#51303-025 Magnetic Circuit Protector | Circuit Breakers

51303-025

Circuit Breaker

NSN 5925-01-041-9943

DEMIL

Shelf Life

UOM

NIIN

Demil:

NO

Shelf Life:

N/A

UOM:

1 EA

NIIN:

010419943

Technical Specifications of NSN

Body Style:

Single pole type

Bushing Length:

Between 0.332 inches and 0.380 inches

Body Length:

1.562 inches

Body Width:

0.625 inches

Case Material:

Metal

Center To Center Distance Between Terminals Parallel To Length:

0.906 inches

Fragility Factor:

Moderately rugged

Mounting Surface To Terminal End Distance:

1.700 inches

Pole Quantity:

1

Arc Quenching Method:

Magnetic blowout

Mounting Facility Type And Quantity:

1 threaded bushing w/panel seal

Storage Type:

General purpose warehouse

Special Handling Feature:

Magnetic

Thready Qty Per Inch (tpi):

32

Maximum Continuous Load Current Rating Per Pole:

5.0 amperes ac single location and 5.0 amperes dc single location

Operating Voltage Type And Rating Per Pole In Volts:

240.0 ac single location and 50.0 dc single location

Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps:

300.0 ac single location and 500.0 dc single location

Circuit Protection Type:

Overcurrent single location

Trip Release Method:

Magnetic single location

Trip Release Characteristic:

Time delay single location

Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent:

135.0 single location

Reset Method:

Manual

Main Contact Tripping Mechanism Type:

Trip free

Manual Actuator Type And Quantity:

1 toggle

Actuator Function:

Trip-reset

Actuator Position Designation:

At pole one

Internal Trip Release Configuration:

Series trip single location

Thread Size:

0.375 inches

Trip Delay Time In Seconds Per Rated Continuous Current:

0.055 at 200 pct single location and 0.950 at 200 pct single location

Inclosure Protection Type For Which Designed:

Fungus resistant and vibration resistant and moisture resistant and shock resistant and salt spray proof

Frequency In Hertz:

400.0 single location

Unpackaged Unit Weight:

1.800 ounces

Test Data Document:

81349-mil-c-39019 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).

Thread Series Designator:

Unef

Terminal Type And Quantity:

2 wire hook

Specification Data:

81349-mil-c-39019/1 government specification

NSN:

5925-01-041-9943

Item Name:

Magnetic Circuit Protector

Cage Code:

74063

Other Related Parts

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Cage

RNCC

RNVC

RNAAC

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MSDS

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Part Number:

Cage Code:

RNCC:

C

RNVC:

1

RNAAC:

TX

Status:

A

MSDS:

SADC:

AF

Part Number:

SM3-5-240-400-2

Cage Code:

RNCC:

C

RNVC:

1

RNAAC:

TX

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A

MSDS:

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AF

Part Number:

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RNCC:

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RNVC:

1

RNAAC:

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MSDS:

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AF

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Cage Code:

RNCC:

C

RNVC:

1

RNAAC:

TX

Status:

A

MSDS:

SADC:

AF

Part Number:

Cage Code:

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RNVC:

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MSDS:

SADC:

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Part Number:

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Cage Code:

RNCC:

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RNVC:

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RNAAC:

TX

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Cage Code:

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C

RNVC:

1

RNAAC:

TX

Status:

A

MSDS:

SADC:

AF

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Cage Code:

RNCC:

C

RNVC:

1

RNAAC:

TX

Status:

A

MSDS:

SADC:

AF

Part Number:

Cage Code:

RNCC:

C

RNVC:

1

RNAAC:

TX

Status:

A

MSDS:

SADC:

AF

Part Number:

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RNCC:

2

RNVC:

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RNAAC:

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Status:

A

MSDS:

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Cage Code:

RNCC:

4

RNVC:

1

RNAAC:

ZZ

Status:

A

MSDS:

SADC:

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Cage Code:

RNCC:

C

RNVC:

1

RNAAC:

TX

Status:

A

MSDS:

SADC:

AF

Part Number:

Cage Code:

RNCC:

C

RNVC:

1

RNAAC:

TX

Status:

A

MSDS:

SADC:

AF

Part Number:

Cage Code:

RNCC:

C

RNVC:

1

RNAAC:

TX

Status:

A

MSDS:

SADC:

AF

Part Number:

Cage Code:

RNCC:

C

RNVC:

1

RNAAC:

TX

Status:

A

MSDS:

SADC:

AF

Part Number:

Cage Code:

RNCC:

C

RNVC:

1

RNAAC:

TX

Status:

A

MSDS:

SADC:

AF

Part Number:

Cage Code:

RNCC:

C

RNVC:

1

RNAAC:

TX

Status:

A

MSDS:

SADC:

AF

Part Number:

Cage Code:

RNCC:

C

RNVC:

1

RNAAC:

ZZ

Status:

A

MSDS:

SADC:

AC

Part Number:

706118 PIECE 42

Cage Code:

RNCC:

C

RNVC:

1

RNAAC:

ZZ

Status:

A

MSDS:

SADC:

AC

Part Number:

Cage Code:

RNCC:

C

RNVC:

1

RNAAC:

ZZ

Status:

A

MSDS:

SADC:

AC

Part Number:

Cage Code:

RNCC:

C

RNVC:

1

RNAAC:

ZZ

Status:

A

MSDS:

SADC:

AC

Part Number:

Cage Code:

RNCC:

E

RNVC:

8

RNAAC:

TX

Status:

A

MSDS:

SADC:

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1945824-9

Cage Code:

RNCC:

E

RNVC:

8

RNAAC:

TX

Status:

A

MSDS:

SADC:

Part Number:

Cage Code:

RNCC:

E

RNVC:

8

RNAAC:

TX

Status:

A

MSDS:

SADC:

Part Number:

Cage Code:

RNCC:

E

RNVC:

8

RNAAC:

9Z

Status:

A

MSDS:

SADC:

Part Number:

Cage Code:

RNCC:

E

RNVC:

8

RNAAC:

TX

Status:

A

MSDS:

SADC:

Part Number:

Cage Code:

RNCC:

E

RNVC:

8

RNAAC:

ZN

Status:

A

MSDS:

SADC:

Part Number:

Cage Code:

RNCC:

5

RNVC:

9

RNAAC:

TX

Status:

A

MSDS:

SADC:

Part Number:

Cage Code:

RNCC:

5

RNVC:

9

RNAAC:

TX

Status:

A

MSDS:

SADC:

Part Number:

Cage Code:

RNCC:

6

RNVC:

9

RNAAC:

YP

Status:

A

MSDS:

SADC:

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Pricing & Availability

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Catalog Drilldown
--- Electrical And Electronic Equipment Components
------ Circuit Breakers
--------- Circuit Breakers
------------ P/N 51303-025

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Last Updated: 08/09/2025