Bussmann
Bussmann MDL 1/2A 250V Time Delay Glass Fuse 5PK
Five-pack of 0.5 A, 250 V AC time-delay glass fuses with a 10 kA interrupt rating at 125 V and 35 A at 250 V
- Protects circuits with 0.5 A time-delay response
- Handles 250 V AC for mains-rated equipment
- Interrupts 35 A at 250 V AC for safe fault clearing
- Interrupts 10 kA at 125 V AC for high-fault protection
- Directly replaces Littelfuse 313, 315 and Mersen GDL, GDV series
Fuse for low-current circuits
This 0.5 A time-delay glass fuse protects equipment that draws small currents but experiences brief inrush surges. The MDL series suits control boards, instrumentation and similar 250 V AC loads where a fast-acting link would nuisance-blow. Each pack supplies five identical replacements for maintenance or spares.
Thermal and electrical behaviour
The cylindrical glass body carries a 10 kA interrupt rating at 125 V AC and 35 A at 250 V AC, so fault current is safely contained within the rated voltage. Time-delay action absorbs transient peaks without opening, keeping downtime low during normal start-up cycles. Power dissipation in routine use remains minimal for the 0.5 A rating.
Glass construction and mounting implications
The 1-1/4 in by 1/4 in glass tube fits standard fuse clips and panel holders designed for this form factor. Non-rejection styling means it seats in any compatible clip without keying, simplifying field swaps. Cross-reference numbers 313, 315, GDL, GDV, MDL, MDQ, MDV and MDX confirm broad interchangeability across brands.
Highlights
- Protects circuits with 0.5 A time-delay response
- Handles 250 V AC for mains-rated equipment
- Interrupts 35 A at 250 V AC for safe fault clearing
- Interrupts 10 kA at 125 V AC for high-fault protection
- Directly replaces Littelfuse 313, 315 and Mersen GDL, GDV series
Specifications
| Brand | BUSSMANN |
|---|
Questions about this item
How do I install the Bussmann MDL 1/2A 250V glass fuse and what step is often missed?
Push the cylindrical glass body into a 1/4 in diameter clip until the metal end caps seat fully; the step often missed is verifying the holder is rated for 250 V AC and 10 kA at 125 V AC interrupting capacity.
What maintenance or replacement will the MDL series fuse need later?
A time-delay glass fuse is a single-use device; after it interrupts a fault at 35 A (250 V AC) or 10 kA (125 V AC) it must be replaced with another 0.5 A MDL or equivalent 313, 315, GDL, GDV, MDQ, MDV, MDX series fuse.
What limit appears first under sustained load on this 0.5 A fuse?
The 0.5 A continuous current rating is the first limit; sustained current above 0.5 A will cause the element to melt, while the time-delay characteristic only tolerates brief inrush peaks.
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