NSN 5925-00-087-9946 NF631050R, 00-087-9946, 000879946
Product Details | CIRCUIT BREAKER
5925-00-087-9946 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.
Part Alternates: NF631050R, 5925-00-087-9946, 00-087-9946, 5925000879946, 000879946
Electrical and Electronic Equipment Components | Circuit Breakers
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 59 | 01 JAN 1961 | 00-087-9946 | 00136 ( CIRCUIT BREAKER ) |
Drawings & Photos | NSN 5925-00-087-9946
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Technical Data | NSN 5925-00-087-9946
| Characteristic | Specifications |
|---|---|
| POLE QUANTITY | 3 |
| MAXIMUM CONTINUOUS LOAD CURRENT RATING PER POLE | 50.0 AMPERES AC ALL LOCATIONS |
| OPERATING VOLTAGE TYPE AND RATING PER POLE IN VOLTS | 600.0 AC ALL LOCATIONS |
| FREQUENCY IN HERTZ | 60.0 ALL LOCATIONS |
| MAXIMUM INTERRUPTING CAPACITY CURRENT TYPE AND RATING PER POLE IN AMPS | 15000.0 AC ALL LOCATIONS |
| CIRCUIT PROTECTION TYPE | OVERCURRENT ALL LOCATIONS |
| TRIP RELEASE METHOD | THERMAL-MAGNETIC ALL LOCATIONS |
| TRIP RELEASE AMBIENT TEMP RATING | 25.0 DEG CELSIUS NOMINAL ALL LOCATIONS |
| TRIP RELEASE CHARACTERISTIC | TIME DELAY ALL LOCATIONS |
| TRIP DELAY TIME IN SECONDS PER RATED CONTINUOUS CURRENT | 70.000 MINIMUM AT 150 PCT AND 240.000 MAXIMUM AT 150 PCT AND 28.000 MINIMUM AT 200 PCT AND 63.000 MAXIMUM AT 200 PCT AND 9.000 MINIMUM AT 300 PCT AND 22.000 MAXIMUM AT 300 PCT AND 3.000 MINIMUM AT 500 PCT AND 3.000 NOMINAL AT 500 PCT ALL LOCATIONS |
| ULTIMATE TRIP RATING OF CONTINUOUS CURRENT RATING PER POLE IN PERCENT | 120.0 ALL LOCATIONS |
| RESET METHOD | MANUAL |
| MAIN CONTACT TRIPPING MECHANISM TYPE | TRIP FREE |
| BODY STYLE | 21B MULTIPOLE-SINGLE ACTUATOR TYPE |
| BODY LENGTH | 9.500 INCHES NOMINAL |
| BODY WIDTH | 4.500 INCHES NOMINAL |
| BODY HEIGHT | 5.390 INCHES NOMINAL |
| CENTER TO CENTER DISTANCE BETWEEN TERMINALS PARALLEL TO LENGTH | 8.094 INCHES NOMINAL |
| CENTER TO CENTER DISTANCE BETWEEN TERMINALS PARALLEL TO WIDTH | 1.375 INCHES NOMINAL |
| DISTANCE BETWEEN CENTERLINES OF MOUNTING FACILITIES PARALLEL TO BODY LENGTH | 7.250 INCHES NOMINAL |
| DISTANCE BETWEEN CENTERLINES OF MOUNTING FACILITIES PARALLEL TO BODY WIDTH | 1.375 INCHES NOMINAL |
| BOSS HEIGHT | 0.250 INCHES NOMINAL |
| CASE MATERIAL | PLASTIC |
| MOUNTING FACILITY TYPE AND QUANTITY | 4 UNTHREADED HOLE |
| UNTHREADED MOUNTING HOLE DIAMETER | 0.190 INCHES NOMINAL |
| MANUAL ACTUATOR TYPE AND QUANTITY | 1 ROTARY |
| ACTUATOR FUNCTION | TRIP-RESET |
| ACTUATOR POSITION DESIGNATION | AT POLE ONE |
| EXTERNAL ACTUATOR LINKAGE ARRANGEMENT | ONE, TWO, AND THREE LINKED |
| TERMINAL TYPE AND QUANTITY | 6 SCREW |
| SPECIAL FEATURES | MAIN CONTACTS SILVER,ARCING CONTACTS SILVER PLATED BRASS |
| III ARC QUENCHING METHOD | DEION |
| MANUFACTURERS CODE | 02201 |
| DESIGN CONTROL REFERENCE | NF631050R |
Restrictions/Controls & Freight Information | NSN 5925-00-087-9946
| Category | Code | Description |
|---|---|---|
| Hazardous Material Indicator Code | P | There is no information in the HMIS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product |
| Demilitarization Code: | A | Non-Munitions List Item/ Non-Strategic List Item - Demilitarization not required. |
| Precious Metals Indicator Code: | U | Precious metal type is unknown |
| Criticality Code: | X | The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. |
| Category | Code | Description |
|---|---|---|
| No Freight Information | ||