KB Electronics KBMM-225D

KB Electronics · KBMM - DC Drive
KBMM SCR Drive - Chassis 1-1/2 HP (No.9451)
Catalog Number: KBMM-225D
Part Number: 9451
3/4, 1 1/2
Input Voltage
115V, 230V
Output Voltage
90V, 180V
Input Phase

Product-line overview

Our selection of KB Electronics DC drives offers a wide variety of drives for DC motor variable speed control. Select a drive rated for fractional HP up to 5 HP rated motors and a large selection of input and output voltage ratings. They feature enclosures from chassis to NEMA 1 and NEMA 4X.

This product requires a resistor and fuse. Please include the HP and voltage of the motor that the drive will use with. This will be included with your drive.

Ships next business day

Available for Delivery

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Stock Locations

Edmonton [eMotors #1], AB: In Stock (2)
Edmonton, AB: In Stock
Burlington, ON: Out of Stock
Saint-Hubert, QC: In Stock
Oakville, ON: In Stock
Anjou, QC: Out of Stock

On Order

2 Expected

Technical Support Available 8:30am-6:00pm EST

Call 1-800-890-7593

KB Electronics: KBMM - DC Drive (3)

KBMM-1253/4115V90V1Chassis $194.11
KBMM-225D3/4, 1 1/2115V, 230V90V, 180V1Chassis $217.67
KBMM-2251 1/2230V180V1Chassis $257.04


The KBMM Series of DC Drives are rated for 1/100 to 3 horsepower. This chassis full-wave DC motor control is the ultimate in reliability and performance. The drive contains Direct-Fed CL that helps protect the SCR power bridge against shorts due to commutator arcing and prevents motor demagnetization. 25 Amp SCRs and AC line and armature fusing further enhance reliability. A Plug-in Horsepower Resistor® is required to operate the drive and eliminates the need for recalibration when used over a wide range of motor horsepowers. A 5k ohm potentiometer is included.

Why Use a DC Drive?

DC drives offer precise speed control for DC motors, making them perfect for applications that require fine-tuned control over speed, torque, and power. Adjusting the speed is a breeze, usually done through a potentiometer or analog input signal. These versatile drives are available in both DC and AC input options, and come in a variety of enclosure styles to suit any need.

By utilizing a rectifier circuit, DC drives effectively convert AC or DC input into the necessary DC supply for the motor, allowing for seamless speed control. This adaptable supply can be easily adjusted to meet the specific speed requirements of the motor.

With their exceptional performance, DC motors and drives are an excellent choice for a wide range of applications such as conveyors, turntables, and other scenarios where adjustable speed and consistent or low-speed torque are essential. Additionally, they excel in dynamic braking and reversing applications, commonly found in various industrial machines.

Where to Buy DC Motor Controllers in Canada

Shop DC drives online through our Canadian website today. With convenient filtering options, you can easily find the drive you're searching for. Our DC Drives are distributed from Edmonton, AB; Toronto, Ontario; and Montreal, Quebec. Most controls will be delivered within 1-5 business days when shipping within Canada.

Our DC drive category covers the latest DC control technology, giving you a complete selection of single-phase and DC power input options. Horsepower options start at fractional HPs up to 7 ½ HP. Select the appropriate enclosure type for your application from chassis, NEMA 1, NEMA 4, NEMA 4/12, and NEMA 4x. Output voltages range from 12 volt to 230 volt. Designed for various industries from agriculture to automation to fabrication and beyond, our offering of dc motor speed controllers is from the top brands, KB Electronics and Leeson.

Need a hand finding the right motor speed controller for your application or legacy replacement? Contact our motor experts today. They have extensive knowledge, backed by over 45 years of experience, to help you with your electric motor project. Contact our team for support through phone (800-890-7593) or email (customerservice@emotorsdirect.ca).

Electrical Data
HP CT Rating
3/4, 1 1/2 HP
HP VT Rating
115V, 230V
90V, 180V
Max CT Current
Max VT Current
Hz Range
Physical Data
1 lb
Ambient Temp
Additional Data
Agency Approvals
cUL & CE
Country of Origin

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About KB Electronics

With stock shipping from Edmonton, Alberta, KB Electronics' products find applications in diverse industries such as HVAC, industrial automation, material handling, and more. Their motor drives are designed to control the speed and performance of AC and DC electric motors.

With flagship products like the KBAC Hybrid Drive, KB Electronics has become a trusted brand in the food production and chemical processing industries. This drive offers a NEMA4X/IP65 enclosure, protecting the internals of the drive from dust, water, and corrosion.

These KB Electronics speed controllers are known for their versatility and compatibility with various motor types. These products are designed and assembled in Florida.

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