PC-8R Fuse Box

The Power Center 8R ( PC-8R ) is a PDM / Fuse box for powering accessories on small vehicles such as motorcycles, ATV’s, snowmobiles, camping trailers etc. It provides 6 switched and 2 battery direct, fused connections. With a rating of 40Amps it is suitable for many applications. All that is needed is a battery connection & a switched input signal. Perfect for getting wires off the battery terminals, and managing power to accessories.
Size (not including mounting ears): 81mm x 58 mm x 30mm (3 1/4” x 2 1/4” x 1 1/8”) - (L/W/H)
Specifications and Features:
- 4 threaded insert nuts provide case mounting and fuse panel installation mounting points
- comes with an assortment of ATM fuses, one for each output circuit and a few extras
- 8 hot + outputs (2 un-switched circuits, 6 switched circuits)
- Switched circuits are turned off when the bike is shut down. An un-switched circuit is always hot - can be used for charging the battery
- 8 ground outputs - much better to ground your auxiliary circuits here than on a bike’s frame
- maximum fuse panel capacity 40 Amps
- 30 Amp max switched. 20A max un-switched ( combination must be under 40 Amp total )
- maximum output circuit capacity 15A continuous
- maximum output wire size 12 AWG (3 sqmm)
- Spare fuse holder inside the PC-8R case ( can be use to hold 2 spare fuses )
- all hardware is stainless steel (except input posts which are tin plated steel)
- black satin polycarbonate cover makes unit splash-proof yet allows it to breathe and stay cool
- cover mounting tabs on each end can be broken off or left on, depending on mounting choice
- simple robust design means no overheating and no problems with vibration
- Unparalleled reliability and proven by adventure riders over the last 17yrs

PC-8R Fuse Panel Only
PC-8R fuse box only. For DIY installation. Includes fuses pack. Built in relay and noise suppression. Suitable for Canbus bikes. Wiring kits available separately or check the Bike Specific pages for kits for your bike.

PC-8R Fuse Box With Wiring Kit – 30A
The 30A amp kit is good for bikes with up to around 600cc. The wiring is a little more compact than the 40A kit and the main fuse are more common. The wiring kits are also a little less expensive. This is a great kit for mid sized adventure bikes like the CRF250/300 Rally or KTM 690. It is also great for most sports bikes, where under seat space is minimal. I run one on a KTM 1290 Super Duke to power USB ports, Navi,
and Heated Grips.
30A, 40A Kits what is the difference?
All PC-8R fuse boxes can handle 40A, so both type kits use the same fuse box.
The difference is in the wiring kit. The 30A kit can handle 30A continuously. It cannot hand 40A continuously. The 40A kit has thicker and or more wires and bigger fuse holders to deal with the higher current.

PC-8R Fuse Box With Wiring Kit – 40A
There are two types of wiring kit for the PC-8R. The switching lead is the same for both type kits. The main difference is the current capacity. 40 Amp kits use a LP JCASE fuse and 10AWG wire, whereas the 30A kits use a Bussmann type ATO fuse holder and 12AWG wire. For most bikes up to 600cc the 30Amp version is more than sufficient. For Adventure and larger cruiser type bikes, we recommend the 40A wiring kit.

PC-8R Fuse Box – ‘Positive Ground’
This is a modified version of the PC-8R to work on positive ground vehicles. Works on motorcycles like old Norton’s, Triumphs or Harleys.
When installing on a positive earth vehicle, the battery (+) connects to the PC-8R GND input & the battery (-) connects to the PC-8R 12v input. The switched input would be a -12v signal i.e. not earth. Also note, the PC-8R has a loop though on the switched input. Only the -12v switched signal needs to be connected, that is, no earth.
Suitability & Reliability
Suitability:
The PC-8R is suitable for vehicles with Stators up to 600w. Consider a motorcycle with a 590watt stator. Power from the stator has to charge the battery, power the ECU, lights, ABS, and all the other original devices on the bike. Typically between 50% and 70% of the stator power will be used up by the bike itself. So a 590w stator may only be able to provide between 295w and 177w for accessories. Any time you are using more than the stator can produce, you are discharging the battery & the bike voltage will reflect that. In short, a 40A fuse box is suitable for about 90% of bikes on the market today.
Reliability:
The PC-8 has proven to be one of the most reliable fuse boxes for small vehicles. Over 10,000 unit have been sold. We’ve been selling them for over 15yrs and during that time we have seen less than two failures. With no capacitors to dry out or electronics to be zapped by static, the PC-8 should be just about as reliable today, as one sold 10yrs ago. We’ve taken the same approach with the PC-8R. The on board automotive grade relay is specified to operated at half it’s manufacturer rated continuous current. All components are RoHS compliant and many components are UL listed. The PCB is 94-V0 rated and the polycarbonate case is quite tough & fire resistant. Components are sourced from the USA, Europe, UK and Japan.