--- title: Series 252 | Mechanical Products description: "Mechanical Products series 252 UL489 Push-to-Reset circuit breaker: the smallest unit available capable of withstanding a 5000A short circuit." --- [Need help?](https://www.mechprod.com/contact) [** 630.953.4100](tel:630.953.4100) [** Email](mailto:helpme@mechprod.com) [![mp-Logo.png](https://www.mechprod.com/hs-fs/hubfs/MP_2017/Image/mp-Logo.png?width=119&name=mp-Logo.png "mp-Logo.png")](https://www.mechprod.com/) [![mp-Logo](https://www.mechprod.com/hs-fs/hubfs/MP_2017/Image/sticky-logo.png?width=119&name=sticky-logo.png "mp-Logo")](https://www.mechprod.com/) [** Find a Distributor](https://www.mechprod.com/circuit-breaker-distributors) [**](https://www.mechprod.com/series-252#search-popup) ## Search Mechanical Products Website Search ![MP-Series02-Hero](https://www.mechprod.com/hs-fs/hubfs/MP_2017/Image/Products-Overview_Hero.jpg?width=1440&name=Products-Overview_Hero.jpg "MP-Series02-Hero") # MP Series 02 Model 252 Push-to-Reset Circuit Breaker ## High Interrupt in a Small Package The Model 252 thermal circuit breaker is the smallest UL489 unit available capable of withstanding a 5Ka short circuit. Such outstanding performance allows this circuit breaker to be specified in tight enclosures where high fault current protection is vital. It eliminates the necessity for other protective devices in series. Suitable for branch circuit protection. ![MP-Series252-Intro](https://www.mechprod.com/hs-fs/hubfs/MP_2017/Image/MPSeries-252-bottom.jpg?width=590&name=MPSeries-252-bottom.jpg "MP-Series252-Intro") Product Features ![MP-Series252-Features](https://www.mechprod.com/hs-fs/hubfs/MP_2017/Image/MPSeries-252-bottom.jpg?width=590&name=MPSeries-252-bottom.jpg "MP-Series252-Features") 1 #### Key Features - 120VAC protection, and superior current interrupt capabilities - Trip Free - Push-to-Reset - Double break mechanism allows for high current interrupt capability - Cadmium free contacts 2 #### Ratings - Voltage-120VAC - Current- 10-20 Amps - Short Circuit Interrupt - 5Ka/120VAC 3 #### Testing Performed - Vibration: 8g force  - Shock: 25g force  - Corrosion: 96hr salt-spray - Humidity: 240hr at 95% RHH ### Additional Information on MP Series 02 ![Data-Sheet](https://www.mechprod.com/hs-fs/hubfs/MP_2017/Image/Product_icon1.png?width=53&height=46&name=Product_icon1.png) #### Data Sheet Our data sheet includes physical configuration details, operating characteristics, and more. 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