Cable tray hangers and supports must comply with IEC 61537 and DIN standards, ensuring proper load capacity, spacing, material strength, and installation for safe and durable cable management.

Key Standards and Guidelines

IEC 61537 is the internationally recognized standard for metal cable tray systems, covering construction, testing, and performance requirements. It ensures that cable trays and their supports can withstand mechanical loads, environmental conditions, and electrical continuity requirements . In Europe, DIN 4102 Part 12 specifies additional requirements for fire safety, material thickness, tray widths, and maximum permissible cable weight .

Materials and Corrosion Protection

Cable tray supports are typically made from steel, stainless steel, or aluminum, with various galvanization or coating options to enhance corrosion resistance . Stainless steel grades such as AISI 316L are used in highly corrosive environments, while pre-galvanized or hot-dip galvanized steel is common for general industrial applications .

Support Types and Installation

Cable trays can be mounted using:

• Cantilever brackets (KTA, KTUG) for wall or ceiling mounting
• Pendant brackets (HUF, HDUF, TKS) for ceiling suspension
• Threaded rod suspensions (M10 rods) for direct ceiling attachment
• U-profiles and head plates for flexible on-site adjustments Supports must be installed near joints and changes in direction (≤150 mm) to maintain structural integrity. Inclined trays can be attached using specialized fastenings like KLAF 6 .

Load Capacity and Spacing

Standard support systems define:

• Maximum permissible cable dead weight
• Maximum fastening spacing
• Tray widths (commonly 100–300 mm for RS 60 series)
• Rail height (typically 60 mm for RS 60 trays)
• Coupler and bolt specifications for secure attachment These parameters ensure that the cable tray system can safely carry the intended cable load without deformation or failure.

Fire Safety and Circuit Integrity

Supports and hangers must comply with fire safety regulations, maintaining circuit integrity during a fire. This includes using verified fasteners and brackets that meet general test certificates from building authorities .

Summary

To ensure safe and reliable cable management:

• Follow IEC 61537 for mechanical and electrical performance
• Adhere to DIN 4102 Part 12 for fire safety and material specifications
• Use appropriate materials and corrosion protection
• Install supports according to specified spacing, load, and bracket types
• Ensure joint and directional changes are properly supported These standards and practices guarantee that cable trays and their hangers provide long-term durability, safety, and compliance in industrial, commercial, and utility installations .