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Four ceramic plug fuses with indicating time-delay element

Bussmann

Bussmann T-20 Plug Fuse 20A 125V 10kA 4 PK

SKU CH-7HAV-2CNMJ

Pack of four 20 A ceramic plug fuses with 10 kA interrupt rating at 125 V AC

  • Time-delay operation prevents nuisance trips
  • 10 kA interrupt rating handles high fault currents
  • 20 A at 125 V AC fits standard plug-fuse panels
  • Ceramic body with dual-element construction
  • Pack of 4 fuses for multiple circuits

What this fuse protects

The Bussmann T-20 is a 20A time-delay plug fuse rated for 125V AC circuits with a 10kA interrupt rating. It suits residential and light-commercial panels that use Edison-base fuse holders. The dual-element ceramic body handles temporary motor-start surges without nuisance opening. The indicating window shows at a glance whether the element has blown.

Capacity and headroom

Each fuse carries a continuous 20A load and will clear a 10kA short circuit at 125V AC. The time-delay characteristic gives headroom for brief inrush currents typical of small compressors or pumps. It runs out when sustained current exceeds 20A or when the available fault current surpasses the 10kA rating. Four fuses come in the pack for multi-circuit spares.

The deciding specification

The critical figure is the 10kA interrupt rating at 125V AC. If the panel’s available fault current is higher, this fuse cannot safely clear the fault and a higher-rated device is required. The non-rejection Edison base fits standard sockets but offers no rejection feature against over-fusing. Verify the panel’s fault-current level before specifying this part.

Highlights

  • Time-delay operation prevents nuisance trips
  • 10 kA interrupt rating handles high fault currents
  • 20 A at 125 V AC fits standard plug-fuse panels
  • Ceramic body with dual-element construction
  • Pack of 4 fuses for multiple circuits

Specifications

BrandEATON BUSSMANN

Questions about this item

Will the 20 A time-delay characteristic protect my older 125 V motor circuits without nuisance blows?

The dual-element design provides a time-delay that rides through brief motor-start surges while still interrupting at 10 kA if a genuine fault occurs.

How can I confirm the fuse has operated after a fault event?

The indicating window shows a visible colour change once the element has melted, so you can see at a glance which fuse needs replacement.

Does the four-pack include any fuse adapters or bases, or must they be purchased separately?

Only the four plug-style fuses are supplied; Edison-base adapters or fuse blocks are sold separately.

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