Unrelenting Focus on Quality


Resistors are put into extremely harsh environments (rail cars, diesel trucks, power generators, etc.) and therefore must be manufactured up to extremely high quality standards.

In addition to rigorous internal quality standards and in-house quality control experts, I-Gard was one of the first resistor manufacturers certified to ISO 9001:2000, and the only resistor manufacturer to receive the “Canada Award for Business Excellence.”

In addition to ISO standards for manufacturing quality, there are a number of product specific guidelines and application standards from CSA, UL and IEEE covering power resistors and ground fault protection products as listed below.

Our focus on quality and testing is exemplified by our CSA-approved test facility that permits I-Gard to develop and verify prototype resistors and relays and is reinforced through our product category certifications.

All of our resistors elements and protective relays are both CSA certified and UL recognized and listed.

CSA International

  • C22.1Canadian Electrical Code
  • C22. No. 14Industrial Control Equipment
  • C22.2 No. 295Neutral Grounding Devices
  • C22.2 No. 144Ground Fault Circuit Interrupters
  • C22.1 M421-00Use of Electricity in Mines
  • M421-00Use of Electricity in Mines
  • C22.2 NO. 94.1Enclosures for Electrical Equipment, Non-Environmental Considerations
  • Z462Workplace Electrical Safety
  • C22.2 NO. 0.12Wiring Space and Wire Bending Space in Enclosures for Equipment Rated 750 V or Less
  • C22.2 NO. 0.4Bonding of Electrical Equipment

Underwriters Laboratories Inc.

  • UL 508Industrial Control Equipment
  • UL 347High Voltage Industrial Control Equipment
  • UL 508CPower Conversion Equipment
  • UL 50Enclosures for Electrical Equipment
  • UL 943Ground Fault Circuit Interrupters
  • UL 891Switchboards
  • UL 1022Standard for Line Isolation Monitors
  • UL 1053Standard for Ground-Fault Sensing and Relaying Equipment
  • UL 489Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures
  • UL 67Standard for Panelboard

National Fire Protection Association

  • NFPA 70National Electrical Code
  • NFPA 70EStandard for Electrical Safety in the Workplace

IEEE Institute of Electrical & Electronics Engineers

  • IEEE Std C57.32IEEE Standard for Requirements, Terminology, and Test Procedures for Neutral Grounding Devices
  • IEEE Std 141Recommended Practice for Electric Power Distribution for Industrial Plants
  • IEEE Std 142Recommended Practice for Grounding of Industrial and Commercial Power Systems
  • IEEE Std 241Recommended Practice of Electric Power Systems in Commercial Buildings
  • IEEE Std 242Recommended Practice for Protection and Coordination of Industrial and Commercial Power Systems
  • IEEE 30003000 Series of Standards