100 Years of Service

1919, one year after the end of World War One. The same year our home town Pittsburgh Steelers began their championship trek. A graduate of Carnegie Tech established a Manufacturer’s Representative agency to market and sell electrical components in the mid-atlantic region of Pennsylvania, Maryland, West Virginia, and Ohio.

We honor our legacy but look forward to continuing our history of service to our customers, our principals, and our friends. Thank you to everyone who made this possible.

Protech Systems

Established in 1980, Protech Systems Co., Ltd. specializes in the design and manufacturing of industrial PCs, automation products and embedded computers for companies around the world.  Protech is certified by TUV Product Services for ISO 9001 and ISO 14001. Protech is dedicated to providing customers with top quality, high performance solutions along with the most reliable professional service.  

Protech website: : http://www.protech-usa.net/Home/home_us.as


Concentric Devices

Concentric Devices is the manufacturer of the next generation of value-added electrical terminal blocks. We utilize our “iQ Technology” to provide a completely integrated connectivity solution for electrical control applications.

Concentric Devices provides distribution terminal blocks, CT shunting or grounding terminal blocks and circuit interrupting terminal blocks. Each has a specific function, and yet is fully integrated with the others.



EMPHATEC adds MiBridge

What is MiBridge®

MIBRIDGE® is strictly hardware. It allows existing field wiring to be interfaced to new distributed control system (DCS) or programmable logic controller (PLC) I/O cards quickly and without wiring errors. 


Download MiBridge Brochure

Why use MiBridge®?

Downtime means lost revenue. MIBRIDGE® allows control to migrate from a legacy system to a new PLC or DCS with minimal downtime. The user gets all the benefits of a new control system while minimizing, or eliminating, downtime.

We proudly announce the addition of SensoPart Inc. to our product lines.

SensoPart concentrates on the development, production and marketing of optoelectronic sensors and image-processing vision sensors for factory automation. We also offer inductive, capacitive and ultrasonic sensors. Our products are used in numerous applications and sectors from automotive and machine construction, through the electronics and solar industries, to the food and pharmaceutical industries.

Belden Distributed Control Units – Webinar

Distributed Control Units – WEBINAR!

Learn about the latest advancements in on-machine connectivity and better understand how distributed controllers can improve performance of a system. In this webinar you will see the benefits of

• Sealed on-machine connectivity

• Distributed control for industrial control systems

• On-machine connectivity for cost reduction.


WEBINAR LINK: On-Machine Connectivity

“NEW” Trapped Key Exchange System

SKORPION Trapped Key Exchange System
ALL-in-ONE Stainless Steel 316
Trapped Single Key Solenoid Release with
Rear Release, Request Button and
Emergency Stop Button
IDEM’s SKORPION Trapped Key Exchange System is growing and over the next few mailshots new products will be unveiled that willl be available soon.
This mailshot features the stunning ALL-in-ONE SS-TS-SR-RR.
The SS-TS-SS-RR is shown above fitted with a Gate Bolt that can be used to secure large guard doors from attempts to access hazardous areas.
When the Actuator Tongue is inserted into the switch (guard closed) the key can be rotated and therefore trapped and the main safety contacts are closed – enabling the machine to run.
The Actuator Tongue can then only be released when the internal solenoid in the switch is energised. This then enables to the key to be turned and released, the safety contacts open and the Actuator Tongue can be removed. The key can then be used on other parts of the system to release devices in the Trapped Key System.
Another great feature is that it can be used with safety delay timers to allow a “run-down” time prior to the solenoid being energised prior to releasing the key and Actuator Tongue.
Shown above in the image with the Rear Release – this provides a manual means of escape from within the guarded area. The Red Button and the Red Key Release Handle can be used to release the lock and the key simultaneously from within the guarded area in the event of an emergency. Both buttons protrude through the guard frame to enable access to the switch from inside.
For more information on the Skorpion Trapped Key Exchange System click here.


          A trapped key guarding system is reliant upon the transfer of coded keys between a power isolation switch (or control switch) and a locking mechanism which is fixed on a guard or guard door. (See example below.)
The primary and essential feature of the system being that the removable key is trapped either in the key exchange, guard lock, or in the power isolation switch.
The interlock on the guard is designed so that the trapped key can only be released when the guard has been closed and locked – preventing the key from being returned to the isolator (or control switch).
Once the guard is closed and locked only then can the key be transferred from the guard back to the isolator (or control switch).
Turning the key to the “ON” position on the isolator switch traps the key preventing the key’s removal while the isolator switch is in the ‘ON’ position.
  • No reduction of integrity due to the distance between movable guard and control system.
  • High mechanical integrity, robust fixings and holdings suitable for all types of guards.
  • Eliminates the need for electrical wiring to each movable guard.
  • Available in Stainless Steel 316 – suitable for harsh or hostile conditions.
  • Also available in mirror finished Die Cast metal.
  • Stainless Steel suitable for CIP and SIP cleaning processes.
  • All keys coded in the factory and virtually impossible to override.
  • Keys are colour coded and easily identifiable.
  • Prevents shortcuts by using a logical set of procedures.
System example:

Configurable Solenoid Locking Interlock Safety Switch featuring RFID Interlocking

Providing end user configuration for machine control with push buttons, lights, e-stops,etc. the KLM-Z-4ST launching in April has been designed to incorporate high anti-tamper unique RFID coding and provide PLe safety levels to ISO13849-1.
The KLM-Z-4ST saves wiring and extra expense by incorporating options of start/stop buttons, E-Stops, Run buttons all in one housing instead of using separate components.
The KLM-Z-4ST’s RFID sensing is complemented by a traditional cam locking system which has been developed with a Holding Force of up to 3000N to keep guard doors closed until hazards have been removed.
The unique rotating head on the KLM-Z-4ST provides end users with 8 actuator entry positions with both Front and End actuation availalble.
A staggering 32 million RFID codes are available – making each switch unique – providing high coding to ISO14119.
The high specification die cast metal body with stainless steel head uses Idem’s specially developed double seal lid gasket to maintain the IP67 enclosure protection.
With a slim profile they have been designed to fit on 50mm (2in) frame sections or to applications where space is restricted.
Like othe other switches in the KLZ range the KLM-Z-4ST is offered with a choice of standard or flexible actuators for guard doors where there is slight door misalignment.
M12 Quick connect version available.

Bonded-Pair Technology, Now in a 4-Pair Cordset

Lumberg Automation’s new shielded, bonded-pair, TPE-jacketed cordsets are a compact and cost-effective way to provide customers with a 600V-rated, 4-pair industrial Ethernet solution.

  • Best performance in high-noise environments
  • Meets 600V AWM requirements
  • Currently available in Americas

 Maintain Signal Transmission in High-Noise Environments 

Upgraded Shielded Industrial Ethernet Cordsets from Lumberg Automation 

 Achieve better performance in harsh environments – at a competitive price – with shielded, 4-pair industrial Ethernet cordsets. 

Proven Design – prevent noise from hurting signal transfer speeds with extra immunity in high EMI and RFI locations from Belden’s patented Bonded-Pair technology 
Elevated Performance – upgrade to robust, highly-flexible, sunlight, and oil resistant TPE jacketing, which holds up far better to flexing and abrasion than PVC-jacketed cordsets 
Enhanced Integration and Safety – meet the requirements of high-powered machinery in code-regulated environments with 600V AWM-rated cordsets 

We proudly announce the addition of Belden Automation Products

Industrial Connectivity Solutions from Belden Founded in 1902, Belden’s long-term proven solutions are in reliable operation worldwide. Our two leading brands – Hirschmann and Lumberg Automation – combine proven experience with innovation. And a focus on customer needs has made us the global leader inhigh-quality, end-to-end signal transmissions. Developed with ease of use in mind, our industrial connectivity solutions are especially designed to stand up to surroundings characterized by dust, water and heavy vibrations. Whether you want to transfer power, data, signals or all combined in the form of an intelligent I/O system, our diversified product range offers you the right solution for every application.

We proudly announce the addition of IDEM Safety Products

  • Mechanical Interlock.


    IDEM offer a diverse range of products covering all aspects of the human-machine interface.

    All of our products are designed and manufactured in the UK to the latest international standards in a purpose-built facility based in the North-West of England. From non-contact safety switches through to some of the most innovative and ground breaking products in the industry, IDEM’s range will almost certainly provide a solution for your machine safety application. Let IDEM help you work more safely.

    As a technology company, our Research and Development efforts are focussed on producing the finest products by fostering innovation and ingenuity, whilst maintaining compliance with the latest standards and approvals.

    See the range