48-303SH

View detailed technical data, stock status, and sourcing information for: 48-303SH
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5925 Circuit Breakers

National Stock Number

5925-00-874-0953

Item Name Code

00136

Assigment Date

01/01/1962 (64 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."

3.150 inches nominal body width, multipole-single actuator type body style, 1.810 inches nominal body length, 0.300 inches nominal bushing length, 2.490 inches nominal body height

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
Bushing Length: 0.300 inches nominal
Body Length: 1.810 inches nominal
Body Width: 3.150 inches nominal
Body Height: 2.490 inches nominal
Center To Center Distance Between Terminals Parallel To Length: 1.560 inches nominal
Center To Center Distance Between Terminals Parallel To Width: 2.320 inches nominal
Fragility Factor: moderately rugged
Pole Quantity: 3
Mounting Facility Type And Quantity: 1 threaded bushing
Storage Type: general purpose warehouse
Thread Quantity Per Inch: 27
Maximum Continuous Load Current Rating Per Pole: 3.0 amperes ac all locations
Operating Voltage Type And Rating Per Pole In Volts: 500.0 ac all locations
Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps: 18.0 ac all locations
Circuit Protection Type: overcurrent all locations
Trip Release Method: thermal all locations
Trip Release Characteristic: time delay 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
Internal Trip Release Configuration: series trip all locations
Nominal Thread Size: 0.375 inches
Trip Delay Time In Seconds Per Rated Continuous Current: 10.000 minimum at 200 pct and 45.000 maximum at 200 pct all locations
Inclosure Protection Type For Which Designed: general purpose
Trip Release Ambient Temp Rating: 70.0 fahrenheit nominal all locations
Unpackaged Unit Weight: 0.312 pounds nominal
Frequency In Hertz: 60.0 all locations
Material: plastic case
Thread Series Designator: uns
Terminal Type And Quantity: 6 screw

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
10000929	Circuit Breaker
48-303SH	Circuit Breaker

FAQs

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

What is the FSCG of the NSN 5925-00-874-0953?

The FSCG of the NSN 5925-00-874-0953 is 5925

Does the NSN 5925-00-874-0953 have a Schedule B code assigned?

Yes, the Schedule B code is 8536200040

Does NSN 5925-00-874-0953 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 5925-00-874-0953 contain precious materials?

Item does not contain precious metal.

Does NSN 5925-00-874-0953 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 5925-00-874-0953 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962