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Cylindrical solar fuse, fiberglass body, silver end caps

Bussmann

Bussmann PVS-R-40 Solar Fuse 40A 600V AC/DC line protection

SKU CH-A6GP-P3EQ9

A 40 A fast-acting cylindrical fuse rated 600 V AC and 600 V DC for photovoltaic line protection

  • 40 A rating protects 600 V photovoltaic strings
  • Fast-acting RK5 design clears faults in milliseconds
  • 200 kA AC interrupt rating handles severe short-circuits
  • UL 2579 listed for solar compliance and safety
  • Cylindrical fiberglass body fits standard fuse holders

Solar Line Protection for Photovoltaic Circuits

The Bussmann PVS-R-40 is a fast-acting cylindrical fuse rated at 40 amps for 600 volts AC and DC. It carries a Class RK5 rejection design and meets UL 2579 photovoltaic standards. The fuse is built for solar array string protection where reliable overcurrent interruption is required. It suits installers and system integrators working on commercial or residential PV installations.

Sustained Overcurrent Behaviour

The single-element construction delivers fast-acting response under continuous fault conditions rather than only during momentary surges. Interrupt ratings reach 200 kiloamps at 600 volts AC and 20 kiloamps at 600 volts DC, ensuring safe circuit isolation during prolonged overcurrent events. The fiberglass body maintains structural integrity through repeated thermal cycling. Performance aligns with CSA Component Certified C 22.2 and UL Std. 248-12 requirements.

Cylindrical Rejection Mounting and Build

The 5-1/2 inch length by 1-1/16 inch diameter fiberglass body fits standard RK5 rejection fuse blocks, preventing incorrect fuse substitution. Non-indicating design means visual status checks are not possible, so maintenance relies on scheduled electrical testing. UL Listed and Guide JFGA classification confirm compliance for photovoltaic disconnect applications. The rejection feature ensures only correctly rated fuses can be installed in compatible holders.

Highlights

  • 40 A rating protects 600 V photovoltaic strings
  • Fast-acting RK5 design clears faults in milliseconds
  • 200 kA AC interrupt rating handles severe short-circuits
  • UL 2579 listed for solar compliance and safety
  • Cylindrical fiberglass body fits standard fuse holders

Specifications

BrandEATON BUSSMANN

Questions about this item

How much heat does a 40 A, 600 V fast-acting fuse generate during continuous all-day operation?

A fuse of this rating dissipates only a few watts at full load, so temperature rise inside a properly ventilated combiner box is minimal and requires no active cooling.

What fuse holder or disconnect is required to install this cylindrical, rejection-style PVS-R fuse?

It must be mounted in a 600 V Class RK5 rejection fuse block or PV-rated disconnect that accepts a 5-1/2 in × 1-1/16 in cylindrical body.

Can this 600 V, 200 kA AC / 20 kA DC interrupt fuse replace an older RK5 fuse of the same amp rating in the same combiner?

Yes, provided the existing holder is Class RK5 rejection type and the system voltage does not exceed 600 V AC or DC.

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