PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

UV400S3Relay,electromagnetic

Te Connectivity Corporation · NSN 5945-00-405-4034 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-405-4034 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-405-4034. Primary manufacturer part number: UV400S3.
Features
  • Relay,electromagnetic — FSC 5945
  • Duty Type: CONTINUOUS
  • Operating Voltage Rating and Type at Specified Temp: 440.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
  • Thread Class: 2B SINGLE MOUNTING FACILITY
  • Main Contact Maximum Voltage Rating in Volts: 120.0 AC AND 28.0 DC
  • Winding Quantity: 1
  • Frequency in Hertz: 60.0 NOMINAL
  • Environmental Protection: DUSTPROOF
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-405-4034, 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 Te Connectivity Corporation. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, 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
NSN5945-00-405-4034
Primary Part NumberUV400S3
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerTe Connectivity Corporation
StatusACTIVE
Duty TypeCONTINUOUS
Operating Voltage Rating and Type at Specified Temp440.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
Thread Class2B SINGLE MOUNTING FACILITY
Main Contact Maximum Voltage Rating in Volts120.0 AC AND 28.0 DC
Winding Quantity1
Frequency in Hertz60.0 NOMINAL
Environmental ProtectionDUSTPROOF
Center to Center Distance Between Mounting Facilities Parallel to Width2.125 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Coil Quantity1
Terminal Type and Quantity5 PIN ALL FUNCTIONS
Mounting Facility Type and Quantity4 THREADED HOLE(S) SINGLE MOUNTING FACILITY
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Main Contact Load Current Rating at Maximum Rated Voltage2.0 AMPERES AC AND 2.0 AMPERES DC RESISTIVE LOAD
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Nonpile-Up Main Contact Arrangement1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Nominal Thread Size0.164 INCHES SINGLE MOUNTING FACILITY IN
Center to Center Distance Between Mounting Facilities Parallel to Length2.625 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3040-00-192-7299 INTERCHANGEABLE
Stop,multi-Turn
5365-00-214-263421101 INTERCHANGEABLE
Shim,bearing Spacer
Industrial Technologies and Services Llc
5120-00-449-80832205 INTERCHANGEABLE
Wrench,adjustable
Reed Manufacturing Company
5305-00-536-1565 INTERCHANGEABLE
Screw,push Lever,sp
2835-00-654-67961620C163 INTERCHANGEABLE
Pinion and Gear Ass
Triumph Gear Systems Inc Dba Triumph Gear Systems Inc
1660-00-736-790721101 INTERCHANGEABLE
Cover,regulator Ass
Avox Systems Inc Dba Avox Systems Inc
6130-00-849-837721-101 INTERCHANGEABLE
Power Supply
Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc
5965-00-946-2021215-330-001-694 INTERCHANGEABLE
Microphone Element
Roanwell, Llc
3433-00-946-95520330-0006 INTERCHANGEABLE
Tip,cutting Torch
Victor Equipment Co
4820-01-016-5050 INTERCHANGEABLE
Disk,valve
Cross-Reference Index
Part NumberManufacturer
21-101 Te Connectivity Corporation (USA)
400S3 Te Connectivity Corporation (USA)
UV400S3 PRIMARY Te Connectivity Corporation (USA)
201-101 Te Connectivity Corporation (USA)
Related Parts
3040-00-192-7299INTERCHANGEABLE
STOP,MULTI-TURN
5365-00-214-2634INTERCHANGEABLE
SHIM,BEARING SPACER
21101
5120-00-449-8083INTERCHANGEABLE
WRENCH,ADJUSTABLE
2205
5305-00-536-1565INTERCHANGEABLE
SCREW,PUSH LEVER,SP
2835-00-654-6796INTERCHANGEABLE
PINION AND GEAR ASS
1620C163
1660-00-736-7907INTERCHANGEABLE
COVER,REGULATOR ASS
21101
6130-00-849-8377INTERCHANGEABLE
POWER SUPPLY
21-101
5965-00-946-2021INTERCHANGEABLE
MICROPHONE ELEMENT
215-330-001-694
3433-00-946-9552INTERCHANGEABLE
TIP,CUTTING TORCH
0330-0006
4820-01-016-5050INTERCHANGEABLE
DISK,VALVE
5330-01-019-3233INTERCHANGEABLE
SEAL,PLAIN ENCASED
21101
5330-01-067-9691INTERCHANGEABLE
SEAL,PLAIN ENCASED

Frequently Asked Questions

What is NSN 5945-00-405-4034?

NSN 5945-00-405-4034 is a Relay,electromagnetic, manufactured by Te Connectivity Corporation, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-405-4034?

NSN 5945-00-405-4034 has 4 cross-referenced part numbers: 21-101 (Te Connectivity Corporation), 400S3 (Te Connectivity Corporation), UV400S3 (Te Connectivity Corporation), 201-101 (Te Connectivity Corporation).

What NSN replaces 5945-00-405-4034?

There are 12 known substitutes for 5945-00-405-4034: 3040-00-192-7299, 5365-00-214-2634, 5120-00-449-8083 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of UV400S3?

Key specifications for UV400S3: Overall Height: 3.000 INCHES NOMINAL IN; Duty Type: CONTINUOUS; Operating Voltage Rating and Type at Specified Temp: 440.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING; Overall Width: 3.500 INCHES NOMINAL IN. 20 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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