Bussmann
Bussmann 7 A 250 V AC time-delay glass fuse MDL series
7 A time-delay glass fuse rated 250 V AC with 10 kA interrupt at 125 V AC and 200 A at 250 V AC
- Time-delay action protects circuits during brief surges
- 7 A rating at 250 V AC suits many low-voltage applications
- Glass body allows quick visual inspection of element status
- 10 kA interrupt rating at 125 V AC handles high fault currents
- Cross-references Littelfuse 313 and 315 series for easy replacement
What this fuse is and who needs it
This is a 7 A 250 V AC time-delay glass fuse from the Bussmann MDL series. It suits maintenance technicians and repair shops replacing a blown cartridge in equipment that requires a standard 1-1/4 inch by 1/4 inch cylindrical body. The non-rejection design fits common fuse holders without a keyed slot.
Behaviour under sustained load
The time-delay characteristic allows the element to tolerate brief inrush currents without opening, while still clearing sustained overloads. Interrupt ratings are 10 kA at 125 V AC and 200 A at 250 V AC, so the fuse can safely break fault current at those levels. Glass construction lets you inspect the element visually after an event.
The spec that decides fit
The critical match is the 7 A current rating combined with the 250 V AC voltage rating and the 1-1/4 in by 1/4 in physical size. If your equipment calls for a different amperage, voltage or cartridge dimensions, this fuse will not provide the correct protection. Equivalent series include 313, 315, GDL, GDV, MDQ, MDV and MDX.
Highlights
- Time-delay action protects circuits during brief surges
- 7 A rating at 250 V AC suits many low-voltage applications
- Glass body allows quick visual inspection of element status
- 10 kA interrupt rating at 125 V AC handles high fault currents
- Cross-references Littelfuse 313 and 315 series for easy replacement
Specifications
| Brand | BUSSMANN |
|---|
Questions about this item
Does the glass body or time-delay element generate noticeable heat during continuous 7 A operation?
The fuse is rated for 7 A at 250 V AC; normal operation at rated current produces minimal temperature rise inside the glass tube.
What holder or clip must I already have to mount this 1-1/4 in by 1/4 in cylindrical fuse?
You need a standard 1/4 in diameter by 1-1/4 in length fuse holder or panel-mount clip designed for cylindrical glass fuses.
Can this MDL fuse replace a Littelfuse 313 or Mersen GDL in the same circuit without changing the interrupt rating?
Yes, the MDL series is listed as equivalent to Littelfuse 313, 315 and Mersen GDL, GDV with the same 10 kA at 125 V AC and 200 A at 250 V AC interrupt ratings.
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