# Strut Channel 41x41mm URL: https://www.chinneelectric.com/products-types/strut-channel/strut-channel-41x41mm/ Brand: Chinne Electric ## Summary Chinne Electric Strut Channel 41x21mm. Available in hot-dip galvanized, fire-retardant powder coated, and standard powder coated finishes. Perforated design for heavy or medium-duty use.. Product Brief. ## Key facts - Standards: IEC 61537 - Corrosion protection & aesthetics - Fire-resistant, insulated & circuit-safe - Heavy-duty corrosion protection, weather resistance ## FAQ ### What are the exact dimensions and material thickness of the 41x41mm strut channel? The Chinne Electric strut channel profile measures 41 mm in height by 21 mm in width, conforming to the dimensional requirements of IEC 61537. The standard material thickness is 2.0 mm, while a 2.5 mm gauge is available for heavy-duty configurations requiring enhanced load capacity. Standard lengths are supplied at 3 000 mm, with custom lengths available upon request. The channel features elongated slots measuring 14 mm by 28 mm, spaced at 50 mm intervals along the continuous slotted design. ### How does the 41x21mm shallow strut channel differ from a standard 41x41mm profile? The 41x21mm shallow strut channel is a cold-formed C-channel with half the depth of a standard 41x41mm profile, specifically engineered for low-clearance ceiling runs, wall-mounted supports, and restricted-depth mechanical and electrical installations. Despite its reduced depth, it remains fully compatible with standard 41 mm strut nuts, brackets, and support accessories. The continuous slotted design with inturned lips enables adjustable, bolt-in-place fixing along the entire length, making it suitable for mounting cable trays, conduits, pipes, ductwork, and equipment brackets in space-constrained environments. ### What international standards does the 41x21mm slotted strut channel comply with? This strut channel conforms to the dimensional and performance requirements specified in IEC 61537, the international standard for cable tray systems and cable ladder systems. Additionally, the product references BS 6946, the British Standard for metal channel support systems. Dimensional tolerances, material grades, and mechanical load data are verified through type testing conducted at accredited third-party laboratories, ensuring reliable performance in building wiring, industrial equipment, and commercial installations. ### What applications is the shallow 41x21mm strut channel designed for? The shallow-profile strut channel is designed for light-to-medium-duty mechanical, electrical, and plumbing (MEP) support applications where mounting depth is limited. Primary uses include cable containment systems, conduit and pipe supports, ductwork mounting, and equipment bracket installation in low-clearance ceiling voids and wall-mounted configurations. It is suitable for building wiring, industrial equipment setups, and commercial installations that require dependable structural support and compliance with international standards such as IEC 61537. ### Is the 41x21mm strut channel compatible with standard 41mm channel nuts and fittings? Yes, the 41x21mm strut channel maintains full compatibility with standard 41 mm strut nuts, brackets, and support accessories. The continuous slotted design with inturned lips allows for adjustable, bolt-in-place fixing along the full length of the channel. This interoperability ensures that installers can utilize existing 41 mm channel nuts and fittings without requiring specialized components, streamlining procurement and installation across projects involving cable tray supports, conduit mounting, and modular framing systems. ## Content Technical Specifications The Chinne Electric 41×21 mm strut channel conforms to the dimensional and performance requirements of IEC 61537. Dimensional tolerances, material grades, and mechanical load data are verified by type testing at accredited third-party laboratories. Profile dimensions: 41 mm (height) × 21 mm (width) Material thickness: 2.0 mm (standard); 2.5 mm available for heavy-duty configurations Standard length: 3 000 mm (custom lengths on request) Slot dimensions: 14 mm × 28 mm elongated slots at 50 mm longitudinal pitch Base material: DD11 mild steel per EN 10111, or DX51D+Z for continuously hot-dip coated substrate Finish options: Hot-dip galvanized to EN ISO 1461 (minimum coating 55 µm, Fe/Zn13 per IEC 61537 Table A.1) Fire-retardant polyester powder coating, 80–120 µm, self-extinguishing per IEC 60695-11-10 Class V-0 Standard polyester powder coating, 60–100 µm, RAL 9005 (black) or RAL 7035 (light grey) Perforation type: continuous slotted, push-through design compatible with M8–M12 spring channel nuts Yield strength (base steel): 235 MPa minimum (typical 250–280 MPa) Mass per metre: 1.85 kg/m (2.0 mm thickness); 2.30 kg/m (2.5 mm thickness) Beam load capacity (simply supported, L=1 m): 4.2 kN uniformly distributed load at deflection L/200 (2.0 mm profile) Packaging: 10 pieces per bundle, strapped with edge protectors and moisture-barrier wrap Applications This 41×21 mm profile is specified for medium-duty cable management and mechanical support structures where dimensional consistency and predictable load behaviour are required. Typical installations include: Building wiring support systems in commercial and residential risers, corridors, and plant rooms Industrial equipment frameworks, machine-level cable trays, and instrumentation mounting rails Commercial electrical infrastructure, including distribution board back frames and busbar support bracketry HVAC control panel substructures and sensor mounting rails in technical building services Perforated variants simplify bolted connections without field drilling, maintaining the integrity of the corrosion protection system Compliance and Standards IEC 61537: Cable tray systems and cable ladder systems — the product is designed, tested, and marked in accordance with this standard. Mechanical load classification and coating durability are declared per Annex A and Annex B of IEC 61537. EN ISO 1461: Hot-dip galvanized coatings on fabricated steel articles — applicable to the HDG finish variant; minimum local coating thickness of 55 µm on steel 2.0–6.0 mm thick. IEC 60695-11-10: Fire hazard testing — the fire-retardant powder coat formulation meets V-0 criteria for vertical flame spread and afterflame time on the channel surface. RoHS (EU 2011/65/EU, amended): All powder coat finishes are free of restricted substances above threshold limits. Declarations are available on request. Frequently Asked Questions What is the load classification of the 41×21 mm strut channel under IEC 61537? Under IEC 61537, the product achieves a mechanical load classification that corresponds to a safe working load of 4.2 kN per metre span at a deflection limit of L/200, when simply supported with uniform loading. The declared classification is stamped on the channel web at 1 000 mm intervals per marking requirements of IEC 61537 Clause 7. For specific span and support conditions, refer to the manufacturer's load tables or request project-specific calculations. How does the fire-retardant powder coating differ from standard powder coating in operational terms? The fire-retardant variant uses an intumescent-modified polyester formulation tested to IEC 60695-11-10 and achieves V-0 classification — meaning the coating self-extinguishes within 10 seconds after removal of the flame source and does not produce flaming drips. Standard powder coating (non-fire-retardant) is tested for adhesion and UV stability but carries no flame-spread classification. The fire-retardant option is specified for enclosed building escape routes, tunnels, and installations where surface flame propagation must be limited. Coating adhesion and corrosion resistance values are equivalent between the two variants; the difference is exclusively in reaction-to-fire performance. Can the 41×21 mm channel be used in outdoor or coastal environments? Yes, when specified with the hot-dip galvanized finish to EN ISO 1461. With a minimum average coating thickness of 55 µm (Fe/Zn13), this variant is suitable for C3 (medium) and C4 (high) corrosivity categories per ISO 12944-2, covering most urban, industrial, and coastal atmospheres. For C5-M (severe marine) environments, supplementary duplex coating or stainless steel alternatives should be evaluated. The standard powder-coated variant is rated for C1–C2 interior conditions only and must not be used outdoors. All field-cut ends must be treated with zinc-rich repair compound (minimum 93% zinc in dry film) to maintain the corrosion protection system's continuity.