NEF421020-50DEGC

View detailed technical data, stock status, and sourcing information for: NEF421020-50DEGC
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5925 Circuit Breakers

National Stock Number

5925-00-062-6921

Item Name Code

00136

Assigment Date

06/17/1967 (59 years ago)

"a device with means other than fuses for automatically opening the circuit in which it is installed when the current varies from the predetermined value for which the device is set. May include provisions for manual operation. At least one set of contacts must be in series with the actuating element(s). A combination of semiconductor and passive devices may be used in lieu of contacts. For automatically operated items in which the actuating (tripping) element and contacts are not in series, see relay (as modified). For items which are operated both manually and automatically but the actuating elements and contact are not in series, see relay-switch. Excludes:circuit breaker box and magneto "breaker" assemblies. See also switch (as modified); and controller."

3.406 inches nominal overall height, 6.219 inches nominal overall length, 6.062 inches nominal body length, 2.750 inches nominal overall width, multipole-single actuator type body style

Product Characteristics

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

Body Style: multipole-single actuator type
Overall Length: 6.219 inches nominal
Overall Height: 3.406 inches nominal
Overall Width: 2.750 inches nominal
Body Length: 6.062 inches nominal
Body Width: 2.750 inches nominal
Body Height: 3.406 inches nominal
Center To Center Distance Between Terminals Parallel To Length: 5.219 inches nominal
Center To Center Distance Between Terminals Parallel To Width: 1.375 inches nominal
Unthreaded Mounting Hole Diameter: 0.225 inches nominal
Distance Between Centerlines Of Mounting Facilities Parallel To Body Length: 5.125 inches nominal
Distance Between Centerlines Of Mounting Facilities Parallel To Body Width: 1.375 inches nominal
Boss Height: 0.188 inches nominal
Pole Quantity: 2
Mounting Facility Type And Quantity: 4 unthreaded hole
Maximum Continuous Load Current Rating Per Pole: 20.0 amperes ac and 20.0 amperes dc all locations
Operating Voltage Type And Rating Per Pole In Volts: 480.0 ac and 250.0 dc all locations
Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps: 15000.0 ac and 10000.0 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
Reset Method: manual
Main Contact Tripping Mechanism Type: trip free
Manual Actuator Type And Quantity: 1 toggle
Actuator Function: trip-reset
Actuator Position Designation: between pole one and two
Inclosure Protection Type For Which Designed: fungus resistant
Trip Release Ambient Temp Rating: 50.0 celsius maximum all locations
Frequency In Hertz: 60.0 all locations
Material: plastic case
Terminal Type And Quantity: 4 compression

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
NEF421020-50DEGC	Circuit Breaker
NEF423020-50DEGC	Circuit Breaker
NEF425020-50DEGC	Circuit Breaker

FAQs

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

What is the FSCG of the NSN 5925-00-062-6921?

The FSCG of the NSN 5925-00-062-6921 is 5925

Does the NSN 5925-00-062-6921 have a Schedule B code assigned?

Yes, the Schedule B code is 8536200040

Does NSN 5925-00-062-6921 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 5925-00-062-6921 contain precious materials?

Precious metal content is unknown

Does NSN 5925-00-062-6921 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 5925-00-062-6921 was assigned to the Federal Catalog?

It was assigned 59 years ago, on Sat, Jun 17, 1967