IEC 61537 is the internationally recognized benchmark for metal cable tray systems. It applies to cable trays made of steel, stainless steel, aluminum, or other metallic materials. The standard ensures these systems can handle the physical and electrical loads they're exposed to. association representing the major electrical equipment manufac-turers in the U. The Cable Tray ng standards, performance standards, test standards and application in this document have been tested extens ompetent professional en completely installed, without damage either to conductors or. us-trations without notice. For proper installation, design, and maintenance, adherence to international standards is essential. foot manufacturing facility in Port Coquitlam, B. and are 100% Canadian owned and operated. Our professional, seasoned sales staf take pride in the quality of the workmanship from conception to finished. important notice: The information herein has been carefully checked for accuracy and is believed to be correct and current. no warranty, either expressed or implied, is made as to either its applicability to or its compatability with specific requirements of this information, nor for damages.