--- title: Series 87 | Mechanical Products description: MP Series 87 | 25 to 250A Heavy Duty CB / Marine Rated Circuit Breaker (MRCB) Switchable 48V Type III / Cross for Buss 187 and Blue Sea / Made in USA --- [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/) - [Products](https://www.mechprod.com/products) - [Switchable Circuit Breakers](https://www.mechprod.com/switchable-circuit-breakers) - [Push-to-Reset Circuit Breakers](https://www.mechprod.com/push-to-reset-circuit-breakers) - [Waterproof Circuit Breakers](https://www.mechprod.com/waterproof-circuit-breakers) - [Auto Reset Circuit Breakers](https://www.mechprod.com/auto-reset-circuit-breakers) - [Disconnect Circuit Breakers](https://www.mechprod.com/disconnect-circuit-breakers) - [Circuit Breaker Accessories](https://www.mechprod.com/circuit-breaker-accessories) - [Part Cross Reference](https://www.mechprod.com/part-cross-reference) - [Check Stock](http://dilp.netcomponents.com/mechprod.html) - [3D Models](https://www.mechprod.com/3d-models-catalog) - [About](https://www.mechprod.com/about-us) - [Testing](https://www.mechprod.com/circuit-breaker-testing) - [Engineering](https://www.mechprod.com/engineering-capabilities) - [Industries](https://www.mechprod.com/industries-served) - [Resources](https://www.mechprod.com/resources) - [Distributor Stock](https://dilp.netcomponents.com/mechprod.html) - [Blog](https://www.mechprod.com/new-blog) - [Contact](https://www.mechprod.com/contact) [** Find a Distributor](https://www.mechprod.com/circuit-breaker-distributors) [**](https://www.mechprod.com/series-87#search-popup) ## Search Mechanical Products Website Search ![MP-Series17-Hero](https://www.mechprod.com/hs-fs/hubfs/MP_2017/Image/Products-Overview_Hero.jpg?width=1440&name=Products-Overview_Hero.jpg "MP-Series17-Hero") # MP Series 87 Heavy Duty Marine Rated Circuit Breaker ## Switchable Circuit Breaker Rated to 250 Amps 56VDC Max up to 200A This heavy duty switchable high amp circuit breaker features a manual reset with On-Off switch function. It is available in panel mount or surface mount options. It was designed with a wide amp range from 25 to 250 Amp and with two terminal stud sizes, 5/16"-18 or 3/8"-16, allowing the user to right-size wire for higher amp ratings. The series 87 switchable circuit breaker was designed as a drop-in replacement with enhancements such as more spacing around the studs to accommodate terminal lugs, a double set of contacts, more copper and silver to better clear faults, and a circular panel cut out for ease of use. SAE & ABYC Compliant and Cadmium free. MP Series 87 is manufactured in the USA. ![875-S1-150-2_LeverAction](https://www.mechprod.com/hs-fs/hubfs/875-S1-150-2_LeverAction.png?width=944&name=875-S1-150-2_LeverAction.png "875-S1-150-2_LeverAction") PRODUCT FEATURES ![875-Dual](https://www.mechprod.com/hs-fs/hubfs/images/Series%2087/875-Dual.png?width=650&name=875-Dual.png "875-Dual") 1 #### Key Features - Made in the USA - 56VDC up to 200A, >200A 48VDC for Type III Vehicle Protection - 5/16" & New 3/8" stainless steel terminal studs & sems nuts - On-Off Switch Function - Ignition Protected - SAE & ABYC Compliant - IP67 - Next-Generation Evolution 2 #### Ratings - Voltage to- 56VDC Max - Current- 25-250 Amps - Short Circuit Interrupt to – (see datasheet) 3 #### Testing Performed - Vibration: 8g force  - Shock: 25g force  - Corrosion: 96hr salt-spray - Humidity: 240hr at 95% RH ### Additional Information on MP Series 87 ![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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