Add to favorites
100A 120V Automatic/Manual Generator Transfer Switch, DIN Rail Mount 110V for Generator Backup Power & Gas Furnace, 50/60Hz, LED Display, CE Certified by MARSTEK - Used condition

100A 120V Automatic/Manual Generator Transfer Switch, DIN Rail Mount 110V for Generator Backup Power & Gas Furnace, 50/60Hz, LED Display, CE Certified — Open-Box, 25% Off

Brand: MARSTEK

Condition: Used - Mint
$4521
$5999
-25% Save $1478
Updated: 51 days ago

Description

【Automatic or Manual Switching】:Meet the generator transfer switch – your ultimate solution for seamless power control. Powered by advanced microcontroller technology, this automatic generator transfer switch ensures your home or RV never skips a beat during outages. It instantly switches from main (L1) to backup (L2) power and back when utility power returns. Want full control? Use manual mode to select L1 or L2 anytime. Ideal as a reliable transfer switch for home generator or RV transfer switch.

【Protection Features】:Safety first, always. This transfer switch comes with built-in over-voltage, under-voltage, and over-current protection—keeping your appliances and electronics safe from power instability. Pre-configured for most home and mobile setups, it also offers adjustable settings for custom use. Whether used as a generator transfer switch for house or RV power switch, your equipment stays protected.

【Real-Time Monitoring with LED Display】:Know your power status at a glance. The bright LED display shows real-time voltage readings and system operations clearly—no guesswork needed. This transfer switch gives you instant visibility, so you’re always in control of your backup power, wherever you are.

【Easy Installation】:Install made easy. Designed to fit standard DIN rails, this compact transfer switch for home generator or RV transfer switch saves space and simplifies setup. Its flexible layout allows quick adjustments, whether in a electrical cabinet, utility room, or mobile application.

【Wide Applications】:From homes and RVs to shops and telecom sites—this versatile generator transfer switch delivers steady power wherever it’s needed. Dependable in hospitals, data centers, and commercial buildings, it’s the go-to generator transfer switch for critical systems that can’t afford downtime.

Meet the generator transfer switch that combines smart automation with robust safety. This generator transfer switch unit ensures an uninterrupted power supply for your home or RV during any outage. Its advanced microcontroller instantly switches to generator power and back when utility power is restored, all while built-in voltage and current protections guard your sensitive electronics. With a clear LED display for real-time monitoring and a compact, DIN-rail design for easy installation, this automatic transfer switch offers professional-grade performance and peace of mind. It's the versatile and reliable solution for everything from residential to critical commercial use.

Sold by

Amazon Warehouse

Verified Retailer

Official Amazon outlet for open-box & returned items

  • Backed by Amazon's A-to-Z Guarantee
  • 30-day return policy
  • Ships from Amazon fulfillment centers
  • Price verified on Amazon

Product Details

SKU:
awhd-us-b0fj1qwxqd
Model:
2 way 100A
Country:
US
ASIN:
B0FJ1QWXQD

Shopping Smarter

Common questions about buying open-box and refurbished.

Why buy refurbished or open-box?
Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $15 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.
What's the difference between open-box and refurbished?
Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.
Why use OpenBoxFox?
Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for MARSTEK products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.
Is it safe to buy refurbished?
Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.

More open-box deals

Updated daily from Amazon, Reebelo, and Dyson.

Sign in to save items

Save favorites and get alerts when prices drop.

or

We'll email you a link to sign in instantly — no password needed.