PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C4524-548-1Relay,electromagnetic

Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters · NSN 5945-00-991-8258 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-991-8258 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-991-8258. Primary manufacturer part number: C4524-548-1.
Features
  • Relay,electromagnetic — FSC 5945
  • Duty Type: CONTINUOUS
  • Winding Quantity: 1
  • Storage Type: GENERAL PURPOSE WAREHOUSE
  • Coil Quantity: 1
  • Main Contact Load Current Rating at Maximum Rated Voltage: 25.0 AMPERES AC AND 25.0 AMPERES DC RESISTIVE LOAD
  • Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Purpose for Which Designed: GENERAL
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-991-8258, 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 Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5945-00-991-8258
Primary Part NumberC4524-548-1
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerTrane U.s. Inc. Dba the Trane Co Div Trane Headquarters
StatusCANCELLED
Duty TypeCONTINUOUS
Winding Quantity1
Storage TypeGENERAL PURPOSE WAREHOUSE
Coil Quantity1
Main Contact Load Current Rating at Maximum Rated Voltage25.0 AMPERES AC AND 25.0 AMPERES DC RESISTIVE LOAD
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Purpose for Which DesignedGENERAL
Main Contact Load Current Rating at Maximum Rated Voltage25.0 AMPERES AC AND 25.0 AMPERES DC MOTOR LOAD
Unthreaded Mounting Hole Diameter0.219 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Operating Voltage Rating and Type at Specified Temp200.0 VOLTS DC 25 DEG CELSIUS ALL WINDINGS
Main Contact Load Current Rating at Maximum Rated Voltage25.0 AMPERES AC AND 25.0 AMPERES DC INDUCTIVE LOAD
Arc Quenching MethodAIR
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Main Contact Maximum Voltage Rating in Volts200.0 AC AND 28.0 DC
Nonpile-Up Main Contact Arrangement3 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Center to Center Distance Between Mounting Facilities Parallel to Length2.469 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Fragility FactorMODERATELY RUGGED
Terminal Type and Quantity8 PIN ALL FUNCTIONS
Center to Center Distance Between Mounting Facilities Parallel to Width2.125 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
2825-00-389-9738 INTERCHANGEABLE
Guide,governor Valve
Cross-Reference Index
Part NumberManufacturer
CTR52 Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters (USA)
C4524-548-1 PRIMARY Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters (USA)
9071-8555 Leach International Corp Div Leach International Corporation (USA)
9565H123 Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA)
9565ED3 Safran Power Usa, Llc (USA)
54674 Keco Industries, Inc. (USA)
9565H123 Safran Power Usa, Llc (USA)
Related Parts
2825-00-389-9738INTERCHANGEABLE
GUIDE,GOVERNOR VALVE

Frequently Asked Questions

What is NSN 5945-00-991-8258?

NSN 5945-00-991-8258 is a Relay,electromagnetic, manufactured by Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters, classified under FSC 5945 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5945-00-991-8258?

NSN 5945-00-991-8258 has 7 cross-referenced part numbers: CTR52 (Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters), C4524-548-1 (Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters), 9071-8555 (Leach International Corp Div Leach International Corporation), 9565H123 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc), 9565ED3 (Safran Power Usa, Llc) and 2 more.

What NSN replaces 5945-00-991-8258?

There is 1 known substitute for 5945-00-991-8258: 2825-00-389-9738. Verify interchangeability with system specifications before substitution.

What are the specifications of C4524-548-1?

Key specifications for C4524-548-1: Duty Type: CONTINUOUS; Winding Quantity: 1; Storage Type: GENERAL PURPOSE WAREHOUSE; Coil Quantity: 1. 22 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5945-00-991-8258 still in active supply?

NSN 5945-00-991-8258 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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