EN 3841-202:2004

Overview

EN 3841-202:2004 is a European standard developed by CEN as part of the aerospace series addressing circuit breakers. This standard specifies standardized test methods for verifying the dimensions and masses of circuit breakers used in aerospace applications. It ensures that circuit breakers conform to precise physical specifications, contributing to safety, compatibility, and reliability across aircraft electrical systems. EN 3841-202:2004 is intended to be used together with EN 3841-100, which covers general test methods for circuit breakers.

Key Topics

• Dimensional Verification: Establishes standardized methods for measuring the physical dimensions of circuit breakers, ensuring they meet product specifications.
• Mass Verification: Specifies procedures for accurately determining the mass of each circuit breaker.
• Measurement Precision: Requires the use of standard measuring instruments capable of resolutions of ≤ 0.01 mm for dimensions and ≤ 0.1 g for mass.
• Compliance with Product Standards: Guarantees that the characteristics of circuit breakers are in full compliance with the relevant product and safety standards.
• Test Methodology: Provides clear instructions for executing dimension and mass checks using accepted industry practices.

Applications

EN 3841-202:2004 is directly applicable across the aerospace sector, supporting the manufacturing, testing, and quality assurance processes for electrical equipment. Key applications include:

• Quality Control in Manufacturing: Ensures circuit breaker components are produced to exact size and weight tolerances, fostering consistency and interchangeability.
• Design and Development: Assists engineers and designers in specifying and validating circuit breaker physical requirements at various development stages.
• Procurement and Supplier Management: Provides clear benchmark criteria for suppliers, simplifying specification and acceptance of delivered components.
• Regulatory Compliance: Helps manufacturers meet international certification requirements for aerospace electrical systems by aligning with recognized European standards.
• Maintenance, Repair and Overhaul (MRO): Supports maintenance professionals in verifying the continued conformity of circuit breakers during routine inspections or replacements.

Related Standards

For comprehensive application, EN 3841-202:2004 should be used alongside related standards within the aerospace circuit breaker series:

• EN 3841-100: Aerospace series - Circuit breakers - Test methods - Part 100: General; this document sets out the foundational testing approach for all subsequent parts.
• EN 3841 Series: Covers a range of test methods, including environmental, electrical, and mechanical testing of circuit breakers for aerospace use.
• ICS 49.060: Pertinent classification covering aerospace electrical equipment and systems.

Utilizing EN 3841-202:2004 in conjunction with these related standards ensures holistic validation of circuit breakers, supporting the reliability and safety critical to aerospace operations.

Adopting EN 3841-202:2004 enhances the accuracy and traceability of circuit breaker dimensions and masses in aerospace applications, supporting global industry best practices and regulatory requirements. For organizations involved in the design, production, or operation of aircraft electrical systems, alignment with this standard is essential to achieving compliance, safety, and performance goals.