Miniature Circuit Breaker Leave a reply Miniature Circuit Breaker MCB with patented unique SLR (Slide Latch-Release) feature for tool free removal from DIN rail. It also allows individual MCBs to be removed from bus mounted assembly. View Catalogue : 5SL Miniature Circuit Breaker Rental £Retail £ Category: Siemens Post navigation ← Distribution Boards MV and EHV XLPE Cables → Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.