PowerMax PMTS-50 Automatic Transfer Switch – 50 Amp RV Power Management

The PowerMax PMTS-50 Automatic Transfer Switch is engineered to deliver safe, dependable power management for RVs equipped with 30 or 50 Amp AC service. When plugged into shore power, the switch automatically routes electricity to your RV’s appliances. If you start your onboard generator, the PMTS-50 waits 20–30 seconds (to allow voltage to stabilize) before transferring power to your generator supply.

With a rated capacity of 50 Amps and support for 120/240 VAC service, this switch prevents two power sources from entering your RV’s AC distribution panel at the same time—protecting your electrical system. Its rugged build, lightweight design, and straightforward installation make it a reliable solution for both new installs and replacements.

Backed by a 2-year manufacturer warranty, the PMTS-50 is an essential upgrade for safe and efficient RV power management.

Key Features:

• Automatic Power Transfer – Switches between shore power and onboard generator.
• 20–30 Second Time Delay – Ensures stable generator voltage before transfer.
• 50 Amp Rated Capacity – Compatible with RVs requiring 30 or 50 Amp AC service.
• 120/240 VAC Operation – Supports dual-voltage input and output.
• Overlapping Protection – Prevents both power sources from entering AC panel at once.
• Compact & Lightweight – Easy to install in RVs and motorhomes.
• 2-Year Manufacturer Warranty – For added peace of mind.

Specifications:

• Brand: PowerMax
• Model: PMTS-50
• MPN: PMTS-50
• UPC/GTIN: 685867998464
• Input Voltage: 120/240 VAC, 60 Hz
• Input Current: 50 A
• Output Voltage: 120/240 VAC, 60 Hz
• Output Current: 50 A
• Dimensions: 9.0" L x 9.0" W x 5.25" H (229 x 229 x 133 mm)
• Net Weight: 4.4 lbs (2.0 kg)
• Shipping Weight: 6.0 lbs (2.7 kg)
• Condition: New
• Warranty: 2-Year Limited Manufacturer Warranty

Included in the Box:

• PowerMax PMTS-50 Automatic Transfer Switch
• Installation instructions

Applications:

• Recreational Vehicles (RVs)
• Motorhomes
• Travel Trailers requiring 30 or 50 Amp service

Proposition 65 Warning (required in California):
⚠️ WARNING: This product can expose you to chemicals including lead and other substances, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov