PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

124-903Relay,electromagnetic

Emerson Electric Co White Rodgers Co Div · NSN 5945-01-252-1412 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-01-252-1412 — this item is cataloged by the U.S. Government under National Stock Number 5945-01-252-1412. Primary manufacturer part number: 124-903.
Features
  • Relay,electromagnetic — FSC 5945
  • Coil Quantity: 1
  • Terminal Type and Quantity: 4 THREADED STUD ALL FUNCTIONS
  • Purpose for Which Designed: GENERAL
  • Duty Type: CONTINUOUS
  • Mounting Facility Pattern: IN-LINE SINGLE MOUNTING FACILITY
  • Winding Quantity: 1
  • Fragility Factor: MODERATELY RUGGED
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-01-252-1412, 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 Emerson Electric Co White Rodgers Co Div. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5945-01-252-1412
Primary Part Number124-903
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerEmerson Electric Co White Rodgers Co Div
StatusCANCELLED
Coil Quantity1
Terminal Type and Quantity4 THREADED STUD ALL FUNCTIONS
Purpose for Which DesignedGENERAL
Duty TypeCONTINUOUS
Mounting Facility PatternIN-LINE SINGLE MOUNTING FACILITY
Winding Quantity1
Fragility FactorMODERATELY RUGGED
Main Contact Maximum Voltage Rating in Volts24.0 DC
Nonpile-Up Main Contact Arrangement1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Mounting Facility Type and Quantity2 SLOTTED HOLE SINGLE MOUNTING FACILITY
Cubic Measure21.578 CUBIC INCHES
Arc Quenching MethodAIR
Mounting Slot Width0.281 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Main Contact Load Current Rating at Maximum Rated Voltage100.0 AMPERES DC RESISTIVE LOAD
Operating Voltage Rating and Type at Specified Temp24.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Center to Center Distance Between Mounting Facilities Parallel to Length2.313 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Winding DC Resistance Rating53.0 OHMS NOMINAL SINGLE WINDING
Storage TypeGENERAL PURPOSE WAREHOUSE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5930-01-209-4698124903 INTERCHANGEABLE
Switch,rotary
Electro Switch Corp. Dba Electro Switch Corp
5945-01-245-8352 INTERCHANGEABLE
Relay Assembly
2920-01-501-6279 INTERCHANGEABLE
Starter,engine,electrical
Cross-Reference Index
Part NumberManufacturer
A3157721 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
124-903 PRIMARY Emerson Electric Co White Rodgers Co Div (USA)
124-903 Emerson Electric Co White-Rodgers Div (USA)
124-114111 Emerson Electric Co White-Rodgers Div (USA)
Related Parts
5930-01-209-4698INTERCHANGEABLE
SWITCH,ROTARY
124903
5945-01-245-8352INTERCHANGEABLE
RELAY ASSEMBLY
2920-01-501-6279INTERCHANGEABLE
STARTER,ENGINE,ELECTRICAL

Frequently Asked Questions

What is NSN 5945-01-252-1412?

NSN 5945-01-252-1412 is a Relay,electromagnetic, manufactured by Emerson Electric Co White Rodgers Co Div, classified under FSC 5945 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5945-01-252-1412?

NSN 5945-01-252-1412 has 4 cross-referenced part numbers: A3157721 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), 124-903 (Emerson Electric Co White Rodgers Co Div), 124-903 (Emerson Electric Co White-Rodgers Div), 124-114111 (Emerson Electric Co White-Rodgers Div).

What NSN replaces 5945-01-252-1412?

There are 3 known substitutes for 5945-01-252-1412: 5930-01-209-4698, 5945-01-245-8352, 2920-01-501-6279. Verify interchangeability with system specifications before substitution.

What are the specifications of 124-903?

Key specifications for 124-903: Coil Quantity: 1; Terminal Type and Quantity: 4 THREADED STUD ALL FUNCTIONS; End Item Identification: ADAPTER,TEST; Purpose for Which Designed: GENERAL. 22 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5945-01-252-1412 still in active supply?

NSN 5945-01-252-1412 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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