motor control centers
Motor Control Centers
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Starter panels that match your control system

Scale-Tron motor control centers are the reliable link between the control system and your plant. All the motors: mixer, conveyors, vibrators, screw feeders, can be centrally controlled from one modern fuseless panel.

Our motor control centers are supplied to all industries - not just concrete. We have the capability to design and build any type of control system, very small to very large.  We can supply startup engineers at the job site to ensure everything works out as planned. Scale-Tron is a UL and cUL certified Panel Shop.  We specialize in fuseless designs; the motor control panels do not usually require fuses, even on the incoming power line. All motor starters are protected by individual circuit protection modules which trip on an overload and are easily reset. 

motor control panel
Parts, additions and service

Soft Starters are normally PFS for motors of 50HP and over, PCS for under 50 HP.  The PFS series can include a LCD display of motor current, fault alarms, running time and many other premium functions.  In consequence, you can monitor operation and diagnose faults on these expensive and critical motors. We also routinely supply VFDs (inverters) for motor speed control and couple these to the control system for speed setup.

Panel-mounted current meters and power monitoring can be added at any time. This allows you to monitor critical processes or devices such as under ground conveyor belts. Individual reset and manual trip buttons are internally located. We can provide these on the front panel if required, along with local disconnect switches for extra safety.

We offer a full engineering service up to installation supervision and startup, or you can use your local electrician.
 

6-wire motor connection reduces cost
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Large motors can have the soft-starter wired between the three motor winding connections (“inside the delta”).  This lowers the current rating of the soft-starter to substantially reduce cost while retaining all the benefits of the soft starter.  This feature is useful if you can place the motor control centers near the motors, where the main disconnect switch also becomes the motor safety isolation switch.  It also eliminates the cost of the isolation switch, giving a further saving.  For 2-motor mixers such as the Ocmix RG twin-shaft and similar, when the MCC must be positioned away from the mixer, conventional 3-wire connection should be used.  However, a 6-pole isolation switch is required for the two motors.  We can provide very competitive pricing on this special switch, to avoid having to lock-out two three-phase switches when working on the mixer.