IEC 60884-2-6:2025

Overview

IEC 60884-2-6:2025 - Plugs and socket‑outlets for household and similar purposes - Part 2‑6 - specifies particular requirements for switched socket‑outlets with interlock for fixed electrical installations. It applies to AC devices (above 50 V up to 440 V) with rated currents up to 32 A (note: 16 A max where screwless terminals are used). This second edition (2025) replaces the 1997 edition and aligns the requirements with IEC 60884‑1 (fourth edition) to modernize safety, testing and marking requirements for interlocked switched socket‑outlets.

Key topics and technical requirements

• Scope and ratings: Covers switched socket‑outlets with interlock for household and similar purposes, suitable for indoor or outdoor fixed installations; excludes industrial, EV and SELV-specific interlocked outlets.
• Interlock definition: Devices (electrical, electronic, mechanical or combined) that prevent pins/contacts from becoming live before proper engagement and prevent withdrawal while live.
• Construction and components: Combines socket‑outlets per IEC 60884‑1 with switches per IEC 60669‑1 and/or IEC 60669‑2‑1 supplied as a complete accessory.
• Terminal and connection limits: Rated current limit of 16 A for fixed accessories with screwless terminals.
• Environmental/temperature envelopes: Accessories suitable for normal ambient ≤25 °C (occasional 35 °C); plugs/socket‑outlets suitable up to 40 °C with 24‑h average ≤35 °C and a lower limit of −5 °C.
• Safety and testing: Detailed clauses on protection against electric shock, earthing provisions, insulation resistance, dielectric strength, temperature rise, breaking capacity, mechanical strength, ingress protection and EMC/EMF requirements. Annexes include routine factory tests and high‑load (HL) test provisions.

Practical applications

• Designing and certifying switched socket‑outlets with interlock for residential, commercial and similar fixed installations.
• Manufacturers preparing product technical files, type testing and compliance documentation for safety approvals and market access.
• Test laboratories applying the standardized test methods for interlocked outlets (mechanical, electrical, environmental).
• Installers and specifiers selecting compliant socket‑outlets for applications requiring enhanced safety interlocks (e.g., outdoor sockets, communal spaces).

Who should use this standard

• Electrical accessory manufacturers and R&D teams
• Certification bodies and test laboratories
• Product safety engineers and compliance managers
• Electrical contractors and specifiers requiring conformity to IEC interlock requirements

Related standards

• IEC 60884‑1:2022 - General requirements for plugs and socket‑outlets
• IEC 60669‑1 and IEC 60669‑2‑1 - Switches for household and similar fixed installations
• IEC 60670 - Mounting boxes (general mounting guidance)
• Note: IEC 60884‑2‑6 may be used as guidance for devices incorporating other protective devices (e.g., IEC 60898, IEC 61008, IEC 61009), though these are not directly covered.

Keywords: IEC 60884-2-6:2025, switched socket-outlets, interlock, fixed electrical installations, socket-outlet standards, earthing contact, rated current, screwless terminals.