AS 3111-1994

1 - AS 3111-1994 APPROVAL AND TEST SPECIFICATION - MINIATURE OVERCURRENT CIRCUIT-BREAKERS
4 - PREFACE
6 - 1 SCOPE
6 - 2 APPLICATION
6 - 2.1 General requirements of AS 3100
6 - 2.2 Specific requirements of this Specification
6 - 2.3 Requirements of other specifications
6 - 2.4 Circuit-breakers with earth-leakage features
6 - 3 REFERENCED DOCUMENTS
7 - 4 DEFINITIONS
7 - 4.1 Case
7 - 4.2 Cover
7 - 4.3 Enclosure
7 - 4.4 Enclosure type circuit-breaker
7 - 4.5 Open-mounting type circuit-breaker
7 - 5 RATINGS AND MARKINGS
7 - 5.1 Preferred current ratings
7 - 5.2 Marking
8 - 6 DESIGN
8 - 6.1 Contact position
8 - 6.2 Breaking capacity
9 - 6.3 Overcurrent device sealing and calibration
9 - 6.4 Temperature limits
9 - 6.5 Multi-pole breakers
9 - 6.6 Insulation
9 - 6.7 Case
10 - 6.8 Protection against corrosion
10 - 6.9 Method of operation
10 - 6.10 Mechanical stability
10 - 6.11 Spacing between terminals intended for field wiring
11 - 7 TESTS
11 - 7.1 General
12 - 7.2 Earthing facilities
12 - 7.3 Dielectric tests
13 - 7.4 Mechanical tests
13 - 7.5 Load test
13 - 7.6 Temperature test
14 - 7.7 Performance test
14 - 7.8 Breaking capacity test
15 - 7.9 Additional tests
15 - 7.10 Inspection of circuit-breaker
15 - 7.11 Determination of ignitability and combustion propagation
18 - APPENDIX A - EXAMPLE OF THE APPLICATION OF AS 3111, AS 2184 AND AS 3858 TO OVERCURRENT CIRCUIT-BREAKERS BY ELECTRICAL REGULAT
18 - A1 EXAMPLE OF APPLICATION
18 - A2 ADDITIONAL REQUIREMENTS

Specifies essential safety requirements for approval and test purposes of miniature overcurrent circuit-breakers. It is intended to be read in conjunction with AS 3100.

This Specification applies to miniature overcurrent air-break circuit-breakers, referred to hereinafter as 'circuit- breaker(s)', having the following characteristics:(a) Intended for the prevention of continued overloading of electrical circuit wiring.(b) Have current ratings up to and including 125 A.(c) Have current breaking capacities up to but not including 10 kA.(d) Intended for use at low voltage.A circuit-breaker intended only for the protection of electrical equipment as distinct from circuit wiring, and which is appropriately marked as such, is not within the scope of this Specification.NOTES:1 Voltages and currents referred to in this Specification relate to alternating currents except where otherwise specified and values quoted are r.m.s. values.2 Attention is drawn to AS 2184 and AS 3858 which cover circuit-breakers having breaking capacities above 3 kA.3 In the application of AS 3111, AS 2184 and AS 3858 to overcurrent circuit-breakers, the Electrical Regulatory Authorities have modified, or intend to modify the above Scope and will apply additional conditions for approvals purposes. An example of this is given in Appendix A.

First published as AS C111-1938.
Second edition 1951.
Third edition 1956.
Fourth edition 1968.
Revised and redesignated AS 3111-1974.
Second edition 1980.
Third edition 1983.
Fourth edition 1994.