PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M5757/15-003Relay,electromagnetic

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5945-00-829-2825 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-829-2825 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-829-2825. Primary manufacturer part number: M5757/15-003.
Features
  • Relay,electromagnetic — FSC 5945
  • Terminal Type and Quantity: 14 PIN ALL FUNCTIONS
  • Duty Type: CONTINUOUS
  • Thread Class: 2A SINGLE MOUNTING FACILITY A
  • Winding DC Resistance Rating: 1.08 KILOHMS NOMINAL SINGLE WINDING
  • Nominal Thread Size: 0.138 INCHES SINGLE MOUNTING FACILITY IN
  • Nondefinitive Spec/std Data: RY4PA3B3L02 TYPE
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 0.687 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-829-2825, is classified within Federal Supply Class 5945 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-829-2825
Primary Part NumberM5757/15-003
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Terminal Type and Quantity14 PIN ALL FUNCTIONS
Duty TypeCONTINUOUS
Thread Class2A SINGLE MOUNTING FACILITY A
Winding DC Resistance Rating1.08 KILOHMS NOMINAL SINGLE WINDING
Nominal Thread Size0.138 INCHES SINGLE MOUNTING FACILITY IN
Nondefinitive Spec/std DataRY4PA3B3L02 TYPE
Center to Center Distance Between Mounting Facilities Parallel to Width0.687 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Winding Quantity1
Center to Center Distance Between Mounting Facilities Parallel to Length1.187 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Main Contact Maximum Voltage Rating in Volts115.0 AC AND 28.0 DC
Environmental ProtectionHERMETIC
Nonpile-Up Main Contact Arrangement4 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Coil Quantity1
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Frequency in Hertz60.0 NOMINAL
Main Contact Load Current Rating at Maximum Rated Voltage3.0 AMPERES AC AND 3.0 AMPERES DC RESISTIVE LOAD
Operating Voltage Rating and Type at Specified Temp115.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
Mounting Facility Type and Quantity4 THREADED STUD(S) SINGLE MOUNTING FACILITY
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5945-00-914-0152 INTERCHANGEABLE
Relay,electromagnetic
Cross-Reference Index
Part NumberManufacturer
M5757/15-003 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILR5757-15 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
RY4PA3B3L02 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
163978 Scientific Atlanta Inc (USA)
Related Parts
5945-00-914-0152INTERCHANGEABLE
RELAY,ELECTROMAGNETIC

Frequently Asked Questions

What is NSN 5945-00-829-2825?

NSN 5945-00-829-2825 is a Relay,electromagnetic, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-829-2825?

NSN 5945-00-829-2825 has 4 cross-referenced part numbers: M5757/15-003 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILR5757-15 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), RY4PA3B3L02 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 163978 (Scientific Atlanta Inc).

What NSN replaces 5945-00-829-2825?

There is 1 known substitute for 5945-00-829-2825: 5945-00-914-0152. Verify interchangeability with system specifications before substitution.

What are the specifications of M5757/15-003?

Key specifications for M5757/15-003: Terminal Type and Quantity: 14 PIN ALL FUNCTIONS; Duty Type: CONTINUOUS; Thread Class: 2A SINGLE MOUNTING FACILITY A; Winding DC Resistance Rating: 1.08 KILOHMS NOMINAL SINGLE WINDING. 22 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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