Choosing a variable frequency drive usually starts with matching the inverter to the motor's power range, not just the voltage. In the world of variable frequency drives and motor controls, two questions matter most: does the drive accept single-phase input, and how much three-phase output can it deliver? These two VFDs both accept 220V input and convert to three-phase output, but their output ratings and listed prices sit at opposite ends of the typical small-to-mid range.
Quick Verdict
If your motor sits at the lower end of the power scale, the marddpair VFD is the practical pick by price. If your motor needs more power, the ALL-CARB VFD has the higher capacity.
Listed Price and Capacity at a Glance
| Product | Listed Price | Power / Key Specs | Price Bar |
|---|---|---|---|
| 1 to 3 Phase 2.2 KW VFD | USD 65.83 | 2.2 KW / 3 HP, 220V, 1-phase input, 23A input current | |
| Single To 3 Phase 7.5KW VFD | USD 119.15 | 7.5KW / 10HP, 220V, 1 or 3-phase input, SPWM, 20A max per phase |
The two drives share a 220V input voltage, and both accept single-phase input to run three-phase output. The meaningful difference is output capacity, and that difference is reflected in the listed price.
Where Each Product Wins
marddpair VFD wins on price and a more compact control layout. Its narrow-body design with independent air duct is set up for side-by-side installation, and the keypad can be external.
ALL-CARB VFD wins on power capacity and input flexibility. It adds SPWM control mode and accepts either 1-phase or 3-phase input, which makes it more useful in varied setups.
marddpair VFD
This marddpair drive is the lower-priced unit of the pair, and that makes it the easier choice when your motor is on the smaller side. Its output rating is aimed at lighter three-phase motors, so you are not paying for capacity you do not need. The drive carries a 23A input current at 220V, works from a 1-phase input, and uses a narrow-body layout with independent air ducting that is designed for saving panel space and allowing side-by-side installation. The keypad can be mounted externally, which adds setup flexibility. The limitation is its power ceiling: when your motor sits at the top of the small-drive range, this model is the smaller of the two and is not the one to choose for heavier loads.
ALL-CARB VFD
This ALL-CARB drive is the higher-capacity unit, so it is the one to step up to when your motor needs more than the smaller VFD can handle. Its larger output rating is supported by SPWM control mode, a 1- or 3-phase input option, an output frequency range up to 3200 Hz, and a maximum current of 20A per phase. That combination makes it the more adaptable option for larger motor controls. The trade-off is the higher listed price; the extra cost only makes sense when your load is heavy enough to justify the capacity. If your motor is small, the lower-priced marddpair unit is still enough.
Final Choice by Use Case
- For lighter three-phase motor loads: Choose the marddpair VFD. You get a compact VFD at the lower listed price.
- For heavier three-phase motor loads: Choose the ALL-CARB VFD. Step up when you need the higher capacity and SPWM control.
