# Strut Channel 41x21mm URL: https://www.chinneelectric.com/products-types/strut-channel/strut-channel-41x21mm/ 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 is Strut Channel 41x21mm? Chinne Electric Strut Channel 41x21mm is engineered for reliable performance in commercial and industrial installations, with documentation aligned to applicable international standards. ### Which standards apply to Strut Channel 41x21mm? Refer to the product technical specifications for cited standards such as IEC, GB/T, or JB/T requirements relevant to cable systems and installation practice. ### Where is Strut Channel 41x21mm typically used? Typical applications include building electrical systems, industrial plants, infrastructure projects, and MEP installations requiring organized cable routing and long-term maintainability. ### How do I select the right Strut Channel 41x21mm specification? Selection should consider load, environment, corrosion protection, fire performance, and installation constraints. Contact Chinne Electric for project-specific guidance. ### Does Chinne Electric provide custom solutions for Strut Channel 41x21mm? Chinne Electric supports customized dimensions, finishes, and project documentation for export and compliance requirements. ## 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.