Reliability is the No. 1 concern in the world of heavy industrial machinery. Whether operating in a steel mill, chemical processing plant or automated logistics hub, the systems that power and control machines must be engineered to withstand punishing conditions. Heat, oil, abrasion, high electrical loads and electromagnetic interference (EMI) are just a few of the daily challenges.
At the heart of this rugged electrical infrastructure are tray cables—specialized multi-conductor cables that carry both power and control signals through cable trays, conduits or directly buried routes. This blog explores how tray cables solve the physical and electrical challenges that are routine in demanding heavy-duty environments.
What Are Tray Cables?
Tray cables are multi-conductor electrical cables specifically designed for use in cable trays, ducts and industrial control wiring. Engineered for high-performance applications, they’re available in a variety of configurations to serve both power and data transmission needs.
Tray cables are built to meet strict industry standards. UL Type TC (tray cable) are approved for use in cable trays and often for direct burial. TC-ER (tray cable-exposed run) are rated for use without conduit in exposed runs up to six feet. MC (metal-clad) are typically used in areas requiring metal armor for added protection. PLTC (power-limited tray cable) are suitable for low-energy control circuits and communications.
Compliance with NEC Article 336 ensures that tray cables meet safety and performance requirements in industrial settings. They’re available shielded or unshielded, with various jacket materials such as PVC for general applications, PUR for resistance to abrasion and chemicals, and the highly flexible and oil-resistant TPE.
Why Tray Cables Excel in Heavy-Duty Applications
Tray cables are purpose-built to endure demanding conditions. Their jackets and insulation materials resist abrasion, sunlight, oil, chemicals and even moisture ingress. Whether installed in a fixed tray or routed flexibly along moving machinery, they maintain structural and electrical integrity.
When specified with a TC-ER rating, tray cables can often be installed without the need for conduit in exposed runs—streamlining labor and materials. This flexibility makes them ideal for both new construction and retrofits. Certain types are also approved for use in conduits and even direct burial, eliminating the need for extra protective sheathing.
Furthermore, tray cables often combine power and control conductors within a single sheath. This reduces wiring complexity, minimizes cable tray congestion and simplifies maintenance. A single tray cable might contain conductors for motor power, brake control and sensor feedback—eliminating the need to run multiple separate lines.
Plus, UL and NEC compliance ensures tray cables are suitable for use in regulated industrial zones, including areas prone to fire hazards or chemical exposure. Flame-retardant and halogen-free jacket options help mitigate the spread of fire and the release of toxic gases, protecting both people and equipment.
Tray cables are a rugged, versatile solution for powering and controlling heavy machinery. Their ability to combine power and control conductors, simplify installation and withstand aggressive environmental conditions makes them ideal for industrial applications. Built to comply with UL and NEC standards, they deliver long-lasting performance in harsh settings ranging from production lines to outdoor pumping stations.
L-com carries a wide selection of industrial tray cables German-engineered by TKD Kabel. We’ll fill your orders fast, with same-day shipping on all qualified, in-stock, online orders received Monday through Friday before 5 p.m. EST.
For more info about TKD cables, please contact Eileen Harvey via email at Eharvey@infiniteelectronics.com or submit this form.
