Exciting News:

Diamond Engineered Sales Joins WD Engineered Sales!
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Manufacturer’s Representative of Quality Products

A trusted reliable resource for your industrial control panel requirements. We can assist you in your design and choosing: Enclosures, Cooling & Heating of Enclosures, VFD Drives,HMI’s and Electrical components. Plant-wide Signaling and Thermal Solutions and solving engineering and manufacturing problems.

Our mission and passion are to serve in YOU in the Midwest region -
Southern IL, MO, KS, NE.

Let us know how we can assist you.

Manufacturers Representative of Quality Products from the Following Companies:

Industrial Enclosures
NEMA 1, 3R, 4, 4X, 12
Custom & Standard UL & NEMA Rated
304 & 316 Stainless
Aluminum and Carbon Steel

www.electrical-enclosures.com

Power Quality Management
Power Quality. Solved. MTE Corp provides simple, robust power quality solutions. Power quality management, Harmonic Filters, dV Sentry dV/dt Filters, dV E-Series, SineWave Filters. Active Harmonic Filters SyntriX Line and Load Reactors, Link Chokes

www.mtecorp.com

Industrial Enclosures
The leading provider of non-metallic electrical enclosures, offers a comprehensive range of cUL/UL-listed NEMA 4X enclosures and NEMA 6P polycarbonate enclosures and junction boxes. Our robust, non-metallic solutions provide exceptional protection and longevity. With sizes up to 32x24x12

www.fiboxusa.com/

Cable Management Systems
Smart Cable Entry Systems for Cables with or without Connectors, Split Cable GlandsMembrane Cable Grommets, Cable Entry Plates, Strain Relief and Cable Management,EMC Solutions - Shield Clamps and Grounding Components, CONFiX™ Cable Conduit System and Cable Protection Conduits,  Cable Pass-Through with Brush Seal, icotek TOOLS Punch Driver Sets, Rail Cutters, Knockout Punches and Cable Entry Systems for the Food Industry in FDA Signal Color Blue.   --  IP54 to IP66/ IP68/UL type 4X (depending on type).

www.icotek.com/en-us

Enclosure Thermal Management
AC Cooling Units NEMA 12, 3R/4 and 4/4X Filter Fans NEMA 12, 3R, and 4/4X, Rain hoods Air to Air & Air to Water Heat Exchangers, Heaters, Thermostats and Hygrostats

Liquid Cooling - Compact & Packaged Chillers
Water/Water Heat Exchangers

www.pfannenbergusa.com

Perfect Voltage Solutions
Transformers, Power supplies, Line Reactors, and EMI filters
‘Made in the USA‘ in the Midwest. German engineering with fast, quality-oriented production and a large warehouse in Chicago

www.blockusa.com

Electric Power Solutions
UL/IEC Approved and Listed, Contactors, Mini Contactors,Overload Relays, Manual Motor Starters, MCB, Mini -MS, EMPR,Molded Case Breakers, Air & Vacuum Circuit Breakers

www.lselectricamerica.com

Industrial Networking Communication and Technology Products
Managed and Unmanaged, Ethernet Switches, Ethernet Extenders, Industrial Wireless Access points, AP bridges, and AP repeaters IP67, Industrial PoE60 Watt PoE++, 90 Watt PoE++, Serial Media Converters, Bluetooth, IoT Gateways, 100Mbps, Gigabit, 10G SFP, 10G XFP, M12 Switches, Class 1 Div 2

www.antaira.com

Automation & Drives
VFD's Low Voltage Drives

1 HP up to 800 HP,  Advanced embedded functions and PLC card options.
Stock in Chicago for same-day shipment. 4-year Warranty, 24/7 US Support

VFD Package Solution

NEMA/UL Type 1, 12 and 3R.
Variable Torque Fan and Pump applications

HMI's 4.3" - 15" TFT color LCD
Human Machine Interfaces
Cost-Effective Control and Monitoring Solution

www.lselectricamerica.com/HMI

Industrial Control and Signaling Units
Pushbuttons, Pilot Lights, Emergency Stops,Selector Switches, Rotary Cam Switches from 10 to 63 A,Control Stations, Disconnect Switches and Time Switches

www.bacocontrols.com

Pfannenberg Signaling Solutions
Visual And Audible Alarms For Industrial Safety.
Heavy duty and versatile signaling devices that satisfy numerous Alarm, Warning, and Indication requirements.
Horns / Sounders / Sirens, Flashing Strobe Lights, LED's, Combined Horns with Strobe, Signal Tower / Stack Lights.

www.pfannenbergusa.com

Industrial Control and Monitoring Products
Made in the USA, Timers, Intrinsically safe barrier Relays, Three-Phase Monitor Relays, Voltage Monitor Relays, Current Sensing Relays, Alternating Relays, Seal Leak and Temperature Relays, Liquid Level Contol Relays, General Purpose Relays and Custom Engineered Products

www.macromatic.com

About Us.

We are a Manufacturer’s Representative company providing local representation for quality products from our partners, serving the electrical, electronic, and utility markets in the Midwest. Our mission is to serve you with the best solutions, information, and updates on the latest products, quick, accurate quotes, and assistance in getting the products you need as quickly as possible.

WD / Diamond Engineered Sales continues to serve you in Southern IL, MO, and KS.

Diamond Engineered Sales was established by Mark Diamond in 2015, and we have earned a reputation as a trusted, reliable resource for your industrial control panel requirements.

In January 2026, we merged with the WD Engineering Sales team in Libertyville, Illinois. WD brings deep industry expertise and local market knowledge, a larger sales team, and new product lines to connect manufacturers and customers with the right solutions.

Territories Served by WD team: Currently offering representation in the following states: Illinois, NW Indiana, Iowa, Kansas, Minnesota, Missouri, Nebraska, and Wisconsin.

WD Engineering Sales
1930 Innovation Way, Suite 238
Libertyville, Illinois 60048

Contact: Steve Doctor, President, WD
sdoctor@wdsales.com
Office: 847-541-4115 ext. 109
Cell : 847-404-6227

Our passion to serve you has brought us to where we are today. We can assist you with your design and selection: Enclosures, Cooling & Heating of Enclosures, VFD Drives, HMIs, Signal, Control, and Electrical components. Source, size and quote plant-wide Signaling, and Thermal Solutions, we also take on engineering and manufacturing problems. Our business philosophy: Serving you with integrity, at all times we will do what we say we will do. We aim to establish and maintain long-term relationships with our customers and principals.

Tell me about your next project.

Contact us today or learn more about Diamond Engeineered Sales below.

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Mark Diamond – WD/Diamond
m: 573.579.8402
Mark@Diamondengsales.com

SteveDoctor -President/Owner WD Engineering Sales
Sales: Illinois,Iowa & Wisconsin
m: 847.404.6227
sdoctor@wdsales.com

OlaNordstrom – WD/Diamond 
m: 573.225.5384
Ola@Diamondengsales.com