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Manual motor controllers and disconnects safely control and disconnect motors from power. UL 508 rated open frame and enclosed devices are available from reliable brands including Bryant, Merz, and Socomec.
Motor Disconnects & Controllers
Category Selection
Motor controllers are used to switch loads on or off with operator controls. Because of their design, these motor controllers are listed as a Suitable Motor Disconnect under UL Standard 508, which means they can reliably perform both motor control and disconnect functions, all in one compact package.
- A motor controller is used to switch a motor load "ON" or "OFF" and perform this function thousands of times
- A motor disconnect is designed and tested to withstand motor overloads and high short-circuit fault currents while maintaining the ability to disconnect an electric motor for service or maintenance
For part listings and specifications, go to Shop Now
Enclosed Motor Disconnects
UL 508 enclosed non-fusible disconnects are perfect for safely controlling and disconnecting motors. These 3-pole rotary enclosed disconnect switches, pre-mounted in an enclosure, are available in ratings up to 125A, with a 5kA SCCR rating.
Motor Disconnects & Manual Motor Controllers
UL 508 open-frame non-fusible disconnects and manual motor controllers can operate while under load to provide safe isolation. Rotary switches, in DIN rail or door-mount options, are available in ratings up to 125A (50hp); handles and shafts are sold separately. Toggle switch models are also available.
Rotary Cam Switches
Motor transfer cam switches allow seamless changeover from one motor to another; motor reversing switches allow smooth direction change. Merz rotary cam switches are available with 2 or 3 poles, with a 5kA SCCR rating.
Handles, Shafts & Accessories
Rotary handle and shaft assemblies make it possible to externally operate disconnects or controllers installed in an enclosure. Accessories include alignment guides and shaft supports.
Auxiliary Contacts & Additional Poles
Optional auxiliary / alarm contact blocks and additional poles mount on manual motor controllers or disconnects (where applicable) and are used to signal external monitoring equipment of status or alarm conditions. Additional fourth pole, neutral, and ground pole modules are available with ratings up to 125A.
Terminal Shrouds & Covers
Line and load side terminal covers act as guards to shield the operator from touching live terminations.
Mounting & Connection Accessories
Mounting and connection accessories include enclosures and mounting feet, disconnect door mounting hardware, finger guards, and replacement screws.
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