Lenze VFD Inverter Drives

About Lenze

Founded in 1947, Lenze is a leading global supplier of factory automation equipment, including motor controls, gearmotors, and servo drives.  Headquartered in Germany, with American manufacturing headquartered in Uxbridge, MA.  Lenze drives are German engineered and American built offering an excellent quality to price value.

Caldwell Electric is an authorized stocking distributor for Lenze 

Lenze VFD drives typically have long lead times from the factory, on the order of 25 working days or more.  We have one of the best stocks of Lenze drives in the US. Please check our website or contact us to see if we have what you need in stock.

Lenze VFD Product Lines



Lenze SMV VFD 

This is a very popular line of stand-alone drives, available in single-phase and three-phase inputs for HP ranges from 0 to 60 HP.   They have a robust series of features and options available, including enclosures in NEMA 1 to NEMA 4X watertight with and without integrated disconnects, as well as many control and network interface options.

Download Lenze SMV Documentation:

 See all Lenze SMV Drives



Lenze i500 / i550 Series VFD

This is the newest line of AC drives from Lenze.  Designed for very small spaces inside of cabinets and control systems.  Dimensions of only 3.54 x 9.8 x 5.12 inches (for 0 to 5.5kw), they feature the latest technology and options, including wifi and bluetooth modules.   Very price competitive as well.

Lenze i500 Documentation:

See all Lenze i500 Inverters



Lenze ProTec VFD

This is the i500 series drive packaged inside a stand-alone enclosure of choice, including NEMA 1 and NEMA 4X.  

Lenze Protec Documentation:

AC Tech (Obsolete) -


Lenze AC Tech VFD

Lenze acquired AC Tech in 1999.  AC Tech drives were well-loved by users because of the easy-to-navigate alpha-numeric LCD display.  Unfortunately, this product line is no longer manufactured or supported.  We have a few AC Tech drives left in stock.

Lenze AC Tech Documentation: