Product Details | THERMAL RELEASE HEATER

5999-00-504-9778 A resistive element which dissipates sufficient heat to melt the fusible material or distort the bimetallic element of an overload protective device when the temperature, as a result of an overload in an electrical circuit, reaches a predetermined value. Excludes COIL (as modified); HEATING ELEMENT, ELECTRICAL; RESISTANCE ELEMENT; RESISTOR, THERMAL; THERMAL RELEASE, CIRCUIT BREAKER; and items with integral bimetallic element, contacts, or fusible material.

Part Alternates: 59455049778, 9104H3955, 9104H3955A, 5999-00-504-9778, 00-504-9778, 5999005049778, 005049778

Electrical and Electronic Equipment Components | Miscellaneous Electrical and Electronic Components

Supply Group (FSG) NSN Assign. NIIN
59 01 JAN 1961 00-504-9778

Demand History | NSN 5999-00-504-9778

Part Number Request Date QTY Origin
59455049778 2025-10-278 70 DIBBS
9104H3955 2025-10-278 70 DIBBS
9104H3955A 2025-10-278 70 DIBBS
59455049778 2024-04-109 50 DIBBS
9104H3955 2024-04-109 50 DIBBS
9104H3955A 2024-04-109 50 DIBBS
59455049778 2023-12-342 103 DIBBS
9104H3955 2023-12-342 103 DIBBS
9104H3955A 2023-12-342 103 DIBBS
59455049778 2023-11-331 103 DIBBS
9104H3955 2023-11-331 103 DIBBS
9104H3955A 2023-11-331 103 DIBBS
59455049778 2023-08-230 75 DIBBS
9104H3955 2023-08-230 75 DIBBS
9104H3955A 2023-08-230 75 DIBBS
59455049778 2023-08-219 75 DIBBS
9104H3955 2023-08-219 75 DIBBS
9104H3955A 2023-08-219 75 DIBBS
59455049778 2023-01-20 71 DIBBS
9104H3955 2023-01-20 71 DIBBS
9104H3955A 2023-01-20 71 DIBBS
59455049778 2023-01-09 71 DIBBS
9104H3955 2023-01-09 71 DIBBS
9104H3955A 2023-01-09 71 DIBBS
59455049778 2020-10-302 22 DIBBS
9104H3955 2020-10-302 22 DIBBS
9104H3955A 2020-10-302 22 DIBBS
59455049778 2020-10-287 22 DIBBS
9104H3955 2020-10-287 22 DIBBS
9104H3955A 2020-10-287 22 DIBBS
59455049778 2020-09-264 7 DIBBS
9104H3955 2020-09-264 7 DIBBS
9104H3955A 2020-09-264 7 DIBBS
59455049778 2020-09-252 10 DIBBS
9104H3955 2020-09-252 10 DIBBS
9104H3955A 2020-09-252 10 DIBBS
59455049778 2020-08-240 10 DIBBS
9104H3955 2020-08-240 10 DIBBS
9104H3955A 2020-08-240 10 DIBBS
59455049778 2020-08-232 11 DIBBS
9104H3955 2020-08-232 11 DIBBS
9104H3955A 2020-08-232 11 DIBBS
5999-00-504-9778 2016-03-67 67 DIBBS

Cross Reference | NSN 5999-00-504-9778

Part Number Cage Code Manufacturer
59455049778 21877 NORTHROP GRUMMAN SYSTEMS CORPORATION DIV NAVAL AND MARINE SYSTEMS
9104H3955 27192 DRS POWER & CONTROL TECHNOLOGIES, INC.
9104H3955A 27192 DRS POWER & CONTROL TECHNOLOGIES, INC.

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Technical Data | NSN 5999-00-504-9778

Characteristic Specifications
MOUNTING FACILITY TYPE AND QUANTITY 2 SLOT
MOUNTING SLOT WIDTH 0.188 INCHES NOMINAL
OVERALL LENGTH 1.750 INCHES NOMINAL
OVERALL HEIGHT 1.188 INCHES NOMINAL
OVERALL WIDTH 1.000 INCHES NOMINAL

Restrictions/Controls & Freight Information | NSN 5999-00-504-9778

Category Code Description
Shelf-Life Code:0Nondeteriorative
Hazardous Material Indicator CodePThere is no information in the HMIS; 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
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
NMF Description 061300 CIRCUIT BREAKER/SWITCH NOI
Less than car load rating
Less than truck load rating P 77.5
Water commodity Code 658 unknown
Originating Activity Code XX
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity H Signal Corps supplies and equipment, including radio equipment and supplies, communications equipment and supplies, electrical equipment and supplies, etc.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable

Management | NSN 5999-00-504-9778

Category Code Description
Cognizance Codes9BNavy-owned stocks of DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesDDoD INTEGRATED MATERIEL-MANAGED, STOCKED, AND ISSUED # Issue, transfer, or shipment is not subject to specialized controls other than those imposed by the Integrated Materiel Manager/Service supply policy. 1. The item is centrally managed, stocked, and issued. 2. Requisitions must contain the fund citation required to acquire the item. Requisitions will be submitted in accordance with Integrated Materiel Manager(IMM)/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each