I.S. EN 60898:1992

Foreword
Preface
Clause
1. General
2. Definitions
3. Classification
4. Characteristics of circuit-breakers
5. Marking and other product information
6. Standard conditions for operation in service
7. Requirements for construction and operation
8. Tests
   8.1 Type tests and routine tests
   8.2 Test conditions
   8.3 Indelibility of marking
   8.4 Reliability of screws, current-carrying parts and
        connections
   8.5 Reliability of terminals for external conductors
   8.6 Protection against electric shock
   8.7 Dielectric properties
   8.8 Temperature rise and power loss
   8.9 28-day test
   8.10 Tripping characteristics
   8.11 Mechanical and electrical endurance
   8.12 Short-circuit
   8.13 Resistance to mechanical shock and impact
   8.14 Resistance to heat
   8.15 Resistance to abnormal heat and to fire
   8.16 Resistance to rusting
Figures
Annexes
A. Determination of short-circuit power factor
B. Determination of clearances and creepage distances
C. Test sequences and number of samples to be submitted
    for certification purposes
D. Coordination of circuit-breakers with separate fuses
    associated in the same circuit
E. Special requirements for auxiliary circuits for
    safety extra-low voltage
F. Examples of terminals
G. Void
H. Arrangement for the detection of the emission of
    ionized gases during short-circuit tests
ZA. Classification of circuit-breakers into energy
    limiting classes
ZB. Guide for the selection of circuit breakers with
    reference to their rated voltage

Applies to a.c. air-break circuit-breakers for operation at 50 Hz or 60 Hz, having a rated voltage not exceeding 440 V, a rated current not exceeding 125 A and rated short-circuit capacity not exceeding 25 000 A. These circuit-breakers are intended for the protection against overcurrents of wiring installations of buildings and similar applications. They are designed for use by uninstructed people and for not being maintained. Also applies to circuit-breakers having more than one rated current, provided that the means for changing from one discrete rating to another is not accessible in normal service and that the rating cannot be changed without the use of a tool.