PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

R300Relay,motor Driven

Kurman Relays Inc · NSN 5945-00-253-4477 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-253-4477 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-253-4477. Primary manufacturer part number: R300.
Features
  • Relay,motor Driven — FSC 5945
  • Motor Type: SYNCHRONOUS
  • Contact Arrangement: 1SPSTNC
  • Relay Type: GENERAL PURPOSE
  • 2 verified cross-references
  • Primary manufacturer: Kurman Relays Inc
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
  • Mechanical power generation
  • Drive system operation
General Description

The Relay,motor Driven, cataloged under National Stock Number 5945-00-253-4477, 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 Kurman Relays Inc. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-253-4477
Primary Part NumberR300
Item NameRelay,motor Driven
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerKurman Relays Inc
StatusACTIVE
Motor TypeSYNCHRONOUS
Contact Arrangement1SPSTNC
Relay TypeGENERAL PURPOSE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3431-00-228-6288MODEL R3R STOCK NO K1285-16 INTERCHANGEABLE
Welding Machine,arc
Lincoln Electric Holdings Inc
5910-00-262-8433161-25 INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
Cummins Power Generation Inc.
1680-00-340-5363R300 INTERCHANGEABLE
Gear Assembly,bevel
Whippany Actuation Systems, Llc
5130-00-474-8779R300 INTERCHANGEABLE
Stand,portable Drill,horizontal
Milwaukee Electric Tool Corp Dba Milwaukee Electric Tools
5950-00-646-1357R300 INTERCHANGEABLE
Coil,radio Frequency
Viking Technologies, Ltd.
4310-00-690-3710 INTERCHANGEABLE
Cylinder,reciprocating Compresso
4320-00-938-8059150046000-100-573 INTERCHANGEABLE
Rotor,pump
Euramco Safety Inc
5998-00-949-5733143-1001-53 INTERCHANGEABLE
Circuit Card Assembly
Tabet Manufacturing Company, Inc. Dba Tabet Manufacturing Co Inc
5120-01-072-295629200 INTERCHANGEABLE
Wrench,impact,manual
Lisle Corp
4820-01-181-0218292-00 INTERCHANGEABLE
Stem,fluid Valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Cross-Reference Index
Part NumberManufacturer
R300 Kurman Relays Inc (USA)
29200 Naval Ship Systems Command (USA)
Related Parts
3431-00-228-6288INTERCHANGEABLE
WELDING MACHINE,ARC
MODEL R3R STOCK NO K1285-16
5910-00-262-8433INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
161-25
1680-00-340-5363INTERCHANGEABLE
GEAR ASSEMBLY,BEVEL
R300
5130-00-474-8779INTERCHANGEABLE
STAND,PORTABLE DRILL,HORIZONTAL
R300
5950-00-646-1357INTERCHANGEABLE
COIL,RADIO FREQUENCY
R300
4310-00-690-3710INTERCHANGEABLE
CYLINDER,RECIPROCATING COMPRESSO
4320-00-938-8059INTERCHANGEABLE
ROTOR,PUMP
150046000-100-573
5998-00-949-5733INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
143-1001-53
5120-01-072-2956INTERCHANGEABLE
WRENCH,IMPACT,MANUAL
29200
4820-01-181-0218INTERCHANGEABLE
STEM,FLUID VALVE
292-00
5975-01-183-8750INTERCHANGEABLE
COUPLING,ELECTRICAL CONDUIT
8624
6350-01-243-0588INTERCHANGEABLE
ALARM,PERSONAL DISTRESS
SPIIM

Frequently Asked Questions

What is NSN 5945-00-253-4477?

NSN 5945-00-253-4477 is a Relay,motor Driven, manufactured by Kurman Relays Inc, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-253-4477?

NSN 5945-00-253-4477 has 2 cross-referenced part numbers: R300 (Kurman Relays Inc), 29200 (Naval Ship Systems Command).

What NSN replaces 5945-00-253-4477?

There are 12 known substitutes for 5945-00-253-4477: 3431-00-228-6288, 5910-00-262-8433, 1680-00-340-5363 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of R300?

Key specifications for R300: Motor Type: SYNCHRONOUS; Contact Arrangement: 1SPSTNC; Relay Type: GENERAL PURPOSE; Special Features: ELEC RATING 115 VAC MAX RATED VOLTAGE,5 AMP NOM CURRENT RATING;MOTOR 115 VAC,60 HZ;2 TERMINALS FOR MOTOR/2 FOR CONTACTS;RATED OPERATING TIME 30-60 MIN(ADJUSTABLE),DIAL RANGE 0-60 SEC,W/O PROG. INDICATOR;O/A DIMS.EXCL TERMINALS 3-9/16 IN. LG,2-1/4 IN. W,2-7/16 IN. DEEP;TWO 0.173 IN. DIA MTG HOLES DIAGONALLY SPACED ON 3-1/8 X 1-13/16 IN. MTG CTRS;SPECIAL FEATURES:CONTACTS TO REMAIN CLOSED FOR 1 SEC DURATION WHEN LINE VOLTAGE DROPS TO 75V;RESISTANT TO HUMIDITY VAC. 4 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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