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OSM15 Recloser Tested To Latest ANSI C37.60 - 2003 Standard

The OSM15 has been tested at the KEMA laboratories in the Netherlands to the new ANSI C37.60 - 2003 standard for auto-reclosers.

This revision of the standard was published in August 2003 and we believe we are the first manufacturer in the world to conduct recloser testing to this new standard.

Type Test



ANSI C37.60 - 2003 has some significant changes from the old standard. These include:

  • Added new voltage ratings and dielectric withstand capabilities common outside of North America.
  • Added several new interrupting ratings.
  • Changed temperature rise and temperature limits to be consistent with circuit breaker standards.
  • Prohibited the use of single phase tests to qualify three-phase reclosers for switching performance.
  • Restricted the use of single-phase tests for three-phase reclosers.
  • Added Partial Discharge as a design and production test.


Testing to this latest standard clearly demonstrates NOJA Power's commitment to producing safe, reliable switchgear. In addition to type testing, all our reclosers undergo factory testing during manufacture and pre-dispatch. We strive to ensure our reclosers will operate reliably throughout their lifetime.