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Four ceramic plug fuses with indicating windows in a pack

Bussmann

Bussmann S-30 Plug Fuse 30A 125V 10kA 4 PK

SKU CH-4WYM-1KXAS

Four ceramic time-delay plug fuses rated 30 A, 125 V AC with 10 kA interrupt capacity

  • Time-delay operation prevents nuisance trips
  • Dual-element construction handles motor-start surges
  • 10 kA interrupt rating at 125 V AC
  • Rejection base stops incorrect fuse installation
  • Ceramic body meets UL 248-11 and CSA Class 1423-01

30 A Plug Fuse for 125 V AC Circuits

This Bussmann S-series plug fuse provides 30 A time-delay protection for 125 V AC circuits. The ceramic-bodied, dual-element design includes a rejection feature that prevents incorrect installation. It is suited for residential and light-commercial panels that require indicating fuses. The pack contains four fuses for multi-circuit or spare inventory needs.

Sustained Overload Behaviour and Interrupt Capacity

The dual-element construction tolerates temporary inrush currents without nuisance opening while clearing sustained overloads. An interrupt rating of 10 kA at 125 V AC ensures the fuse can safely break high fault currents. The time-delay characteristic reduces downtime on circuits with motor loads or transformer inrush. The indicating window gives visual confirmation when the element has opened.

Compatibility Limits of the Edison-Base Standard

The rejection base fits only matching Edison-base fuseholders that accept the S-series profile, preventing use of lower-rated fuses. It complies with UL 248-11, CSA Class 1423-01 and CE requirements for plug-type fuses. Circuits exceeding 125 V AC or requiring a higher interrupt rating fall outside this fuse's certified application. The four-pack quantity suits panels with multiple protected branches.

How it compares

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Price $17.99
Cheaper than about 82% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameEATON BUSSMANN

Questions about this item

How much heat does the S-30 plug fuse generate when running at 30 A all day?

The ceramic-bodied, dual-element S-30 plug fuse operates at 125 V AC with a 10 kA interrupt rating; normal load produces only minimal warmth inside a standard fuse block.

What fuse block or panel must I already own to install these S-30 fuses?

A standard Edison-base plug-fuse holder rated for 125 V AC and 30 A that accepts S-series rejection-base fuses is required for installation.

Will these S-30 fuses coordinate with older 125 V AC Type-S or SLO fuses still in my panel?

Yes — the S-30 is equivalent to Bussmann S, Littelfuse S, SLO and SOO series, so it coordinates with existing 125 V AC Type-S rejection-base fuses.

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