The Department of Trade and Industry’s Bureau of Philippine Standards (DTI-BPS) adopts the international standard of the International Electrotechnical Commission (IEC), IEC 60947-:2020 Low-voltage switchgear and controlgear – Part 2: Circuit breakers, as Philippine National Standard, PNS IEC 60947-2:2020 through the recommendation of the Technical Committee on Electrical Wiring Devices (BPS/TC10). This standard cancels and replaces PNS IEC 60947-2:2015.
PNS IEC 60947-2:2020 specifies the characteristics of circuit-breakers, the conditions with which circuit-breakers shall comply with reference to: 1) operation and behavior in normal service; 2) operation and behavior in case of overload and operation and behavior in case of short-circuit, including co-ordination in service (selectivity and back-up protection); 3) dielectric properties, the tests intended for confirming that these conditions have been met and the methods to be adopted for these tests, and the information to be marked on or given with the product.
The standard applies to circuit-breakers, intended to be installed and operated by instructed or skilled persons with the main contacts intended to be connected to circuits and the rated voltage not to exceed 1 000 V a.c. or 1 500 V d.c.. Circuit breakers rated above 1 000 V a.c. but not exceeding 1 500 V a.c may also be tested to this standard. It also contains additional requirements for integrally fused circuit-breakers. The standard is applicable to circuit-breakers whatever the rated currents, the method of construction or the proposed application.
Circuit breaker is a regulated product by the BPS through its Mandatory Product Certification Schemes: the Philippine Standard (PS) Quality and/or Safety Certification Mark Licensing Scheme for manufacturers and the Import Commodity Clearance (ICC) Certification Scheme for importers. Products covered by the mandatory certification, whether locally manufactured or imported, are not allowed to be distributed in the Philippine market without the necessary PS or ICC marks. The PS Quality and/or Safety Certification Mark License is granted to either local or foreign manufacturer whose factory and product have successfully complied with the requirements of the PNS ISO 9001 and the relevant product standard for which in this case for circuit breakers will be PNS IEC 60947-2:2020. Likewise, ICC Certificate is issued to an importer whose imported products have shown conformance to relevant standards through inspection, verification, and product testing.
The PS Mark and ICC Sticker affixed to the products serve as the consumer’s assurance that the products they purchase are certified by the BPS.
The DTI-BPS is the National Standards Body of the Philippines. It is the country’s member to the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC).