657D789G22

View detailed technical data, stock status, and sourcing information for: 657D789G22
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5925 Circuit Breakers

National Stock Number

5925-00-948-0040

Item Name Code

04558

Assigment Date

03/30/1966 (60 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.

5.500 inches nominal overall width, rectangular dimensional envelope body style, 4.062 inches nominal overall height, 0.281 inches nominal unthreaded mounting hole diameter, 10.125 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: 10.125 inches nominal
Overall Height: 4.062 inches nominal
Overall Width: 5.500 inches nominal
Unthreaded Mounting Hole Diameter: 0.281 inches nominal
Pole Quantity: 3
Mounting Facility Type And Quantity: 4 unthreaded hole
Storage Type: general purpose warehouse
Maximum Continuous Load Current Rating Per Pole: 175.0 amperes ac and 175.0 amperes dc all locations
Operating Voltage Type And Rating Per Pole In Volts: 600.0 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
Trip Release Ambient Temp Rating: 40.0 celsius nominal all locations
Frequency In Hertz: 60.0 all locations
Terminal Type And Quantity: 6 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
459D984G22	Circuit Breaker Tripper
657D789G22	Circuit Breaker Tripper
HKA3175T	Circuit Breaker Tripper
KA31757	Circuit Breaker Tripper
KA3175T	Circuit Breaker Tripper
S657D789G22	Circuit Breaker Tripper

FAQs

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

What is the FSCG of the NSN 5925-00-948-0040?

The FSCG of the NSN 5925-00-948-0040 is 5925

Does the NSN 5925-00-948-0040 have a Schedule B code assigned?

Yes, the Schedule B code is 8538907020

Does NSN 5925-00-948-0040 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 5925-00-948-0040 contain precious materials?

Item does not contain precious metal.

Does NSN 5925-00-948-0040 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 5925-00-948-0040 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Wed, Mar 30, 1966