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Four ceramic plug fuses with indicating windows in a pack

Bussmann

Bussmann S-3-2/10 Plug Fuse 3.20 A 125 V AC 10 kA 4 PK

SKU CH-M3QD-GXRYK

Time-delay plug fuse rated 3.20 A at 125 V AC with 10 kA interrupt capacity, ceramic body, pack of four

  • Time-delay operation prevents nuisance trips from motor inrush
  • 10 kA interrupt rating at 125 V AC handles high fault currents
  • Dual-element construction protects against overloads and short circuits
  • Indicating design shows blown status at a glance
  • UL 248-11 and CSA 1423-01 listed for code compliance

EATON BUSSMANN S Series Plug Fuse

This four-pack supplies 3.20 A, 125 V AC plug fuses for residential and light-commercial circuits. Each unit uses a ceramic body with dual-element, time-delay construction to handle temporary inrush without nuisance opening. The rejection-style base prevents insertion into non-rejection fuseholders. They suit homeowners and electricians protecting lighting and appliance branch circuits.

Thermal behaviour and interrupt capacity

The fuses carry an interrupt rating of 10 kA at 125 V AC, clearing fault currents quickly to limit thermal stress on downstream wiring. Time-delay action reduces heat buildup during motor start-up or transformer energising. Ceramic bodies dissipate heat effectively under normal load. No active cooling or fan noise is involved in their operation.

Installation requirements and circuit impact

Rejection bases require compatible Type S fuseholders, so existing Edison-base panels need adapter sleeves or holder replacement. Once fitted, the fuses free up panel space by eliminating the need for separate supplemental protectors on each branch. UL 248-11 listing and CSA Class 1423-01 certification confirm code compliance for standard 125 V AC distribution systems.

How it compares

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

Price $37.99
Cheaper than about 65% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameEATON BUSSMANN

Questions about this item

How do I install the Bussmann S-3-2/10 plug fuse into a fuse panel?

Screw the ceramic body into the matching Edison-base socket until the rejection threads engage fully; the time-delay element must seat squarely so the indicator window faces outward for visual checks.

What maintenance or replacement will the S-3-2/10 fuse need after it operates?

The fuse is single-use; once the dual-element link melts during an overcurrent event, discard the unit and replace it with a new S-series plug fuse of the same 3.20 A, 125 V AC rating.

What is the first limit reached when the S-3-2/10 fuse carries sustained overload current?

The 10 kA interrupting rating at 125 V AC is the hard ceiling; if available fault current exceeds that value the fuse cannot safely clear the circuit.

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