PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

291CRelay,electromagnetic

Lucent Technologies Inc Corporate Headquarters · NSN 5945-00-601-4212 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-601-4212 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-601-4212. Primary manufacturer part number: 291C.
Features
  • Relay,electromagnetic — FSC 5945
  • Mounting Facility Type and Quantity: 1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
  • Coil Quantity: 1
  • Terminal Type and Quantity: 5 PIN ALL FUNCTIONS
  • Duty Type: CONTINUOUS
  • Winding DC Resistance Rating: 118.0 OHMS NOMINAL SINGLE WINDING
  • Pile-Up Main Contact Form Arrangement: 1A A
  • Nominal Operating Current Rating and Type: 0.02 AMPERES DC ALL WINDINGS
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-601-4212, 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 Lucent Technologies Inc Corporate Headquarters. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-601-4212
Primary Part Number291C
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerLucent Technologies Inc Corporate Headquarters
StatusACTIVE
Mounting Facility Type and Quantity1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
Coil Quantity1
Terminal Type and Quantity5 PIN ALL FUNCTIONS
Duty TypeCONTINUOUS
Winding DC Resistance Rating118.0 OHMS NOMINAL SINGLE WINDING
Pile-Up Main Contact Form Arrangement1A A
Nominal Operating Current Rating and Type0.02 AMPERES DC ALL WINDINGS
Environmental ProtectionHERMETIC
Winding Quantity2
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3110-00-144-87891B4114 INTERCHANGEABLE
Bearing,ball,annular
Caterpillar Inc Div Caterpillar Defense
5961-00-615-5237303G INTERCHANGEABLE
Semiconductor Device,diode
Westinghouse Electric Corp
Cross-Reference Index
Part NumberManufacturer
303G American Telephone and Telegraph Co (USA)
291C American Telephone and Telegraph Co (USA)
291C PRIMARY Lucent Technologies Inc Corporate Headquarters (USA)
Related Parts
3110-00-144-8789INTERCHANGEABLE
BEARING,BALL,ANNULAR
1B4114
5961-00-615-5237INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
303G

Frequently Asked Questions

What is NSN 5945-00-601-4212?

NSN 5945-00-601-4212 is a Relay,electromagnetic, manufactured by Lucent Technologies Inc Corporate Headquarters, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-601-4212?

NSN 5945-00-601-4212 has 3 cross-referenced part numbers: 303G (American Telephone and Telegraph Co), 291C (American Telephone and Telegraph Co), 291C (Lucent Technologies Inc Corporate Headquarters).

What NSN replaces 5945-00-601-4212?

There are 2 known substitutes for 5945-00-601-4212: 3110-00-144-8789, 5961-00-615-5237. Verify interchangeability with system specifications before substitution.

What are the specifications of 291C?

Key specifications for 291C: Mounting Facility Type and Quantity: 1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY; Coil Quantity: 1; Terminal Type and Quantity: 5 PIN ALL FUNCTIONS; Duty Type: CONTINUOUS. 11 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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