We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
White plastic enclosure RV power supply unit with forced air cooling vents

Adafruit

Adafruit 2 in 1 accessory 45Amp 120VAC to 13.75VDC

SKU CH-1857-PFB0Y

Converts 120VAC to 13.75VDC at 45A with overcurrent, over-voltage and overheat protection for RV battery charging

  • Converts 120VAC to stable 13.75VDC for RV appliances
  • 45Amp output powers multiple devices simultaneously
  • MTBF exceeds 100000 hours for long-term reliability
  • Forced air cooling with overheat protection maintains safe operation
  • Overcurrent and overvoltage protection safeguards connected equipment

RV Power Centre for 120 V AC Hook-Up

The Fortron Source TPN3-45 series unit converts 120 V AC shore power into 13.75 V DC for recreational vehicles. It delivers up to 45 A to run onboard loads and charge lead-acid or AGM batteries in a single plastic enclosure. The UL-listed main circuit breaker accepts a maximum 30 A AC input. This supply suits RV owners who need a combined converter and charger for standard hook-ups.

Forced-Air Cooling With Overheat Protection

A built-in fan provides forced-air cooling while an overheat protection circuit shuts the unit down if temperatures rise too high. Efficiency is rated very high, reducing waste heat during normal operation. The design resists transient high-current surges such as tungsten lamp inrush. Mean time between failures exceeds 100,000 hours, indicating long-term reliability.

Replaces Stand-Alone Converters Without Battery

This power centre replaces a separate AC-DC converter that cannot maintain lead-acid or AGM batteries. The jump is worth it when you want one device that both powers 12 V circuits and keeps the battery bank topped up. It is not for installations that require a different AC input voltage or a higher DC output current than 45 A.

Highlights

  • Converts 120VAC to stable 13.75VDC for RV appliances
  • 45Amp output powers multiple devices simultaneously
  • MTBF exceeds 100000 hours for long-term reliability
  • Forced air cooling with overheat protection maintains safe operation
  • Overcurrent and overvoltage protection safeguards connected equipment

Specifications

No published specifications for this item yet.

Questions about this item

How do I wire the 120VAC input to the unit and what is the breaker step people often miss?

Connect the 120VAC supply to the built-in UL-listed main circuit breaker rated for a maximum of 30A; the step often missed is confirming the breaker is fully seated and switched on before applying shore power.

What maintenance will the cooling system and battery side need over time?

The forced-air cooling fan should be kept clear of dust and debris; the unit is designed for lead-acid or AGM batteries, so periodic terminal cleaning and electrolyte checks on flooded cells are the main upkeep tasks.

At what sustained load does the overheat protection engage first?

The supply delivers up to 45A at 13.75VDC; if continuous draw approaches that limit the internal overheat protection will activate and shut the unit down until it cools.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.