ETN8251

View detailed technical data, stock status, and sourcing information for: ETN8251
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5925 Circuit Breakers

National Stock Number

5925-00-071-7689

Item Name Code

04558

Assigment Date

07/18/1967 (59 years ago)

An electromechanical device which releases the holding mechanism and permits the contacts of a circuit breaker to open. It is a replacement part of a circuit breaker. Does not include relays. See also thermal release, circuit breaker.

4.844 inches nominal overall width, 3.109 inches nominal overall height, moderately rugged fragility factor, rectangular dimensional envelope body style, 8.469 inches nominal overall length

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Body Style: rectangular dimensional envelope
Overall Length: 8.469 inches nominal
Overall Height: 3.109 inches nominal
Overall Width: 4.844 inches nominal
Fragility Factor: moderately rugged
Pole Quantity: 3
Arc Quenching Method: magnetic blowout
Mounting Facility Type And Quantity: 6 terminal
Storage Type: general purpose warehouse
Features Provided: adjustable trip release
Maximum Continuous Load Current Rating Per Pole: 400.0 amperes ac and 400.0 amperes dc all locations
Operating Voltage Type And Rating Per Pole In Volts: 500.0 ac and 250.0 dc all locations
Circuit Protection Type: overcurrent all locations
Trip Release Method: thermal-magnetic all locations
Trip Release Characteristic: instantaneous all locations
Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent: 125.0 all locations
Manual Actuator Type And Quantity: 1 toggle
Actuator Function: trip-reset
Actuator Position Designation: at pole two
Adjustable Trip Setting Current Range Per Pole In Amps: +3200.0 to 5600.0 ac and +3200.0 to 5600.0 dc all locations
Trip Release Ambient Temp Rating: 50.0 celsius nominal all locations
Unpackaged Unit Weight: 4.100 pounds nominal
Frequency In Hertz: 60.0 all locations
Terminal Type And Quantity: 6 threaded stud

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
ETN8251	Circuit Breaker Tripper

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5925-00-071-7689?

The FSCG of the NSN 5925-00-071-7689 is 5925

Does the NSN 5925-00-071-7689 have a Schedule B code assigned?

Yes, the Schedule B code is 8538907020

Does NSN 5925-00-071-7689 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5925-00-071-7689 contain precious materials?

Item does not contain precious metal.

Does NSN 5925-00-071-7689 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 5925-00-071-7689 was assigned to the Federal Catalog?

It was assigned 59 years ago, on Tue, Jul 18, 1967