ISO 1033:1975
(Main)Aircraft - Dimensions for general purpose push-pull three-pole circuit-breakers
Aircraft - Dimensions for general purpose push-pull three-pole circuit-breakers
Specifies the dimensions of breakers of ratings up to and including 35 A. The dimensions of the breakers and of the part projecting through the mounting panel, shall be as shown in figure 1. The holes in the panel for mounting the breaker shall be as shown in figure 2. The small panel hole may be used to prevent rotation of the breaker.
Aéronefs — Dimensions des disjoncteurs tripolaires à bouton-poussoir d'usage courant
General Information
- Status
- Published
- Publication Date
- 30-Nov-1975
- Technical Committee
- ISO/TC 20/SC 1 - Aerospace electrical requirements
- Drafting Committee
- ISO/TC 20/SC 1 - Aerospace electrical requirements
- Current Stage
- 9092 - International Standard to be revised
- Start Date
- 18-Jul-2025
- Completion Date
- 13-Dec-2025
Overview
ISO 1033:1975 is an important international standard developed by the International Organization for Standardization (ISO) that specifies the dimensions for general purpose push-pull three-pole circuit-breakers used in aircraft. This standard applies to circuit-breakers with current ratings up to and including 35 A. It ensures uniformity and interchangeability of these critical safety components, facilitating consistent design, manufacturing, and maintenance processes within the aerospace industry.
The document provides detailed measurements of the circuit-breakers and the related mounting panel cutouts, aiming to standardize how these circuit-breakers fit and operate within aircraft systems. This standard is essential for aircraft equipment designers, manufacturers, and maintenance personnel who require precise and consistent specifications for reliable electrical protection devices.
Key Topics
Scope and Field of Application
The standard targets push-pull three-pole circuit-breakers designed for aircraft applications, focusing on ratings up to 35 amperes. It highlights the importance of verifying that the circuit-breaker’s rupturing capacity is adequate for the specific electrical environment where it will be used.Dimensional Specifications
ISO 1033 details exact dimensions for the circuit-breakers, including the overall size, the portion that projects through the mounting panel, and the thread type for fixing the breaker to the panel.- Maximum dimensions are specified in millimeters and inches for various aspects (e.g., height, width, panel cutout holes).
- The circuit-breaker case includes a male thread (12 mm diameter, 1 mm pitch or equivalent) at the center of the front face for secure mounting.
Panel Mounting and Hole Configuration
The standard provides precise guidelines for the holes in aircraft panels to mount these circuit-breakers safely and securely. A small panel hole may serve as an anti-rotation feature to prevent unintended movement of the breaker after installation.
Applications
ISO 1033:1975 is primarily applied in the aerospace industry for:
Aircraft Electrical Systems
Ensuring that push-pull circuit-breakers conforming to standardized dimensions can be easily integrated and replaced in aircraft electrical panels without modification.Aircraft Maintenance and Repairs
Providing maintenance engineers with dimensional references to source compatible circuit-breakers and panels, improving efficiency and safety during aircraft servicing.Component Manufacturing
Guiding manufacturers in producing circuit-breakers that meet global aerospace dimensional standards, fostering interoperability and reducing design discrepancies.System Safety and Reliability
Enabling designers to select circuit-breakers that fit specified mounting requirements, ensuring secure installation and preventing electrical failures caused by improper fitting or panel deformation.
Related Standards
When working with ISO 1033:1975, it is beneficial to consider associated standards in aircraft electrical and safety equipment, including:
ISO/TC 20 Series: Covers various aircraft equipment and components standards developed by the Technical Committee 20, including electrical installations.
Electrical Circuit Protection Standards: Other international or national standards defining characteristics such as breaking capacity, electrical performance, and environmental resilience of circuit-breakers in aviation.
Panel and Mounting Standards: Specifications dealing with aircraft panel construction, hole patterning, and fastening methods to ensure compatibility with standard circuit-breaker dimensions.
ISO 1033:1975 plays a key role in standardizing aircraft push-pull circuit-breaker dimensions, promoting compatibility, safety, and reliability across the aerospace industry. Adhering to this standard ensures that critical electrical protection devices are correctly sized and mounted, which is vital for the safe operation of modern aircraft electrical systems.
ISO 1033:1975 - Aircraft -- Dimensions for general purpose push-pull three-pole circuit-breakers
ISO 1033:1975 - Aéronefs -- Dimensions des disjoncteurs tripolaires a bouton-poussoir d'usage courant
ISO 1033:1975 - Aéronefs -- Dimensions des disjoncteurs tripolaires a bouton-poussoir d'usage courant
Frequently Asked Questions
ISO 1033:1975 is a standard published by the International Organization for Standardization (ISO). Its full title is "Aircraft - Dimensions for general purpose push-pull three-pole circuit-breakers". This standard covers: Specifies the dimensions of breakers of ratings up to and including 35 A. The dimensions of the breakers and of the part projecting through the mounting panel, shall be as shown in figure 1. The holes in the panel for mounting the breaker shall be as shown in figure 2. The small panel hole may be used to prevent rotation of the breaker.
Specifies the dimensions of breakers of ratings up to and including 35 A. The dimensions of the breakers and of the part projecting through the mounting panel, shall be as shown in figure 1. The holes in the panel for mounting the breaker shall be as shown in figure 2. The small panel hole may be used to prevent rotation of the breaker.
ISO 1033:1975 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.
ISO 1033:1975 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)
INTERNATIONAL STANDARD
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION l MtX~~YHAPO~HAA OPI-AHM3AUM5i l-IO CTAHAAPTM3ALMM.ORGANISATION INTERNATIONALE DE NORMALISATION
Aircraft - Dimensions for general purpose push-pull
three-pole circuit-breakers
Ahnefs - Dimensions des disjoncteurs tripolaires i bouton-poussoir d ’usage couran t
First edition - 1975-12-15
UDC 629.7.064.5 : 621.316.5 Ref. No. ISO 1033-1975 (E)
Descriptors : aircraft, aircraft equipment, circuit breakers, dimensions.
Price based on 1 page
FOREWORD
ISO (the International Organization for Standardization) is a worldwide federation
of national Standards institutes (ISO Member Bodies). The work of developing
International Standards is carried out through ISO Technical Committees. Every
Member Body interested in a subject for which a Technical Committee has been set
up has the right to be represented on that Committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the Technical Committees are circulated
to the Member Bodies for approval before their acceptance as International
Standards by the ISO Council.
Prior to 1972, the results of the work of the Technical Committees were published
as ISO Recommendations; these documents are now in the process of being
transformed into International Standards. As part of this process, Technical
Committee ISO/TC 20 has reviewed ISO Recommendation R 1033 and found it
technically suitable for transformation. International Standard ISO 1033 therefore
replaces ISO Recommendation R 1033-1969 to which it is technically identical.
ISO Recommendation R 1033 was approved by the Member Bodies of the
following countries :
Switzerland
Belgium Israel
Thailand
Canada Italy
Netherlands United Kingdom
Czechoslovakia
Egypt, Arab Rep. of Portugal U.S.S. R.
Spain
France
following countries expressed disappr
...
NORME INTERNATIONALE
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION l MEXKAYHAPOAHAII OPI-AHM3AUMII rIO CTAHAAPTM3ALWi *ORGANISATION INTERNATIONALE DE NORMALISATION
Aéronefs - Dimensions des disjoncteurs tripolaires à
bouton-poussoir d’usage courant
Aircraft - Dimensions for general purpose push-pull three-pole circuit-breakers
Première édition - 1975 -12 -15
CDU 629.7.064.5 : 621.316.5
Réf. no : ISO 1033-1975 (F)
Descripteurs : aéronef, matériel d’aéronef, disjoncteur, dimension.
U
CO
Prix basé sur 1 page
AVANT-PROPOS
L’ISO (Organisation Internationale de Normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (Comités Membres GO). L’élaboration de
Normes Internationales est confiée aux Comités Techniques ISO. Chaque Comité
Membre intéressé par une étude a le droit de faire partie du Comité Technique
correspondant. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec I’ISO, participent également aux travaux.
Les Projets de Normes Internationales adoptés par les Comités Techniques sont
soumis aux Comités Membres pour approbation, avant leur acceptation comme
Normes Internationales par le Conseil de I’ISO.
Avant 1972, les résultats des travaux des Comités Techniques étaient publiés
comme Recommandations ISO; maintenant, ces documents sont en cours de
transformation en Normes Internationales. Compte tenu de cette procédure, le
Comité Technique ISO/TC 20 a examiné la Recommandation ISO/R 1033 et est
d’avis qu’elle peut, du point de vue technique, être transformée en Norme
Internationale. La présente Norme Internationale remplace donc la
Recommandation lSO/R 1033-I 969 à laquelle elle est techniquement identique.
La Recommandation ISO/R 1033 avait été approuvée par les Comités Membres des
pays suivants :
Belgique Israël
Suisse
Canada Italie Tchécoslovaquie
Égypte, Rép. arabe d’ Pays-Bas Thaïlande
Espagne Portugal U.R.S.S.
France Royaume-Uni
Les Comités Membres des pays suivants avaient désapprouvé la Recommandation
pour des raisons techniques :
Al lemagne
U.S.A.
Le Comité Membre du pay
...
NORME INTERNATIONALE
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION l MEXKAYHAPOAHAII OPI-AHM3AUMII rIO CTAHAAPTM3ALWi *ORGANISATION INTERNATIONALE DE NORMALISATION
Aéronefs - Dimensions des disjoncteurs tripolaires à
bouton-poussoir d’usage courant
Aircraft - Dimensions for general purpose push-pull three-pole circuit-breakers
Première édition - 1975 -12 -15
CDU 629.7.064.5 : 621.316.5
Réf. no : ISO 1033-1975 (F)
Descripteurs : aéronef, matériel d’aéronef, disjoncteur, dimension.
U
CO
Prix basé sur 1 page
AVANT-PROPOS
L’ISO (Organisation Internationale de Normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (Comités Membres GO). L’élaboration de
Normes Internationales est confiée aux Comités Techniques ISO. Chaque Comité
Membre intéressé par une étude a le droit de faire partie du Comité Technique
correspondant. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec I’ISO, participent également aux travaux.
Les Projets de Normes Internationales adoptés par les Comités Techniques sont
soumis aux Comités Membres pour approbation, avant leur acceptation comme
Normes Internationales par le Conseil de I’ISO.
Avant 1972, les résultats des travaux des Comités Techniques étaient publiés
comme Recommandations ISO; maintenant, ces documents sont en cours de
transformation en Normes Internationales. Compte tenu de cette procédure, le
Comité Technique ISO/TC 20 a examiné la Recommandation ISO/R 1033 et est
d’avis qu’elle peut, du point de vue technique, être transformée en Norme
Internationale. La présente Norme Internationale remplace donc la
Recommandation lSO/R 1033-I 969 à laquelle elle est techniquement identique.
La Recommandation ISO/R 1033 avait été approuvée par les Comités Membres des
pays suivants :
Belgique Israël
Suisse
Canada Italie Tchécoslovaquie
Égypte, Rép. arabe d’ Pays-Bas Thaïlande
Espagne Portugal U.R.S.S.
France Royaume-Uni
Les Comités Membres des pays suivants avaient désapprouvé la Recommandation
pour des raisons techniques :
Al lemagne
U.S.A.
Le Comité Membre du pay
...
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