We've received your request for 121B20-B2M (described as Circuit Breaker), manufactured by Cooper Bussmann Inc with CAGE code 1JY78. This part is registered under NSN 5925-01-600-7960, classified in FSG 59 Electrical and Electronic Equipment Components / FSC 5925 Circuit Breakers. Our verification process will confirm traceability through supporting identifiers including NIIN 01-600-7960, NCB code 01 (origin: USA), and INC 00136. Please submit your formal quotation request to proceed.
Thank you for choosing Aerospace Exchange for your 121B20-B2M requirements. We specialize in authenticated aerospace components, offering both NSN-tracked military parts and commercial equivalents, all validated through our rigorous sourcing protocols.
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| NSN | FSC | NIIN | CLS | Hazmat | DEMIL | Cancelled NSN |
|---|---|---|---|---|---|---|
| 5925-01-600-7960 Item PartTypeName: CIRCUIT BREAKER | 5925 | 016007960 | P | A | ||
| CIIC | HCC | ESD | PMIC | Criticality | ENAC | |
| A | A | 0 | ||||
| Part Number | ISC | RNVC | RNCC | HCC | MSDS | SADC |
| 121B20-B2M | 5 | 9 | 5 |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAQL | BODY STYLE | SINGLE POLE TYPE |
| ADAQ | BODY LENGTH | 1.240 INCHES NOMINAL |
| ADAU | BODY HEIGHT | 0.640 INCHES NOMINAL |
| ADTV | CASE MATERIAL | METAL |
| AEBV | UNTHREADED MOUNTING HOLE DIAMETER | 0.196 INCHES NOMINAL |
| AJWX | MOUNTING SURFACE TO TERMINAL END DISTANCE | 1.250 INCHES NOMINAL |
| AXHR | MOUNTING FACILITY TYPE AND QUANTITY | 2 UNTHREADED HOLE |
| CMLP | THREAD QUANTITY PER INCH | 32 |
| CPRG | MAXIMUM INTERRUPTING CAPACITY CURRENT TYPE AND RATING PER POLE IN AMPS | 1.5 DC ALL LOCATIONS |
| CPRH | CIRCUIT PROTECTION TYPE | OVERCURRENT ALL LOCATIONS |
| CPRQ | RESET METHOD | AUTOMATIC |
| CPSM | INTERNAL TRIP RELEASE CONFIGURATION | SERIES TRIP ALL LOCATIONS |
| CQQC | TRIP RELEASE DUTY CYCLE | CONTINUOUS ALL LOCATIONS |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | SERIES 12X SHORTSTOP CIRCUIT BREAKER,20AMP DC |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| ABMK | OVERALL WIDTH | 0.790 INCHES NOMINAL |
| ADAT | BODY WIDTH | 0.790 INCHES NOMINAL |
| AEBP | CENTER TO CENTER DISTANCE BETWEEN TERMINALS PARALLEL TO LENGTH | 0.690 INCHES NOMINAL |
| AEBY | DISTANCE BETWEEN CENTERLINES OF MOUNTING FACILITIES PARALLEL TO BODY LENGTH | 1.560 INCHES NOMINAL |
| AJEC | BOSS HEIGHT | 0.560 INCHES NOMINAL |
| AKPX | POLE QUANTITY | 1 |
| CPLM | MAXIMUM CONTINUOUS LOAD CURRENT RATING PER POLE | 20.0 AMPERES DC ALL LOCATIONS |
| CPRF | OPERATING VOLTAGE TYPE AND RATING PER POLE IN VOLTS | 14.0 DC ALL LOCATIONS AND 28.0 DC ALL LOCATIONS |
| CPRJ | TRIP RELEASE METHOD | THERMAL ALL LOCATIONS |
| CPRL | TRIP RELEASE CHARACTERISTIC | TIME DELAY ALL LOCATIONS |
| CQJX | NOMINAL THREAD SIZE | 0.190 INCHES |
| CRCF | TRIP RELEASE AMBIENT TEMP RATING | -40.0 DEG FAHRENHEIT MINIMUM ALL LOCATIONS AND 185.0 DEG FAHRENHEIT MAXIMUM ALL LOCATIONS |
| End Use : 20005 | Electric apparatus |
|---|---|
| Schedule B : 8536200040 (NAICS 335313) | Automatic circuit breakers, for a voltage not exceeding 1, 000 v, nesoi |
| SITC : 77252 | Automatic circuit breakers for a voltage not exceeding 1, 000 volts |
| ADPE | Represents items with no adp components |
|---|---|
| CRITL | The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. |
| ESD | A - No known electrostatic discharge (esd) or electromagnetic interference (emi) sensitivity. |
| HMIC | P - Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of federal standard 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. |
| PMIC | A - Item does not contain precious metal. |
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AS9120B and ISO 9001:2015 |
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Aviation Suppliers Association Member |
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FAA AC 0056B Accredited |
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AS 6081:2012 Certification |
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ESD S20.20-2014 Certification |
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