BS EN 60255-23:1997

1 General
    1.1 Scope and object
    1.2 Normative references
2 Definitions
3 Standard rated and preferred values
    3.1 Standard rated values
    3.2 Standard preferred values
4 Test conditions
    4.1 General
    4.2 Test circuit
    4.3 Relay energization
    4.4 Criteria of contact failure
5 Assessment of contact performance
    5.1 General
    5.2 Evaluation
6 Presentation of performance
Annexes
A (normative) Standard test circuit
B (normative) Categories of application of contacts
C (normative) Assessment of test results
D (normative) Simplified method for assessment of contact
    ratings
E (normative) Assessment of reliability characteristics
    of all-or-nothing relays
ZA (normative) Normative references to international
    publications with their corresponding European
    publications

Specifies standard rated values, test conditions and method of contact performance assessment.