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BSI
BS 2950:1958

BS 2950:1958

Current

Current

The latest, up-to-date edition.

Specification. Cartridge fuse-links for telecommunication and light electrical apparatus

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-01-1958

Publisher

British Standards Institution

Cooperating organizations
Foreword
SECTION ONE: GENERAL
1 Scope
2 Definitions
SECTION TWO: SPECIFICATION
3 Dimensions
4 End-caps
5 Preferred rated currents and voltages
6 Minimum life
7 Blowing current
8 Breaking-capacity
9 Marking
SECTION THREE: TESTS
10 Performance tests
11 Criteria of failure
APPENDIX A
Recommended method for comparing the surge-resisting
characteristics of small telecommunication cartridge
fuse-links

Non-rewireable cartridge fuse-links. Dimensions, rated voltage related to rated current, breaking-capacity test. Fuse-links of two grades, which blow at two or three times their rated currents.

This British Standard relates to non-rewirable cartridge fuse-links for use in conjunction with telecommunication or light electrical equipment where the prospective fault current of the circuit will not exceed ten times the rated current of the fuse-link.

Fuse-links of two grades, A and B, which will blow at two or three times their rated currents respectively, are specified for rated currents of 250 ma and below.

The standard does not specify surge resistin characteristics, but for the guidance of those who wish to make tests of these characteristics, information on a suitable test is given in Appendix A.

Committee
PEL/32
DevelopmentNote
Reviewed and confirmed by BSI, July 2013. (06/2013)
DocumentType
Standard
Pages
16
PublisherName
British Standards Institution
Status
Current

Standards Relationship
AS C342-1965 Identical

BS 646(1958) : 1958 SPECIFICATION FOR CARTRIDGE FUSE-LINKS (RATED UP TO 5 AMPERES) FOR A.C. AND D.C. SERVICE
BS 5258-9:1989 Safety of domestic gas appliances Specification for combined appliances: fanned-circulation ducted-air heaters/circulators
BS 5986:1980 Specification for electrical safety and performance of gas fired space heating appliances with inputs 60 kW to 2 MW

BS 381C:1996 Specification for colours for identification, coding and special purposes
BS 646(1958) : 1958 SPECIFICATION FOR CARTRIDGE FUSE-LINKS (RATED UP TO 5 AMPERES) FOR A.C. AND D.C. SERVICE

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Hardcopy - English
PDF - English
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