
Frequently Asked Questions
What sizes are available?
200mA, 500mA, 1A, 2A, 3A, 5A and 6A — all rated 250V.
What fuse type is this?
Fast-acting (F) glass body, 5x20mm — fits standard DIN rail fuse holders, including our OPK 2.5mm² fused terminal block (2482) and the MRK-S 6mm² fused terminal block (1322).
Can I visually check if it's blown?
Yes — the glass body lets you see signs of rupture without removing it from the holder.
What's this commonly used for?
24V AC/DC control panel circuits, plus general-purpose circuit board and appliance protection.
Industry Applications
- Control panel building — circuit protection for 24V AC/DC distribution
- OEM machine builders — general-purpose overcurrent protection
- Maintenance & fault-finding — visual inspection speeds up fault diagnosis