National Stock Number (NSN) 5925-00-644-5546, or NIIN 006445546, (thermal release,circuit breaker) was assigned January 1, 1961 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 5925003519598.
There are 2 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years, with the most recent procurement date of Dec 22, 2011. There have been 5 contracts issued for this part number, with 3 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 3 different suppliers. The last contract numbers awarded were: SPM7M912M1252, SPM7M912M0084, SPM7M911M3937, SPM7M911M3954, SPM7M911M3951. The total value of the awarded contracts has been US$ 10,725.53.
This NSN is somewhat common among different platforms, belonging to 4 different weapons systems.
There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 02, 2006, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 02075. [AN ITEM CONTAINING FUSIBLE MATERIAL WHICH MELTS WHEN THE TEMPERATURE REACHES A PREDETERMINED VALUE CAUSED BY AN OVERLOAD IN AN ELECTRICAL CIRCUIT. THE MELTING (FUSION) OF THE MATERIAL MECHANICALLY CAUSES CONTACTS TO OPEN AND/OR CLOSE. THE ITEM MAY INCLUDE AN INTEGRAL HEATING ELEMENT, SUCH AS A COIL OR RESISTOR, BUT DOES NOT INCLUDE CONTACTS. EXCLUDES:COIL, CIRCUIT BREAKER; HEATER, THERMAL RELEASE; AND TRIPPER, CIRCUIT BREAKER.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 5925006445546 contains an unknown precious metal.
This NSN is associated to Schedule B 8538907020: automatic circuit breaker parts for headings 8535, 8536 or 8537. The Schedule B End Use is listed as electric apparatus. NAICS classification category 335313: switchgear and switchboard apparatus manufacturing.
This information was last updated on Jul 01, 2025.