Gives requirements for 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 a rated short-circuit capacity not exceeding 25000 A.<\/p>\n
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| 1<\/td>\n | BRITISH STANDARD <\/td>\n<\/tr>\n | ||||||
| 2<\/td>\n | Cooperating organizations <\/td>\n<\/tr>\n | ||||||
| 3<\/td>\n | Contents <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | Foreword Foreword to amendment A11 Foreword to amendment A12 <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | Foreword to amendment A13 Foreword to amendment A14 Foreword to amendment A15 Foreword to amendment A16 <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | Foreword to amendment A17 Foreword to amendment A18 Foreword to amendment A19 <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | Contents <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | General Scope Object <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | Definitions Devices switching device mechanical switching device fuse circuit-breaker (mechanical) plug-in circuit-breaker General terms overcurrent overload current short-circuit current main circuit (of a circuit-breaker) control circuit (of a circuit-breaker) auxiliary circuit (of a circuit-breaker) <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | pole (of a circuit-breaker) closed position open position Air temperature operation operating cycle sequence of operation uninterrupted duty <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | routine test Constructional elements main contact arcing contact control contact auxiliary contact release overcurrent release inverse time-delay overcurrent release direct overcurrent release overload release conductive part exposed conductive part <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | terminal screw-type terminal pillar terminal screw terminal stud terminal saddle terminal lug terminal screwless terminal plug-in terminal <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | tapping screw thread-forming tapping screw thread-cutting tapping screw Conditions of operation closing operation opening operation dependent manual operation independent manual operation trip-free circuit-breaker Characteristic quantities rated value <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | prospective current (of a circuit, and with respect to a circuit-breaker) prospective peak current maximum prospective peak current (of an a.c. circuit) short-circuit (making and breaking) capacity breaking current applied voltage Recovery voltage <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | opening time Arcing time break time Joule integral Characteristic of a circuit-breaker Coordination between overcurrent protective devices in series <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | conventional non-tripping current ( conventional tripping current ( instantaneous tripping current clearance (see creepage distance (see Classification According to the number of poles According to the protection against external influences: <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | According to the method of mounting: According to the method of electrical connection: According to the instantaneous tripping current (see sub-clause According to the I Characteristics of circuit-breakers List of characteristics Rated quantities <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Standard and preferred values <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Table I Standard values of rated short-circuit capacity Table II Ranges of instantaneous tripping Marking and other product information Standard marking <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Additional marking Guidance table for marking <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Standard conditions for operation in service Ambient air temperature range Altitude Atmospheric conditions Conditions of installation Requirements for construction and operation Mechanical design <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | Table III Clearances and creepage distances <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | Table IV Connectable cross-sections of copper conductors for screw-type terminals <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Protection against electric-shock <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Dielectric properties Temperature rise Uninterrupted duty Automatic operation <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | Table VI Time-current operating characteristics <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | Mechanical and electrical endurance Performance at short-circuit currents Resistance to mechanical shock and impact Resistance to heat Resistance to abnormal heat and to fire Resistance to rusting Power loss Electromagnetic immunity Electromagnetic emission <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | Tests Type tests and routine tests Test conditions <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Table VIII Cross-sectional (S) areas of test copper conductors corresponding to the rated currents Test of indelibility of marking Test of reliability of screws, current-carrying parts and connections <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | Table IX Screw thread diameters and applied torques Table X Pulling forces Test of reliability of terminals for external conductors <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | Table XI Conductor dimensions Test of protection against electric shock <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | Test of dielectric properties <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | Test of temperature rise and measurement of power loss <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | Table XIA Maximum power losses per pole 28-day test Test of tripping characteristic <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | Test of mechanical and electrical endurance <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | Short-circuit tests Table XII List of short-circuit tests <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | power factor ranges of the test circuit <\/td>\n<\/tr>\n | ||||||
| 48<\/td>\n | Table XIV Table XV <\/td>\n<\/tr>\n | ||||||
| 49<\/td>\n | Table XVI Table XVII Table XVIII <\/td>\n<\/tr>\n | ||||||
| 50<\/td>\n | Table XIX <\/td>\n<\/tr>\n | ||||||
| 51<\/td>\n | Test of resistance to mechanical shock and impact <\/td>\n<\/tr>\n | ||||||
| 53<\/td>\n | Test of resistance to heat <\/td>\n<\/tr>\n | ||||||
| 54<\/td>\n | Resistance to abnormal heat and to fire Test of resistance to rusting <\/td>\n<\/tr>\n | ||||||
| 55<\/td>\n | Figure 1 Thread-forming tapping screw Figure 2 Thread-cutting tapping screw Figure 3 Single-pole circuit-breaker or individual pole of a multipole circuit-breaker <\/td>\n<\/tr>\n | ||||||
| 56<\/td>\n | Figure 4a Two-pole circuit-breaker with one protected pole Figure 4bTwo-pole circuit-breaker with two protected poles Figure 5 Three-pole circuit-breaker (or three single-pole circuit-breakers) <\/td>\n<\/tr>\n | ||||||
| 57<\/td>\n | Figure 3 to 6 Four-poll circuit-breaker <\/td>\n<\/tr>\n | ||||||
| 58<\/td>\n | Figure 7 Calibration of the test circuit <\/td>\n<\/tr>\n | ||||||
| 59<\/td>\n | Figure 8 Mechanical shock test apparatus <\/td>\n<\/tr>\n | ||||||
| 60<\/td>\n | Figure 9 Standard test finger (as in IEC Publication 529, Amendment No. 2) <\/td>\n<\/tr>\n | ||||||
| 61<\/td>\n | Figure 10 Mechanical impact test apparatus <\/td>\n<\/tr>\n | ||||||
| 62<\/td>\n | Figure 11 Pendulum for mechanical impact test apparatus (striking element) <\/td>\n<\/tr>\n | ||||||
| 63<\/td>\n | Figure 12 Mounting support for sample, for mechanical impact test <\/td>\n<\/tr>\n | ||||||
| 64<\/td>\n | Figure 13 Examples of mounting of a flush-type circuit-breaker for mechanical impact test <\/td>\n<\/tr>\n | ||||||
| 65<\/td>\n | Figure 14 Example of mounting of panel board type circuit-breaker for mechanical impact test <\/td>\n<\/tr>\n | ||||||
| 66<\/td>\n | Figure 15 Mechanical test, according to sub-clause Figure 16 Ball-pressure test apparatus <\/td>\n<\/tr>\n | ||||||
| 67<\/td>\n | Annex A Determination of short-circuit power factor Annex B Determination of clearances and creepage distances <\/td>\n<\/tr>\n | ||||||
| 69<\/td>\n | Annex C Test sequences and number of samples necessary to prove compliance with the standard Test sequences Number of samples to be submitted for full test procedure <\/td>\n<\/tr>\n | ||||||
| 70<\/td>\n | Table C.I Test sequences Table C.II Number of samples for full test procedure <\/td>\n<\/tr>\n | ||||||
| 71<\/td>\n | Number of samples to be submitted for simplified test procedure If a series of circuit-breakers of the same fundamental design, or additions to such a series of … For circuit-breakers having the same instantaneous tripping classification according to sub-clause\ufffd <\/td>\n<\/tr>\n | ||||||
| 72<\/td>\n | Table C.III Number of samples for simplified test procedure For an additional range of circuit-breakers of the same fundamental design as described in sub-cl… Table C.IV Test sequences for circuit-breakers having different instantaneous tripping currents <\/td>\n<\/tr>\n | ||||||
| 73<\/td>\n | Annex D Co-ordination between circuit-breakers and separate fuses associated in the same circuit <\/td>\n<\/tr>\n | ||||||
| 75<\/td>\n | Figure D1 <\/td>\n<\/tr>\n | ||||||
| 76<\/td>\n | Annex E Special requirements for auxiliary circuits for safety extra-low voltage Annex F Examples of terminals Figure F1 Examples of pillar terminals <\/td>\n<\/tr>\n | ||||||
| 77<\/td>\n | Figure F2 Examples of screw terminals and stud terminals <\/td>\n<\/tr>\n | ||||||
| 78<\/td>\n | Figure F3 Examples of saddle terminals Figure F4Examples of lug terminals Annex G Void <\/td>\n<\/tr>\n | ||||||
| 79<\/td>\n | Annex H Arrangement for the detection of the emission of ionized gases during short-circuit tests Figure H1Test arrangement <\/td>\n<\/tr>\n | ||||||
| 80<\/td>\n | Figure H2 Grid Figure H3 Grid circuit <\/td>\n<\/tr>\n | ||||||
| 81<\/td>\n | Annex ZA Classification of circuit-breakers into energy limiting classes Figure ZA1 Figure ZA2 <\/td>\n<\/tr>\n | ||||||
| 82<\/td>\n | Annex ZB Guide for the selection of circuit-breakers with reference to their rated voltage Annex ZC (informative) National A-deviations <\/td>\n<\/tr>\n | ||||||
| 83<\/td>\n | Annex ZD (normative) Other international publications quoted in this standard with the references of the r… <\/td>\n<\/tr>\n | ||||||
| 85<\/td>\n | National Appendix NA (informative) Deletions from and IEC text amended by common modifications to IEC Publication\ufffd898:… <\/td>\n<\/tr>\n | ||||||
| 87<\/td>\n | Table 1A Preferred values of rated voltage <\/td>\n<\/tr>\n | ||||||
| 89<\/td>\n | Table V Temperature rise values Table VI Time-current operating characteristics <\/td>\n<\/tr>\n | ||||||
| 90<\/td>\n | Table VII List of type tests <\/td>\n<\/tr>\n | ||||||
| 93<\/td>\n | Figure 7 Example of short-circuit making or breaking test record in the case of a single pole device on si… <\/td>\n<\/tr>\n | ||||||
| 94<\/td>\n | Appendix A Determination of short-circuit power factor Appendix C Test sequences and number of samples to be submitted for certification* purposes Table CII Number of samples for full test procedure <\/td>\n<\/tr>\n | ||||||
| 95<\/td>\n | Table CIII Number of samples for simplified test procedure Table CIV Test sequences for different instantaneous tripping classifications <\/td>\n<\/tr>\n | ||||||
| 96<\/td>\n | Appendix G Correspondence between ISO and AWG copper conductors <\/td>\n<\/tr>\n | ||||||
| 97<\/td>\n | National Appendix NB (informative) <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Specification for circuit-breakers for overcurrent protection for household and similar installations<\/b><\/p>\n |