Siemens MBK100A 100-Amp Main Circuit Breaker for Use in Ultimate Type Load Centers<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>100-Amp</li><li>Main breaker kit</li><li>Bolt-on type</li><li>For use with 100 or 125-Amp Ultimate type load centers</li><li>UL listed</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31MJl-u78GL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51MMTNTuMOL.jpg" noproxy>