PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1604203-5Circuit Breaker

Alliant Techsystems Operations Llc Div Defense Electronic Systems · NSN 5925-00-261-7701 · FSC 5925 · No Item Name Available
Verified by PartsTable
NSN 5925-00-261-7701 — this item is cataloged by the U.S. Government under National Stock Number 5925-00-261-7701. Primary manufacturer part number: 1604203-5.
Features
  • Circuit Breaker — FSC 5925
  • Trip Delay Time in Seconds Per Rated Continuous Current: 4.000 MINIMUM AT 200 PCT AND 4.000 MINIMUM AT 200 PCT AND 20.000 MAXIMUM AT 200 PCT ALL LOCATIONS20.000 MAXIMUM AT 200 PCT ALL LOCATIONS
  • Circuit Protection Type: OVERCURRENT ALL LOCATIONSOVERCURRENT ALL LOCATIONS
  • Maximum Continuous Load Current Rating Per Pole: 5.0 AMPERES AC ALL LOCATIONS5.0 AMPERES AC ALL LOCATIONS
  • Frequency in Hertz: 400.0 ALL LOCATIONS400.0 ALL LOCATIONS
  • Material: PLASTIC CASE
  • Inclosure Protection Type for Which Designed: DUSTPROOFDUSTPROOF
  • Internal Trip Release Configuration: SERIES TRIP ALL LOCATIONSSERIES TRIP ALL LOCATIONS
Applications
  • Applications requiring Plastic Case construction
General Description

The Circuit Breaker, cataloged under National Stock Number 5925-00-261-7701, is classified within Federal Supply Class 5925 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Alliant Techsystems Operations Llc Div Defense Electronic Systems. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5925-00-261-7701
Primary Part Number1604203-5
Item NameCircuit Breaker
FSC / FSG5925 / 59 — No Item Name Available
ManufacturerAlliant Techsystems Operations Llc Div Defense Electronic Systems
StatusCANCELLED
Trip Delay Time in Seconds Per Rated Continuous Current4.000 MINIMUM AT 200 PCT AND 4.000 MINIMUM AT 200 PCT AND 20.000 MAXIMUM AT 200 PCT ALL LOCATIONS20.000 MAXIMUM AT 200 PCT ALL LOCATIONS
Circuit Protection TypeOVERCURRENT ALL LOCATIONSOVERCURRENT ALL LOCATIONS
Maximum Continuous Load Current Rating Per Pole5.0 AMPERES AC ALL LOCATIONS5.0 AMPERES AC ALL LOCATIONS
Frequency in Hertz400.0 ALL LOCATIONS400.0 ALL LOCATIONS
MaterialPLASTIC CASE
Inclosure Protection Type for Which DesignedDUSTPROOFDUSTPROOF
Internal Trip Release ConfigurationSERIES TRIP ALL LOCATIONSSERIES TRIP ALL LOCATIONS
Storage TypeGENERAL PURPOSE WAREHOUSEGENERAL PURPOSE WAREHOUSE
Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent138.0 ALL LOCATIONS138.0 ALL LOCATIONS
Terminal Type and Quantity6 SCREW6 SCREW
Actuator FunctionTRIP-RESETTRIP-RESET
Manual Actuator Type and Quantity1 PUSH-PULL1 PUSH-PULL
Trip Release MethodTHERMAL ALL LOCATIONSTHERMAL ALL LOCATIONS
Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps2000.0 AC ALL LOCATIONS2000.0 AC ALL LOCATIONS
Trip Release CharacteristicTIME DELAY ALL LOCATIONSTIME DELAY ALL LOCATIONS
Center to Center Distance Between Terminals Parallel to Length0.704 INCHES NOMINAL0.704 INCHES NOMINAL IN
Mounting Facility Type and Quantity1 THREADED BUSHING1 THREADED BUSHING
Fragility FactorMODERATELY RUGGEDMODERATELY RUGGED
Center to Center Distance Between Terminals Parallel to Width0.593 INCHES NOMINAL0.593 INCHES NOMINAL IN
Thread Quantity Per Inch3232
Arc Quenching MethodAIRAIR
Pole Quantity33
Operating Voltage Type and Rating Per Pole in Volts120.0 AC ALL LOCATIONS120.0 AC ALL LOCATIONS
Body Height1.530 INCHES MAXIMUM1.530 INCHES MAXIMUM IN
Body Length1.100 INCHES MAXIMUM1.100 INCHES MAXIMUM IN
Nominal Thread Size0.469 INCHES0.469 INCHES IN
Bushing Length0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
Body Width1.781 INCHES MAXIMUM1.781 INCHES MAXIMUM IN
Body StyleMULTIPOLE-SINGLE ACTUATOR TYPEMULTIPOLE-SINGLE ACTUATOR TYPE
Thread Series DesignatorUNSUNS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5905-00-266-0931213278PC22 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6680-01-143-69643005-25 INTERCHANGEABLE
Transmitter,liquid Quantity
Pentair Filtration Solutions, Llc
4720-01-192-352158578 INTERCHANGEABLE
Tubing,nonmetallic
Bergstrom Inc
Cross-Reference Index
Part NumberManufacturer
6TC14-5 Leonardo Spa Helicopters Division - Production Site (ITA)
1604203-5 PRIMARY Alliant Techsystems Operations Llc Div Defense Electronic Systems (USA)
6TC14-5 Sensata Technologies, Inc. Div Sensata Attleboro (USA)
Q531487066 Rheinmetall Air Defence Ag (CHE)
2137159G003 PRIMARY L3harris Technologies, Inc. (USA)
30-052-5 Bell Textron Inc (USA)
Related Parts
5905-00-266-0931INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
213278PC22
6680-01-143-6964INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
3005-25
4720-01-192-3521INTERCHANGEABLE
TUBING,NONMETALLIC
58578

Frequently Asked Questions

What is NSN 5925-00-261-7701?

NSN 5925-00-261-7701 is a Circuit Breaker, manufactured by Alliant Techsystems Operations Llc Div Defense Electronic Systems, classified under FSC 5925 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5925-00-261-7701?

NSN 5925-00-261-7701 has 6 cross-referenced part numbers: 6TC14-5 (Leonardo Spa Helicopters Division - Production Site), 1604203-5 (Alliant Techsystems Operations Llc Div Defense Electronic Systems), 6TC14-5 (Sensata Technologies, Inc. Div Sensata Attleboro), Q531487066 (Rheinmetall Air Defence Ag), 2137159G003 (L3harris Technologies, Inc.) and 1 more.

What NSN replaces 5925-00-261-7701?

There are 3 known substitutes for 5925-00-261-7701: 5905-00-266-0931, 6680-01-143-6964, 4720-01-192-3521. Verify interchangeability with system specifications before substitution.

What are the specifications of 1604203-5?

Key specifications for 1604203-5: Trip Delay Time in Seconds Per Rated Continuous Current: 4.000 MINIMUM AT 200 PCT AND 4.000 MINIMUM AT 200 PCT AND 20.000 MAXIMUM AT 200 PCT ALL LOCATIONS20.000 MAXIMUM AT 200 PCT ALL LOCATIONS; Circuit Protection Type: OVERCURRENT ALL LOCATIONSOVERCURRENT ALL LOCATIONS; Maximum Continuous Load Current Rating Per Pole: 5.0 AMPERES AC ALL LOCATIONS5.0 AMPERES AC ALL LOCATIONS; Frequency in Hertz: 400.0 ALL LOCATIONS400.0 ALL LOCATIONS. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5925-00-261-7701 still in active supply?

NSN 5925-00-261-7701 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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