UL SUBJECT 489D-2012 OUTLINE OF INVESTIGATION FOR US NAVAL COMMERCIAL-OFF-THE-SHELF (COTS) DESIGNATED MOLDED-CASE CIRCUIT BREAKERS AND ACCESSORIES FOR USE ON NON-NUCLEAR NAVAL COMBATANT SHIPS (Issue 1)
1.1 These requirements cover commercial-off-the-shelf (COTS), three-pole and four-pole molded-case circuit breakers and applicable accessories (undervoltage trip release devices, shunt trip release devices, electrical (motor) operators, auxiliary switches, plug-in mounting adapter blocks/bases, drawout cassette) intended for use aboard non-nuclear Naval combatant ships in electrical assemblies (switchboards and load centers) installed on shock isolators (mounts).
1.2 Successful initial qualification testing and requalification testing of circuit breakers/accessories to the requirements of this Outline shall allow their use in shock-mounted electrical assemblies in non-nuclear Naval combatant ships.
UL SUBJECT 489D-2012 Referenced Document
IEC 60947-2 Low-voltage switchgear and controlgear - Part 2: Circuit-breakers
UL 489 Molded-case circuit breakers and circuit-breaker enclosures
UL SUBJECT 489D-2012 history
2022UL SUBJECT 489D-2022 UL Outline of Investigation for US Naval Commercial-Off-The-Shelf (COTS) Designated Molded-Case Circuit Breakers, Molded-Case Switches, and Accessories for Use on Non Nuclear Naval Combatant Ships
2012UL SUBJECT 489D-2012 OUTLINE OF INVESTIGATION FOR US NAVAL COMMERCIAL-OFF-THE-SHELF (COTS) DESIGNATED MOLDED-CASE CIRCUIT BREAKERS AND ACCESSORIES FOR USE ON NON-NUCLEAR NAVAL COMBATANT SHIPS (Issue 1)