Welcome to Motortronics

Motortronics is a worldwide-leader specializing in the manufacturing of solid state AC motor controls and motor protection products. Founded in 1982, the company’s headquarters are located in Clearwater, Florida and have additional facilities in the British West Indies, China, South Korea and the UK. The company has shipped over 2 million solid state starters and controllers to virtually all industries around the world, amassing more real world experience than any other manufacturer in the business. With over 600 employees in multiple facilities and authorized sales & service representatives located around the globe, Motortronics is now one of the largest manufacturers of solid state power controls in the world.


Motor Control Products for Any Application

Product Categories

Low Voltage Soft Starters

Digitally programmable solid-state reduced voltage soft starters for smooth load acceleration.

Medium Voltage Soft Starters

Medium Voltage Soft Starters designed to start AC motors in any fixed speed application. Providing maximum protection, smooth and stepless control.

Motor Protection

Advanced Motor Protection, True Thermal Modeling, Motor Power Monitoring – KVA, kW, KVAR, Power Factor, RTD and Current monitoring for AC Motors.

Phase Controllers

Phasetronics Single and Three Phase SCR Power Control features phase angle control to provide smooth proportional output power from 0-100%.

Voltage and Current Transformers

Voltage Transformers with input ranging from 69V to 15.5kV to 110/220 or 120/240V. Ansi and non-Ansi rated 600V current transformers.

Electronic Motor Brakes

Stop AC Motor loads using an electronic motor brake to Maximized Safety, Increased Productivity and Maintenance-Free Operation.

Winding Heater Controllers

Keeps motors warm & moisture-Free during extended shut down times.

MV Contactors

Medium voltage three phase contactors with voltage rang of 7.2 to 15kV up to 800A.

  • Phasetronics Inc. dba Motortronics
    1600 Sunshine Drive
    Clearwater, Florida 33765
    Tel: 727-573-1819
    Fax: 727-573-1803

  • Fairford Electronics Ltd.
    Bristow House,
    Gillard Way,
    Lee Mill Industrial Estate
    PL21 9GG,
    United Kingdom
    Tel:+ 44 (0)1752 894554

  • Motortronics International Korea Co. Ltd. (MIK)
    601, Daeryung Techno Tower 5-cha
    Gasan-dong, Geumcheon-gu
    Seoul, Korea 9153-774
    Tel: 82-2-867-5808
    Fax: 82-2-867-6004

  • M & P Machinery & Electronics Control
    32 Jiaxin Road, Jimo
    Qingdao, China 266229
    Tel: 86-532-81725028
    Fax: 86-532-81725038

Quick Ship Soft Starters

In stock today - In your facility tomorrow

208-575V, up to 1000 HP
500% overload for 60 sec
Circuit Breaker or Fuse-Disconnect
NEMA 4 or 12 Enclosure
Advanced Motor Protection
Door Mounted Keypad and Pilot Lights

VMX-H Brochure
Click here to open document or right mouse click to save document 896 KB (PDF)
Quick Ship Magnetics

In stock today - In your facility tomorrow

Current Transformer
Low Voltage Transformers
MV Transformers
MV Control Power Transformers

Magnetics Brochure
3.69 MB (PDF)

Heavy Duty Starters in N4/N4X/N12 Enclosure

The VMX Configured Soft Starter is designed for Heavy Duty Loads and includes the advanced features of the VMX2 Chassis Soft Starter in a N4/N4X(IP66)/N12 Enclosure. The Smart Door Customer Interface Panel allows for Superior Functionality and Diagnostics.

VMX-H Configured Series

Full Featured Configured Soft Starter

AC Supply Voltage: 208 - 575 Vac
HP Ratings: 3 to 1000 HP
Amp Ratings: 18 to 1080 Amps
Overload: 500% for 60 sec.
Bypass: Line Start Rated Contactor
Enclosure: NEMA 4/12

VMX-B Configured Series

"Basic" Configured Soft Starter

AC Supply Voltage: 208 - 575 Vac
HP Ratings: 7.5 to 1000 HP
Amp Ratings: 25 to 1080 Amps
Overload: 500% for 60 sec.
Bypass: Start Rated Contactor
Enclosure: NEMA 4/12

VMX S.A.F.E. Series

Soft Starter with safe main enclosure

AC Supply Voltage: 208 - 690 Vac
HP Ratings: 7.5 to 1000 HP
Amp Ratings: 25 to 1080 Amps
Overload: 500% for 60 sec.
Interface: Standard or Msmart Touch Screen
Enclosure: NEMA 4X - 304 Stainless Steel