Compare energy & power systems by use case, features, trade-offs, price, returns, and seller terms before you buy.
Two 100A automatic backup transfer switches, one 2P and one 3P, split on price and switching speed. Compare the Dual Power and 3P models to find the right fit for your wiring and budget.
Choosing between a 63A dual power switch and a 3P 100A automatic transfer switch? We compare conversion speed, capacity, and mounting to help you pick the right backup transfer switch for your setup.
Between a 100A, 220V two-pole transfer switch and a 63A, 110/220V adjustable backup selector, the right pick comes down to your generator size, load priority, and mounting preference.
Here's how to choose between the $64.99 APC Back-Ups PRO 1000 and the $239.90 Eaton 5P1500R, based on outlet count, power rating, form factor, and warranty.
Need critical power backup? We compare the APC Smart UPS 1500VA rackmount and Goldenmate 1000VA LiFePO4 backup on price, capacity, and battery readiness to help you decide.
Two used APC UPS units-the $64.99 Back-Ups PRO 1000 and the $249.99 Smart-UPS SMX1500RM2U-both offer 8 outlets. The Back-Ups is the lower-priced option for desktop gear; the rackmount Smart-UPS provides more power but requires batteries. Here's how to decide.
The $55.19 CyberPower EC650LCD-R is a certified-refurbished UPS with battery backup and an LCD; the $175.00 Tripp Lite SMART1500LCDT is a used, battery-less 900W tower. Choose the CyberPower for complete setup or the Tripp Lite if you can supply batteries.
Compare the $175 Tripp Lite SMART1500LCDT and $249.99 APC SMX1500RM2U no-battery UPS units to see which 1500VA backup fits your tower or rack setup.
The Eaton ePDU G3 is a managed 1U rack PDU for server rooms, while the 12-24V blade fuse box is a compact 6-way panel for cars and boats. See which fits your power distribution job.
Which automatic backup transfer switch fits your home: the $112.09 100A manual switch for generator owners, or the $999 Jackery smart switch for seamless battery backup with solar-ready features?
Looking for an automatic backup transfer switch? The GEYA 2P 63A handles grid-and-generator switching for USD 29.68, while the 3P 100A adds three-pole capacity and sub-0.1s changeover for USD 53.81.
Compare the Eaton QCGFEP1020 ground fault breaker for 20A/120V equipment protection with the GEYA WiFi MCB for remote short-circuit protection across a 16-63A range.
Between Goldenmate's 1000VA/800W LiFePO4 UPS and APC's 1500VA/865W tower with AVR, the right choice comes down to battery chemistry, output, and price. See where each wins and which fits your setup.
A lower-priced LiFePO4 backup with 800 W meets a 1440 VA / 1100 W 1U rack UPS with five outputs. This head-to-head helps you decide between battery chemistry and certified-refurbished value versus rack form factor, extra capacity, and used-condition trade-offs.
Choose between a used APC Back-Ups PRO 1000 eight-outlet UPS at $64.99 and a new APC RBC152 replacement cartridge at $439.99, based on whether you need a full backup unit or fresh power for an existing unit.
Used rackmount UPS units without batteries: the compact 1U CyberPower OR500LCDRM1Ua at $82.50 versus the 2700W APC SRT3000RMXLA at $203.62. Choose by capacity, space, and defect tolerance.
Two APC UPS options sit at opposite ends of the price range: a used 1000VA model with eight outlets for $64.99 and a new rack-mountable lithium-ion 500VA unit for $399. Here's how to choose.
The same Eaton 5P 1550VA 1U rackmount is available used and new. The used 5P1550GR is $174.99; the new unit is $289.99. See which one fits your budget and tolerance for wear.
A 20-amp 125V inlet box works for a small portable generator, while a 200-amp 120/240V switch powers a whole home. Compare capacity, circuits, and price to decide.
We compare the $75 Reliance 306LRK prewired 6-circuit transfer switch kit with the $149.95 Connecticut Electric EGS 10-7501G2 for 10 circuits. Find out which 30A manual backup switch fits your portable generator setup.
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