RC filter – Single Phase

Spark quenchers (SPQ) are Resistor-Capacitor combination circuits connected in series. Both elements are designed to withstand high energy surges and protect the connected equipment.

Spark Quenchers are used in electrical applications to suppress back EMF generated in inductive load and also used in protection of Solid State switches. They are installed across the load or across the output contacts switching the load. This reduces occurrence of arcing and noise generation in relay and switch contacts.

What EMIS Offers

High reliability, MIL-grade solutions from EMIS not only provide one of the smallest footprints available in the market, but also the added flexibility of widely ranging interconnect options for ease of integration into existing systems.Comprehensive Testing and consultancy services can also be availed to meet various industry and military standards.

  • Single phase Spark Quenchers
  • Lightning arrestors
  • RF protectors – for coaxial cable lines and signal input port equipment
  • Single and multi-socket power guards with surge protection

Mounting, Construction, Ratings

Note: Customer specific solutions are also delivered on request, apart from filters and shielding solutions from the product catalog.
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  • Voltage Range


  • Phase


  • Application

    Electronic Equipments

Product Specification


  • Electronic Equipment
  • Industrial Automation and machine tools
  • Variable Frequency Drives and various adjustable speed drive systems
  • Home appliances, air conditioners