TURBRO S15 Plus RV AC Soft Start Kit for 15,000 BTU Non-Inverter ACs — Cuts Startup Draw 60–75%, Weatherproof

The TURBRO S15 Plus RV AC Soft Start Kit reduces startup power by up to 75%, enabling reliable air conditioner starts on limited shore power or small generators while protecting the compressor and onboard appliances.

If you’ve ever lost shore power or tripped a breaker when your RV air conditioner kicked in, this compact TURBRO soft starter is built to prevent those interruptions. Designed for non-inverter RV ACs up to 15,000 BTU, the S15 Plus lowers the surge current at startup so air conditioners and other devices can run together on restricted electrical supplies. It works across a wide voltage range (100–240 V / 60 Hz), includes weatherproofing, and shows operating status via three indicator lights for easy troubleshooting.

How does the S15 Plus reduce trips and power failures?

The unit temporarily limits the inrush current drawn by the AC compressor during startup, smoothing the voltage demand so breakers and small generators aren’t overwhelmed. That prevents the sudden load spike that commonly causes outages and allows multiple devices to operate without interruption.

• Lowers startup amperage by 60–75% compared with direct starts
• Permits two ACs to operate on a 30 A hookup when combined current under 30 A with two soft starters
• Compatible with small portable generators like Honda 2200 and Westinghouse iGen2200

Will it work with my RV’s electrical setup and air conditioner?

The S15 Plus is made for non-inverter RV air conditioners that need high startup amps and fits units up to 15,000 BTU. Its broad voltage acceptance (100–240 V / 60 Hz) gives flexibility for different vehicle systems and international voltages compared with many 115 V-only designs.

• Suitable for travel trailers, motorhomes, and campers with non-inverter ACs
• Designed for ACs requiring more than 40 A to start without assistance
• Works across common voltage ranges for varied electrical environments

How difficult is installation and what protections are included?

Installation is straightforward for anyone comfortable with basic RV wiring: disconnect the compressor and control box harness, then wire the soft starter according to the included diagram. The S15 Plus also adds durability and protection through a waterproof shell and an epoxy-sealed circuit board to resist moisture and outdoor exposure.

• Simple 6-wire hookup between compressor, control box, and soft starter
• Waterproof outer casing plus epoxy-sealed PCBA for extra reliability
• Three indicator LEDs (TEST, START, RUN) for instant status checks and easier troubleshooting

What practical benefits will I notice day-to-day?

Beyond preventing trips, the soft start reduces compressor noise and vibration, creating a quieter cabin and less mechanical stress on the air conditioner. You’ll also be able to run other appliances—fridge, fan, TV, toaster—without being forced to wait for the AC to cycle or risking breaker trips.

• Quieter compressor start with reduced vibration
• Fewer interruptions to other onboard electronics and appliances
• Visible LED indicators for fast operational checks

Who is this for: The TURBRO S15 Plus is ideal for RV owners, camper and trailer travelers, and anyone using small portable generators who needs dependable AC starts without upgrading shore power. It suits non-inverter rooftop ACs up to 15,000 BTU and users who want long-term protection for compressors and a calmer, more reliable onboard electrical experience.