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Five glass cylindrical fuses with metal end caps

Bussmann

Bussmann MDQ-12 Glass Fuse 12A 32V AC 5 PK

SKU CH-T3B7-TFX1R

Pack of five 12 A glass fuses rated for 32 V AC with 1 kA interrupting capacity

  • Time-delay glass fuse handles temporary surges without nuisance blows
  • 12 A at 32 V AC suits low-voltage automotive circuits
  • 1 kA interrupt rating clears faults safely
  • Standard 1-1/4 in by 1/4 in size fits common holders
  • Pack of five provides ready spares for maintenance

Product identity

The Bussmann MDQ-12 is a 12A, 32V AC glass fuse designed for circuit protection in low-voltage equipment. Supplied as a five-pack, it suits technicians and hobbyists who need replacement fuses for control panels, instrumentation or similar applications. The time-delay characteristic helps absorb brief inrush currents without nuisance opening.

Build integration

Each fuse has a cylindrical glass body measuring 1-1/4 in long by 1/4 in diameter, fitting standard holders for that form factor. The non-rejection design allows direct insertion into compatible clips without a keyed base. An interrupt rating of 1kA at 32V AC provides adequate fault clearance for the intended voltage class. Equivalent series include MDL, MDV, MDX, 313, 315, GDL and GDV for cross-reference purposes.

Sustained-load behaviour

Under continuous load the time-delay element tolerates temporary overloads while still opening on sustained overcurrent. The glass tube lets users visually confirm the fuse status after a fault event. Rated for 32V AC, the device is not suited for higher-voltage mains circuits or DC applications beyond its rating. Buyers needing higher interrupt capacity or different voltage ratings should select an alternative series.

How it compares

Measured against everything we stock in Breakers & Circuit Protection, at today’s prices. Recalculated every night.

Price $26.99
Cheaper than about 73% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameEATON BUSSMANN

Questions about this item

At what current does the 1kA at 32V AC interrupt rating become the limiting factor?

The fuse is rated to interrupt up to 1kA at 32V AC; sustained loads above 12A will cause it to open before that limit is reached.

How much heat does a 12A 32V AC glass fuse generate during continuous operation?

A 12A glass fuse at 32V AC dissipates only a few watts, so it runs warm but not hot enough to require active cooling.

What holder or block is needed to install these 1-1/4 in by 1/4 in cylindrical fuses?

They fit standard 1-1/4 in x 1/4 in fuse clips, panels or in-line holders designed for MDQ, MDL, 313 or 315 series fuses.

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