SIST EN 3773-003:2002
(Main)Aerospace series - Circuit breakers, single-pole, temperature compensated, rated currents 1 A to 25 A, switching capacity 65 /n/1000 A max. - Part 003: Metric thread terminals - Product standard
Aerospace series - Circuit breakers, single-pole, temperature compensated, rated currents 1 A to 25 A, switching capacity 65 /n/1000 A max. - Part 003: Metric thread terminals - Product standard
This standard specifies the required characteristics for single-pole, temperature compensated circuit breakers, rated currents from 1 A to 25 A, switching capacity 65 In/ 1000 A max., metric thread terminals, for use in aircraft electrical systems, at temperatures between - 55°C and 125°C and at a maximum altitude of Z = 22 000 m. It shall be used together with EN 3773-001. These circuit breakers are intended for use in aircraft with electrical supplies in accordance with EN 2282.
Luft- und Raumfahrt - Schutzschalter, einpolig, temperaturkompensiert, Nennströme von 1 A bis 25 A, Schaltvermögen 65 /n/1000 A max. - Teil 003: Metrisches Klemmengewinde - Produktnorm
Diese Norm legt die Anforderungen an temperaturkompensierte, einpolige Schutzschalter mit Nennströmen von 1 A bis 25 A, Schaltvermögen 65 In/ 1000 A max., mit metrischem Klemmengewinde, für den Einsatz in elektrischen Bordnetzen im Temperaturbereich zwischen - 55°C und 125°C bis zu einer Höhe von Z = 22 000 m fest. Sie ist in Verbindung mit EN 3773-001 anzuwenden. Diese Schutzschalter sind zum Einsatz in Luftfahrzeugen mit elektrischer Stromversorgung nach EN 2282 bestimmt.
Série aérospatiale - Disjoncteurs unipolaires compensés en température, intensités nominales 1 A a 25 A, pouvoir de coupure 65 /n/1000 A max. - Partie 003: Bornes a filetage métrique - Norme de produit
La présente norme spécifie les caractéristiques requises des disjoncteurs unipolaires compensés en température, d'intensités nominales de 1 A à 25 A, pouvoir de coupure 65 In/ 1000 A max., bornes à filetage métrique, utilisés dans les circuits électriques d'aéronefs, à des températures comprises entre - 55°C et 125°C et à une altitude maximale Z = 22 000 m. Elle doit être utilisée conjointement avec EN 3773-001. Ces disjoncteurs sont prévus pour être utilisés avec des alimentations électriques définis par EN 2282.
Aerospace series - Circuit breakers, single-pole, temperature compensated, rated currents 1 A to 25 A, switching capacity 65 /n/1000 A max. - Part 003: Metric thread terminals - Product standard
General Information
- Status
- Published
- Publication Date
- 31-Dec-2001
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Jan-2002
- Due Date
- 01-Jan-2002
- Completion Date
- 01-Jan-2002
Overview
SIST EN 3773-003:2002 is a European standard established by CEN that defines the product requirements for single-pole, temperature compensated circuit breakers used in aerospace applications. These circuit breakers have rated currents ranging from 1 A to 25 A and a maximum switching capacity of 65 In / 1000 A. Designed specifically for aircraft electrical systems, they operate reliably across a wide temperature range from -55°C to +125°C and at altitudes up to 22,000 meters. The standard focuses on circuit breakers equipped with metric thread terminals, ensuring compatibility and secure electrical connections in aerospace environments.
This standard is intended to be applied in conjunction with EN 3773-001 and supports electrical supplies compliant with EN 2282, making it a critical component in the design and certification of aircraft electric protection systems.
Key Topics
- Single-pole Circuit Breakers: Designed for individual circuit protection, allowing isolation and safeguarding of specific electrical pathways within aircraft systems.
- Temperature Compensation: Ensures breaker performance stability under extreme temperature variations common in aerospace conditions.
- Rated Currents 1 A to 25 A: Covers a useful range for various aircraft electrical subsystems requiring protection.
- Switching Capacity: Maximum rated switching capacity of 65 In/1000 A guarantees circuit interruption performance and safety during fault conditions.
- Metric Thread Terminals: Specifies the use of metric threaded connections to standardize installation, reliability, and maintenance processes.
- Environmental Requirements: Qualified for temperatures between -55°C and +125°C and operational altitudes up to 22,000 meters, suitable for commercial and military aircraft.
- System Integration: Must be used alongside EN 3773-001 and is compatible with electrical supplies per EN 2282, facilitating cohesive system design.
Applications
- Aircraft Electrical Systems: EN 3773-003 circuit breakers serve a critical role in safely protecting onboard electrical circuits from overloads and short circuits.
- Commercial Aviation: Ensures compliant and reliable circuit protection for commercial airliners, enhancing passenger safety and reducing system downtime.
- Military Aircraft: Meets stringent aerospace environmental and performance demands for defense aircraft operating in harsh conditions.
- Spacecraft Systems: Suitable for space vehicles and high-altitude platforms requiring robust electrical protection under extreme environmental factors.
- Maintenance and Upgrades: Supports maintenance operations by providing standardized, replaceable components with defined performance characteristics.
- Electrical System Certification: Assists manufacturers and maintenance organizations in meeting regulatory and safety standards for aerospace electrical equipment.
Related Standards
- EN 3773-001: General requirements and testing methods for temperature compensated circuit breakers in aerospace systems.
- EN 2282: Specifies electrical power supplies for aircraft, ensuring electrical systems comply with voltage and current regulations.
- Other Aerospace Circuit Breaker Standards: Coordination with broader aerospace electrical protection standards enhances system interoperability.
- International Aerospace Standards (AS): Aligns with global aerospace standards to facilitate international certification and approval.
- Environmental and Safety Standards: Complements related documentation addressing mechanical, thermal, and electrical safety in aerospace equipment.
By adhering to SIST EN 3773-003:2002, manufacturers and aerospace engineers ensure their circuit breakers meet essential performance, safety, and environmental requirements crucial for reliable operation in modern aircraft electrical systems. The standard’s focus on temperature compensation, rated current ranges, and metric thread terminals optimizes the integration of circuit protection components in demanding aerospace environments.
Frequently Asked Questions
SIST EN 3773-003:2002 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Circuit breakers, single-pole, temperature compensated, rated currents 1 A to 25 A, switching capacity 65 /n/1000 A max. - Part 003: Metric thread terminals - Product standard". This standard covers: This standard specifies the required characteristics for single-pole, temperature compensated circuit breakers, rated currents from 1 A to 25 A, switching capacity 65 In/ 1000 A max., metric thread terminals, for use in aircraft electrical systems, at temperatures between - 55°C and 125°C and at a maximum altitude of Z = 22 000 m. It shall be used together with EN 3773-001. These circuit breakers are intended for use in aircraft with electrical supplies in accordance with EN 2282.
This standard specifies the required characteristics for single-pole, temperature compensated circuit breakers, rated currents from 1 A to 25 A, switching capacity 65 In/ 1000 A max., metric thread terminals, for use in aircraft electrical systems, at temperatures between - 55°C and 125°C and at a maximum altitude of Z = 22 000 m. It shall be used together with EN 3773-001. These circuit breakers are intended for use in aircraft with electrical supplies in accordance with EN 2282.
SIST EN 3773-003:2002 is classified under the following ICS (International Classification for Standards) categories: 49.060 - Aerospace electric equipment and systems. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 3773-003:2002 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Circuit breakers, single-pole, temperature compensated, rated currents 1 A to 25 A, switching capacity 65 /n/1000 A max. - Part 003: Metric thread terminals - Product standardLuft- und Raumfahrt - Schutzschalter, einpolig, temperaturkompensiert, Nennströme von 1 A bis 25 A, Schaltvermögen 65 /n/1000 A max. - Teil 003: Metrisches Klemmengewinde - ProduktnormSérie aérospatiale - Disjoncteurs unipolaires compensés en température, intensités nominales 1 A a 25 A, pouvoir de coupure 65 /n/1
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