Motor Controllers & MCCBs

Are there any snap-in marker cards or adhesive label options to tag the KT_9 products?

Why does my motor controller handle not turn completely to the off position?

Can a KT_7-25S/25H/45H controller be used a branch circuit protection on non-motor or resistive loads like a heater?

What is the maximum voltage rating of KT7 front mounted auxiliary contacts verses side mounted auxiliaries. How do these differences effect KT7 assembled devices, such as E-Combo starters?

A motor branch circuit including a variable frequency drive and one or more KT7 Motor Controllers is a complex system. Successful performance depends on all components, devices and their interconnections. Several key points must be considered when using KT7 devices with VFDs.

I have a KTA3 in my multi-motor control panel. What is the replacement? What are the alternatives to KTA3 Motor Controllers? KTA3-25 controllers transitioned to KT4 or KT7 controllers. KTA3-100 controllers were replaced with KT7 controllers, but only up to 45 amps.

KF7 fuse holders can be applied on the line side of KTA7 or KTC7 motor circuit controllers and matching CA7 contactors. KF7 can also be connected on the line side of a CA7 contactor and/or starter as you would a standard fuse holder. This can increase a panels KAIC rating.

KTU7 busbar can be used on both KTU7 and KT7 motor controllers, but KT7 busbars cannot be used on KTU7 MCCBs. What are some alternatives when assembling multi-motor starter panels?

Proper selection of motor controllers for self-protection relies on the motor FLA, and the motor HP. Choosing based solely on motor FLA can cause problems.

Do the components in a control circuit have a short circuit current rating? UL and NEC rulses define which components in a control panel require a short circuit current rating.

My panel uses a KTA3-25 motor controller. What is the replacement for this device? KT4 Manual Motor Controllers are a direct replacement for KTA3-25 controllers with only a few exceptions.

There are several different types of bus bar systems available. How do I know which system to choose for my assembly? If I have an old bus bar system, what is the current replacement recommendation? What if I need to add a unit to an existing system?

When I mount KT7 in a deep enclosure the shaft seems to droop and miss the handle mechanism. What do I do?

Unlike the fuse box in most residential power centers, industrial circuit protection can rarely be reused after a short-circuit. Some products are specifically tested by UL to withstand a short circuit.

A little known rule of UL inspectors outlines what protection should be used in multi-motor starter panel applications.

A variety of products can be used to perform as a circuit breaker for motor and non-motor loads, but some perform better than others.

CX7 KWIKstarters are UL508 approved because they have a removable cover instead of a hinged door. Rules specifically outline the difference between a cover and a door.

When mounting multiple motor controls in a multi-motor panel, using bus bars is an efficient use of space. Installing the right bus bar for the job can make a big job simple.

What is the meaning of a delta connected system versus wye connected power systems when applied to motor controllers and circuit breakers?

Most panels without control transformers are ordered without any “optional” control circuit fuse, which can leave the control circuit wiring unprotected.

Proper design and compliance with UL/CSA and NEC standards for motor controllers and circuit breaker devices.