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Cylindrical fiberglass fuse, 76.2 mm long, 20.6 mm diameter, silver end caps

Bussmann

Bussmann PON35 Midget Fuse 35A 250V Time-Delay

SKU CH-YMS0-8A8RF

A 35 A time-delay midget fuse rated for 250 V AC with a 10 kA interrupt rating and cylindrical fiberglass body

  • TypeFuses & Accessories
  • Time-delay operation prevents nuisance trips on motor start-up
  • 35 A rating suits medium-load branch circuits
  • 250 V AC rating covers standard control-voltage panels
  • 10 kA interrupt rating clears faults safely
  • Cylindrical 76.2 mm x 20.6 mm body fits standard midget fuse blocks

Purpose and fit

The Bussmann PON35 is a 35 A time-delay fuse rated for 250 V AC circuits. It protects equipment that draws high inrush current, such as motors or transformers, without nuisance opening during start-up. The cylindrical fiberglass body measures 76.2 mm long by 20.6 mm in diameter and carries a 10 kA interrupt rating at 250 V AC. It suits industrial control panels, HVAC units and similar fixed wiring where a non-rejection midget fuse is specified.

Capacity and headroom

At 35 A the fuse handles sustained loads up to that value while the dual-element design absorbs temporary surges well above the rating. The 10 kA interrupt capacity clears short-circuit faults safely on 250 V AC supplies. It is not suited for circuits exceeding 250 V AC, for DC applications, or for installations that require a Class R rejection feature or an indicating flag to show blown status. The fiberglass tube provides mechanical strength but offers no visual indication.

Replaces and upgrade path

Direct equivalents include the Bussmann PON series and Mersen OTN series fuses in the same 35 A, 250 V AC, time-delay, non-indicating configuration. The swap is worthwhile when the existing fuse has blown, when a maintenance schedule calls for replacement, or when a design change specifies the PON35 rating. It does not fit holders that demand a rejection-style fuse or a different body diameter, and it cannot serve where a higher voltage or DC rating is required.

Highlights

  • Time-delay operation prevents nuisance trips on motor start-up
  • 35 A rating suits medium-load branch circuits
  • 250 V AC rating covers standard control-voltage panels
  • 10 kA interrupt rating clears faults safely
  • Cylindrical 76.2 mm x 20.6 mm body fits standard midget fuse blocks

Specifications

BrandEATON BUSSMANN
TypeFuses & Accessories

Questions about this item

Will this 35 A time-delay fuse coordinate with an older 20 A fast-acting fuse on the same 250 V AC branch circuit?

The 35 A rating and time-delay characteristic let it ride through brief inrush currents that would blow a 20 A fast-acting fuse, so the downstream device opens first under overload while the PON35 handles motor-start surges.

How can I confirm the fuse is intact after installation without an indicating flag?

With power off, measure continuity across the 20.6 mm diameter cylindrical body; a low-resistance reading shows the dual-element link is intact, while an open circuit means the 10 kA interrupt has operated.

Does the box include fuse holders or only the PON35 fuses themselves?

Only the 76.2 mm long fiberglass-bodied fuses are supplied; compatible midget fuse blocks or panel-mount holders must be purchased separately.

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