EN 60335-2-74:2003

Overview

EN 60335-2-74:2003 (CLC) is a European safety standard that specifies particular requirements for portable electric immersion heaters used for household and similar purposes. The standard applies to portable immersion heaters with a rated voltage not exceeding 250 V and covers appliances intended for use by laymen in homes, shops, light industry and on farms. This part of the EN 60335 series supplements the general safety requirements for household electrical appliances and focuses on hazards and design aspects unique to immersion heaters.

Key Topics

The standard addresses practical safety concerns specific to portable immersion heaters. Key topics typically covered include:

• Electrical safety and protection against electric shock for appliances rated up to 250 V
• Thermal safety measures to prevent overheating or ignition when heating liquids
• Safe construction and materials to withstand immersion, corrosion and mechanical stress
• Insulation, earthing and protective circuitry appropriate for portable heater designs
• Marking and user instructions so that lay users understand safe operation, limitations and hazards
• Performance and reliability tests that simulate normal and fault conditions to verify safety

Note: EN 60335-2-74 provides particular requirements that work together with the general provisions of the EN 60335 series to ensure comprehensive safety verification for portable immersion heaters.

Applications

EN 60335-2-74 is essential for stakeholders involved in the design, manufacture, testing and procurement of portable immersion heaters:

• Manufacturers and product designers use the standard to design compliant, safe immersion heaters and to prepare technical files for conformity assessment.
• Test laboratories and certification bodies apply the standard when performing safety testing and issuing approvals or CE marking evidence.
• Compliance engineers and safety managers reference it for risk assessments, regulatory compliance and quality control.
• Buyers, retailers and specifiers use the standard to set procurement requirements and ensure safe products for consumers and non-domestic users (shops, farms, light industry).

Related Standards

• EN 60335 family (general safety requirements for household and similar electrical appliances) - EN 60335-2-74 supplements the general requirements.
• National adoptions: The document is published as SIST EN 60335-2-74:2003 in Slovenia (Slovenski standard).

By following EN 60335-2-74:2003, stakeholders ensure that portable immersion heaters meet recognized safety benchmarks for household and similar applications, reduce electrical and thermal hazards, and demonstrate compliance with European safety expectations.