PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

KR1277-1Relay,electromagnetic

Te Connectivity Corporation · NSN 5945-00-239-2662 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-239-2662 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-239-2662. Primary manufacturer part number: KR1277-1.
Features
  • Relay,electromagnetic — FSC 5945
  • Winding DC Resistance Rating: 2.5 KILOHMS NOMINAL SINGLE WINDING
  • Duty Type: CONTINUOUS
  • Mounting Facility Type and Quantity: 1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
  • Main Contact Load Current Rating at Maximum Rated Voltage: 3.0 AMPERES AC RESISTIVE LOAD
  • Main Contact Maximum Voltage Rating in Volts: 115.0 AC
  • Operating Voltage Rating and Type at Specified Temp: 48.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
  • Terminal Type and Quantity: 8 PIN ALL FUNCTIONS
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-239-2662, 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 11 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-239-2662
Primary Part NumberKR1277-1
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerTe Connectivity Corporation
StatusACTIVE
Winding DC Resistance Rating2.5 KILOHMS NOMINAL SINGLE WINDING
Duty TypeCONTINUOUS
Mounting Facility Type and Quantity1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
Main Contact Load Current Rating at Maximum Rated Voltage3.0 AMPERES AC RESISTIVE LOAD
Main Contact Maximum Voltage Rating in Volts115.0 AC
Operating Voltage Rating and Type at Specified Temp48.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Terminal Type and Quantity8 PIN ALL FUNCTIONS
Coil Quantity1
Environmental ProtectionFUNGUS PROOF
Nonpile-Up Main Contact Arrangement2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Winding Quantity1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5120-00-016-7654 INTERCHANGEABLE
Contact Positioner,terminal Crim
5330-00-087-932055108 INTERCHANGEABLE
Seal,plain Encased
Federal-Mogul Corp Government Sales Dept
6350-01-195-19126223-66-1 INTERCHANGEABLE
Alarm,flasher,dehydrator
Cooper Interconnect, Inc. Dba Cooper Interconnect Div Interconnect
Cross-Reference Index
Part NumberManufacturer
KR1277-1 Te Connectivity Corporation (USA)
55108 Raytheon Technical Services Company (USA)
KR1277 Te Connectivity Corporation (USA)
Related Parts
5120-00-016-7654INTERCHANGEABLE
CONTACT POSITIONER,TERMINAL CRIM
5330-00-087-9320INTERCHANGEABLE
SEAL,PLAIN ENCASED
55108
6350-01-195-1912INTERCHANGEABLE
ALARM,FLASHER,DEHYDRATOR
6223-66-1

Frequently Asked Questions

What is NSN 5945-00-239-2662?

NSN 5945-00-239-2662 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 5945-00-239-2662?

NSN 5945-00-239-2662 has 3 cross-referenced part numbers: KR1277-1 (Te Connectivity Corporation), 55108 (Raytheon Technical Services Company), KR1277 (Te Connectivity Corporation).

What NSN replaces 5945-00-239-2662?

There are 3 known substitutes for 5945-00-239-2662: 5120-00-016-7654, 5330-00-087-9320, 6350-01-195-1912. Verify interchangeability with system specifications before substitution.

What are the specifications of KR1277-1?

Key specifications for KR1277-1: Winding DC Resistance Rating: 2.5 KILOHMS NOMINAL SINGLE WINDING; Duty Type: CONTINUOUS; Mounting Facility Type and Quantity: 1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY; Main Contact Load Current Rating at Maximum Rated Voltage: 3.0 AMPERES AC RESISTIVE LOAD. 14 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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