PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4MC2-105-4Circuit Breaker

Sensata Technologies, Inc. Div Sensata Attleboro · NSN 5925-00-932-0106 · FSC 5925 · No Item Name Available
Verified by PartsTable
NSN 5925-00-932-0106 — this item is cataloged by the U.S. Government under National Stock Number 5925-00-932-0106. Primary manufacturer part number: 4MC2-105-4.
Features
  • Circuit Breaker — FSC 5925
  • Main Contact Tripping Mechanism Type: TRIP FREE
  • Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps: 1000.0 AC SINGLE LOCATION
  • Unpackaged Unit Weight: 8.250 OUNCES NOMINAL OZ
  • Actuator Position Designation: AT POLE ONE
  • Circuit Protection Type: OVERCURRENT SINGLE LOCATION
  • Internal Trip Release Configuration: SERIES TRIP SINGLE LOCATION
  • Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent: 125.0 SINGLE LOCATION
Applications
  • Applications requiring Plastic Case construction
General Description

The Circuit Breaker, cataloged under National Stock Number 5925-00-932-0106, 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 Sensata Technologies, Inc. Div Sensata Attleboro. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5925-00-932-0106
Primary Part Number4MC2-105-4
Item NameCircuit Breaker
FSC / FSG5925 / 59 — No Item Name Available
ManufacturerSensata Technologies, Inc. Div Sensata Attleboro
StatusACTIVE
Main Contact Tripping Mechanism TypeTRIP FREE
Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps1000.0 AC SINGLE LOCATION
Unpackaged Unit Weight8.250 OUNCES NOMINAL OZ
Actuator Position DesignationAT POLE ONE
Circuit Protection TypeOVERCURRENT SINGLE LOCATION
Internal Trip Release ConfigurationSERIES TRIP SINGLE LOCATION
Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent125.0 SINGLE LOCATION
Trip Release MethodMAGNETIC SINGLE LOCATION
MaterialPLASTIC CASE
Trip Delay Time in Seconds Per Rated Continuous Current0.200 MINIMUM AT 200 PCT AND 0.600 MAXIMUM AT 200 PCT SINGLE LOCATION
Operating Voltage Type and Rating Per Pole in Volts220.0 AC SINGLE LOCATION
Trip Release CharacteristicTIME DELAY SINGLE LOCATION
Terminal Type and Quantity2 THREADED STUD
Frequency in Hertz60.0 SINGLE LOCATION
Nominal Thread Size0.138 INCHES IN
Actuator FunctionTRIP-RESET
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Manual Actuator Type and Quantity1 TOGGLE
Reset MethodMANUAL
Inclosure Protection Type for Which DesignedFUNGUS RESISTANT
Maximum Continuous Load Current Rating Per Pole4.0 AMPERES AC SINGLE LOCATION
Distance Between Centerlines of Mounting Facilities Parallel to Body Length1.810 INCHES NOMINAL IN
Boss Height0.115 INCHES NOMINAL IN
Thread Quantity Per Inch32
Arc Quenching MethodMAGNETIC BLOWOUT
Pole Quantity1
Center to Center Distance Between Terminals Parallel to Length1.680 INCHES NOMINAL IN
Mounting Surface to Terminal End Distance2.510 INCHES NOMINAL IN
Storage TypeGENERAL PURPOSE WAREHOUSE
Mounting Facility Type and Quantity2 THREADED HOLE(S)
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3030-00-528-4236 INTERCHANGEABLE
Belt,v
4320-00-952-4461 INTERCHANGEABLE
Ring,lantern
6530-01-036-0393311012 INTERCHANGEABLE
Wrapper,sterilization
Propper Manufacturing Company, Inc. Div Propper Manufacturing Company
5340-01-443-3094 INTERCHANGEABLE
Deflector,dirt and Liquid
Cross-Reference Index
Part NumberManufacturer
311012 American Telephone and Telegraph Co (USA)
4MC2-105-4 PRIMARY Sensata Technologies, Inc. Div Sensata Attleboro (USA)
311012 Lucent Technologies Inc Corporate Headquarters (USA)
Related Parts
3030-00-528-4236INTERCHANGEABLE
BELT,V
4320-00-952-4461INTERCHANGEABLE
RING,LANTERN
6530-01-036-0393INTERCHANGEABLE
WRAPPER,STERILIZATION
311012
5340-01-443-3094INTERCHANGEABLE
DEFLECTOR,DIRT AND LIQUID

Frequently Asked Questions

What is NSN 5925-00-932-0106?

NSN 5925-00-932-0106 is a Circuit Breaker, manufactured by Sensata Technologies, Inc. Div Sensata Attleboro, classified under FSC 5925 (No Item Name Available). Status: active.

What are the part numbers for NSN 5925-00-932-0106?

NSN 5925-00-932-0106 has 3 cross-referenced part numbers: 311012 (American Telephone and Telegraph Co), 4MC2-105-4 (Sensata Technologies, Inc. Div Sensata Attleboro), 311012 (Lucent Technologies Inc Corporate Headquarters).

What NSN replaces 5925-00-932-0106?

There are 4 known substitutes for 5925-00-932-0106: 3030-00-528-4236, 4320-00-952-4461, 6530-01-036-0393 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4MC2-105-4?

Key specifications for 4MC2-105-4: Main Contact Tripping Mechanism Type: TRIP FREE; Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps: 1000.0 AC SINGLE LOCATION; Unpackaged Unit Weight: 8.250 OUNCES NOMINAL OZ; Actuator Position Designation: AT POLE ONE. 30 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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