PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S121-7026Relay,electromagnetic

Psi-Peripheral Support · NSN 5945-01-397-7255 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-01-397-7255 — this item is cataloged by the U.S. Government under National Stock Number 5945-01-397-7255. Primary manufacturer part number: S121-7026.
Features
  • Relay,electromagnetic — FSC 5945
  • Winding Quantity: 1
  • Main Contact Maximum Voltage Rating in Volts: 125.0 AC AND 250.0 AC
  • Frequency in Hertz: 60.0 NOMINAL
  • Operating Voltage Rating and Type at Specified Temp: 24.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
  • Pile-Up Main Contact Form Arrangement: 3
  • Coil Quantity: 1
  • 1 verified cross-reference
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-01-397-7255, 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 Psi-Peripheral Support. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5945-01-397-7255
Primary Part NumberS121-7026
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerPsi-Peripheral Support
StatusACTIVE
Winding Quantity1
Main Contact Maximum Voltage Rating in Volts125.0 AC AND 250.0 AC
Frequency in Hertz60.0 NOMINAL
Operating Voltage Rating and Type at Specified Temp24.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Pile-Up Main Contact Form Arrangement3
Coil Quantity1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5945-00-458-335188-21085 INTERCHANGEABLE
Relay,electromagnetic
Department of Defense Project Manager-Mobile Electric Power
Cross-Reference Index
Part NumberManufacturer
S121-7026 PRIMARY Psi-Peripheral Support (USA)
Related Parts
5945-00-458-3351INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
88-21085

Frequently Asked Questions

What is NSN 5945-01-397-7255?

NSN 5945-01-397-7255 is a Relay,electromagnetic, manufactured by Psi-Peripheral Support, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-01-397-7255?

NSN 5945-01-397-7255 has 1 cross-referenced part number: S121-7026 (Psi-Peripheral Support).

What NSN replaces 5945-01-397-7255?

There is 1 known substitute for 5945-01-397-7255: 5945-00-458-3351. Verify interchangeability with system specifications before substitution.

What are the specifications of S121-7026?

Key specifications for S121-7026: Winding Quantity: 1; Main Contact Maximum Voltage Rating in Volts: 125.0 AC AND 250.0 AC; Frequency in Hertz: 60.0 NOMINAL; Operating Voltage Rating and Type at Specified Temp: 24.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING. 6 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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