Customer Satisfaction is our passion
Innovative Engineering Solutions
Global Manufacturing Resource
Terminal Block and EMI Filter Specialists
Standard product solutions, custom design innovation
ISO 9001:2008 Reliability
Outstanding record of on-time delivery

Leader in Manufactured Electrical Components

Curtis Industries provides innovative engineering solutions for a wide variety of industries. We will quickly design a custom electrical component for you without sacrificing quality, built to your exact specifications.

We manufacture the whole part from start to finish at our facility. From plastic injection and transfer to molding and fabrication, we are able to provide an exceptional product on time, at affordable prices.

All of our components are rigorously tested, ensuring your finished product does not have any defects. Our custom electrical components are designed to meet UL and CSA standards, guaranteeing quality.

As industry defining pioneers, our primary goal is to provide you with innovative engineering solutions. We encourage you to utilize our website as your primary internet resource for information on all electrical component products and services including:

Terminal Blocks, RFI Filters, PCB & DIN Rail Blocks, Relay Sockets

Curtis Industries takes great pride in 75 years of defining, refining and producing the highest quality EMC filters, EMI filters, terminal blocks and all related products at the very best value available industry wide.

Custom Terminal Blocks

Curtis Industries is the leading terminal block manufacturer. Terminal blocks are electrical connectors used to attach wires in the same circuit, without having to cut or splice the electrical wires. We manufacture a variety of styles including:

See all terminal block options from Curtis Industries for more information.

Custom Terminal Blocks

RFI Power Line Filters

High Performance RFI Filter

Curtis Industries has been manufacturing high quality radio frequency interference filters for over 70 years. Our team of engineers design quality into every RFI filter we produce. All of our RFI filters also comply with government emission and safety requirements.

RFI power line filters from Curtis Industries include:

Liquid Level Controls

Curtis Industries liquid level controls sense and control the levels of almost any liquid. Our units are available with fixed or adjustable set points to control levels in fluids with an external circuit resistance of up to 3,000,000 ohms. We offer three main types of liquid level controls, including:

  • Forward mode operation
  • Reverse mode operation
  • Pump and heater level lockout applications

You can also view our catalog to see liquid level control connection diagrams to select the ideal component for your specific application.

Liquid Level Control Custom

Three Phase Filters

Three Phase FiltersAt Curtis Industries, a leading producer of custom, top of the line electrical components and assemblies, our engineers have over 70 years of experience building radio frequency interference filters designed to meet government standards. For the best in three phase filters, we offer F3480/F3600 Filters, featuring:

    EMC solutions up to 600A at 600VAC
  • Power applications up to 360kVA
  • 2-stage filter line supports Delta and Wye connected loads
  • Effective noise suppression in the critical 150kHz-30MHz range

Nearly all electronic devices emit and receive obstructive, unwanted RFI. This interference affects the quality of radio signals, cell phone signals and most other electronics. Three phase filters and other RFI Power Line Filters decrease the radio frequency given off by external electrical sources to acceptable levels, while still allowing the power frequency current to pass through unaffected. RFI filters also protect other electronic equipment from the interference given off by your device. At Curtis Industries, we test our three phase filters and other RFI filters to ensure they meet all government and international safety and emissions requirements.

While smaller electronic devices like computers only use single phase power, the high power loads of large electrical networks utilize three phase power.

Applications for Three Phase Filters:

  • Motors and Motor Control Centers
  • Facility Filters
  • Laser WeldersContact Button
  • Uninterruptible Power Supplies
  • Robotics and Automated Test Equipment
  • Power Conditioning Units
  • CNC Machinery
  • Industrial Ovens
  • Elevators

Curtis Industries is the best choice for superior Three Phase RFI Power Line Filters, serving worldwide markets through experienced representatives and distributors. To learn more about radio frequency interference, check out our RFI filters resources.

Tempest Line Filters Now Part of Curtis Industries

Filter NetworksCurtis Industries is pleased to announce we now carry tempest line filters for military applications.

Our inventory includes:

We also offer highpass, lowpass & bandpass filters for audio, communication or telemetry applications, and fiber optic couplers, available in single or dual circuit configuration, with standard or custom designs available.

All of our TEMPEST line filters are designed for use in extreme temperatures from -55 degrees Celsius to 85+ degrees Celsius.

Military Filters

Terminal Barriers, Barrier Blocks, and Barrier Strips

Curtis Industries is a nationwide supplier of barrier terminal blocks with screw and push in connections.  Barrier blocks helps to protect your terminals against frayed wiring, shorting, and acts as a barrier between different terminals.  This helps to achieve you a higher electrical rating, and improves the efficiency of your electrical setup.  We carry both single row, and double row barrier strips for electricians everywhere.  In addition, Curtis industries also carries an extensive inventory of:

  • Terminal Blocks 
  • RFI Filters
  • EMI Line Filters 
  • DIN Rail Terminals 
  • Relay Sockets 
  • Liquid Level Controls 

We offer some of the best electrical components on the markets, and we are a leading electrical component manufacturer of high quality electrical supplies. 


Curtis Industries Barrier Blocks and Barrier Strips

Electrical Component Manufacturers Are a Great Resource

Please use the Curtis Industries web site as the educational tool it is intended to be. Reference this resource often for updated electrical component information including double row terminal blocks, barrier terminal blocks, RFI filters, and more.

Our goal at Curtis Industries is to add performance, reliability and profitability to every aspect of the current carrying device industry... FOR YOU!

The entire Curtis team looks forward to serving your electrical component needs. Increase your profitability from product development through production with Curtis Industries.

Contact Button

Please contact custom electrical component manufacturers at Curtis Industries to experience and utilize our electrical component industry defining expertise, our patented technology, our intuitive genius and our ability to provide innovative custom solutions.