Product Type: Reed

Littelfuse – Commercial Vehicle Products

Littelfuse offers an extensive product line to help protect, control, and distribute vehicle electrical power in OEM and aftermarket applications for industries such as heavy-duty truck, construction, and agriculture. Littelfuse offers a broad and reliable selection of fuses, fuse blocks, power distribution modules, high-current switches, relays, and solenoids to fit your requirements. For decades, Littelfuse has helped OEMs, engineers and end-users select the right product for their applications. Today, Littelfuse offers the broadest range of products for protection, sensing and control needs while providing exceptional service and support that our customers expect.

FSU Series – Flow Switches

The FSU series of pre-set switches use a reliable and robust reed switch design for their operation.

They have industry standard process connection sizes (push fit or NPT thread) that give a quick and reliable method of installation.

FSU flow switches are based on the high runner FS series flow switches sold today globally, and have connections (either push fit or threaded) to meet North American standard sizes (½”, ¾”).


  • NSF-61 approved
  • Power ratings 25 VA
  • Wide connection range
  • Fast switching, allowing precise control
  • Compact in-line design
  • High life expectancy


  • Circulation pump protection
  • Leak detection
  • Flow sensing
  • Mains water control
  • Dispensing Equipment
  • Cooling system for electronic equipment (Laser Heads, Welding machine, X-Ray Tubes, Semiconductor Equipment)
  • Processing Equipment, Water Purifications and Filtering, Distilling
  • Presses, Rotating Equipment, Conveyors, Machine Tools, Robotics


Reed Switches

Littelfuse offers the widest selection of magnetically operated reed switches.  Reed switches are available in bare glass or overmolded packages with a variety of mechanical, electrical, and magnetic characteristics. Options for customization, such as lead cutting and forming, are available.

ZF Electronics

ZF is a global leader in driveline and chassis technology and on May 20, 2015 ZF acquired TRW Automotive.  The company is now represented in 230 offices in 40 countries.  In 2014 both companies operated independently.  Collectively, the group achieved sales exceeding €30 billion euros with approximately 134,000 employees.  The Industrial Solutions (IS) product line in the Electronic Systems business unit (formerly CHERRY) develops and manufactures electromechanical components, specifically snap switches, panel-mount switches, rocker and sealed rocker switches, a full range of sensor products as well as Energy Harvesting wireless products.  Target customers for the Industrial Solutions product line include (but are not limited to) home appliance, HVAC, medical equipment and non-automotive equipment such as agricultural and commercial equipment and power sports vehicle (including marine and RV) OEM’s and distributors.


With more than 50,000 products ranging from snap action, limit, toggle and pressure switches to position, speed and airflow sensors, Honeywell has a product to meet any industry’s requirements and any company’s needs.

But an impressive product line is only one part. We bring to bear engineering expertise and value-added capabilities no other company offers. While our switch and sensor solutions meet a wide array of basic and complex applications, our custom-engineered solutions offer enhanced precision, repeatability and ruggedness for each industry of our expertise.

Honeywell Brands Include:   Microswitch  –  Clarostat  –  Sensotech  –  Hobbs  –  Fenwall  –  Elmwood  –  Sensysm


Littelfuse products are vital components in applications that use electrical energy, from consumer electronics to vehicles and industrial facilities. Littelfuse offers the industry’s broadest and deepest portfolio of circuit protection products, with growing platforms in power control and sensing. We are expanding into adjacent markets as part of our corporate strategy of accelerated organic growth and strategic acquisitions. These markets include power semiconductors, heavy-duty switches, magnetic, optical, electromechanical, and temperature sensors; and products that provide safe control and distribution of electrical power.

Littelfuse Brands Include:     Hamlin  –  Cole Hersee  –  Symcom/SSAC  –  Teccor  –  U.S. Sensor – IXYS