SDE Enterprise VFD Chassis front view
3LH Enterprise Chassis

Light Commercial and Agriculture AFE VFD

The 3LH Series Enterprise VFD has nearly all the features and performance of the larger 3LH systems integrated into a compact and field-serviceable enclosure.

3LHE Series drives have a unique active switching input module that does not produce high levels of harmonic distortion. These drives are IEEE-519 compliant with no additional harmonic filter required. The active front end also provides the added benefit of power conditioning for the VFD. This allows the user to set the output without concern for utility power fluctuations.

See the 3LH Signature or Performance for applications requiring more than 50 horsepower.

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System setup with Perfect Pressure requires only a few minutes and is capable of controlling complex pump systems with ease.

The 3LH Series VFD's control pressure consistently regardless of demand. The pump system runs smoothly with fewer instances of short cycling.


1LH Enterprise VFD in a below-ground installation

The Phase Technologies 3LHE is an industrial-grade product designed for harsh conditions.

Easy Installation

Service and Support

Standard 2-Year Warranty

230 V Model Comparison

Model Horsepower Rated Input Rated Output
3LHE005R 5 HP 18 A 18 A
3LHE007R 7.5 HP 24 A 24 A
3LHE010R 10 HP 31 A 31 A
3LHE015R 15 HP 46 A 46 A
3LHE020R 20 HP 61 A 61 A
3LHE025R 25 HP 75 A 75 A
3LHE030R 30 HP 91 A 91 A

230 V → 460 V Voltage Doubling Model Comparison

Model Horsepower Rated Input Rated Output
3LHE2105R 10 HP 31 A 18 A
3LHE215R 15 HP 46 A 24 A
3LHE220R 20 HP 61 A 31 A
3LHE225R 25 HP 77 A 38 A

460 V Model Comparison

Model Horsepower Rated Input Rated Output
3LHE405R 5 HP 9 A 9 A
3LHE407R 7.5 HP 13 A 13 A
3LHE410R 10 HP 18 A 18 A
3LHE415R 15 HP 24 A 24 A
3LHE420R 20 HP 31 A 31 A
3LHE425R 25 HP 38 A 38 A
3LHE430R 30 HP 46 A 46 A
3LHE440R 40 HP 61 A 61 A
3LHE450R 50 HP 77 A 77 A


MCCB & Service Rated Disconnect

An external service disconnect and integral breaker for ease of maintenance or installations that require it to meet electrical code.

Surge Protection

Strikesorb provides class-leading multiple hit protection ensuring continuous protection of your critical equipment.

Output Filter

460 V installations other than those with short lead lengths often require output filtering to protect the motor from damage.

Hand/Off/Auto (HOA) Switch with Speed Potentiometer

Externally mounted HOA switch and speed potentiometer. Used to switch between user or automatic control and adjust motor speed on the output of the drive.

Extended Warranty

Although durable and robust in design, a little extra peace of mind never hurts. Phase Technologies is happy to offer an extended warranty for all of those applications that demand a bit extra.

About the Panel Shop

The options available for 3LH Enterprise VFD's are built-to-order in our UL 508A panel shop. Every drive is a custom drive at Phase, options typically do not impact lead times.

Read More about the Panel Shop


3LH Series

Contact our sales department for terms and pricing on 3LH Series variable frequency drives.

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