SM3HK0-25-250-400-1

View detailed technical data, stock status, and sourcing information for: SM3HK0-25-250-400-1
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5925 Circuit Breakers

National Stock Number

5925-00-189-4315

Item Name Code

00136

Assigment Date

03/01/1971 (55 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."

0.375 inches maximum bushing length, single pole type body style, 1.500 inches maximum body length, 0.625 inches maximum body width, +0.3503 to 0.3537 inches thread pitch diameters

Product Characteristics

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

Thread Pitch Diameters: +0.3503 to 0.3537 inches
Body Style: single pole type
Bushing Length: 0.375 inches maximum
Body Length: 1.500 inches maximum
Body Width: 0.625 inches maximum
Center To Center Distance Between Terminals Parallel To Length: 0.875 inches nominal
Switch Contact Arrangement: single pole, double throw
Fragility Factor: moderately rugged
Mounting Surface To Terminal End Distance: 1.605 inches maximum
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
Thread Quantity Per Inch: 32
Maximum Continuous Load Current Rating Per Pole: 250.0 milliamperes ac single location
Operating Voltage Type And Rating Per Pole In Volts: 250.0 ac single location
Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps: 300.0 ac single location
Circuit Protection Type: overcurrent single location
Trip Release Method: magnetic-hydraulic single location
Trip Release Characteristic: time delay single location
Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent: 115.0 single location
Ultimate Trip Time Per Pole In Seconds: 6.500 minimum and 30.000 maximum 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
Auxiliary Switch Function And Quantity: 1 control
Internal Trip Release Configuration: series trip single location
Nominal Thread Size: 0.375 inches
Switch Location And Position Designation: external at pole one
Trip Delay Time In Seconds Per Rated Continuous Current: 1.000 minimum at 200 pct and 4.000 maximum at 200 pct single location
Inclosure Protection Type For Which Designed: explosion resistant
Switch Terminal Type: double screw
Switch Current Rating And Type In Amps: 1.0 ac and 0.5 dc
Switch Voltage Rating And Type In Volts: 125.0 ac and 50.0 dc
Unpackaged Unit Weight: 2.100 ounces nominal
Frequency In Hertz: 400.0 single location
Thread Series Designator: unef
Terminal Type And Quantity: 2 wire hook

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
AP1-1R4-2-251	Circuit Breaker
SM-A-569574-36	Circuit Breaker
SM3HK0-25-250-400-1	Circuit Breaker

FAQs

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

What is the FSCG of the NSN 5925-00-189-4315?

The FSCG of the NSN 5925-00-189-4315 is 5925

Does the NSN 5925-00-189-4315 have a Schedule B code assigned?

Yes, the Schedule B code is 8536200040

Does NSN 5925-00-189-4315 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 5925-00-189-4315 contain precious materials?

Item does not contain precious metal.

Does NSN 5925-00-189-4315 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 5925-00-189-4315 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Mon, Mar 1, 1971