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--></style></head><body lang="EN-US" link="blue" vlink="purple"><div class="WordSection1"><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d">Bradley:</span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d">Is he shunt trip breaker UL rated? If not, it’s not an option.</span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d">William</span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d">Miller Solar</span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d">17395 Oak Road, Atascadero, CA 93422</span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d">805-438-5600</span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d"><a href="http://www.millersolar.com/"><span style="color:blue">www.millersolar.com</span></a></span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d">CA Lic. 773985</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> RE-wrenches [mailto:<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of </b>Bradley Bassett via RE-wrenches<br><b>Sent:</b> Tuesday, July 29, 2025 3:31 PM<br><b>To:</b> RE-wrenches<br><b>Cc:</b> Bradley Bassett<br><b>Subject:</b> Re: [RE-wrenches] Battery RSD</span></p><p class="MsoNormal"> </p><div><p class="MsoNormal">What I used to specify for exterior disconnect for a battery bank was the MidNite MNLBC-W250. I believe you can connect larger battery cables to input and output bypassing the smaller busbar input. </p><div><p class="MsoNormal"><a href="https://www.midnitesolar.com/productPhoto.php?product_ID=687&productCat_ID=9&sortOrder=1&act=p">https://www.midnitesolar.com/productPhoto.php?product_ID=687&productCat_ID=9&sortOrder=1&act=p</a></p></div><div><p class="MsoNormal">If rapid shutdown is also required you can substitute the breaker with a remote trip version for the main 250A breaker. It needs a 24VDC signal to trip and is manually reset so it's not ideal, but costs far less than a true DC rated disconnect. </p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">However, it seems to me, agreeing with others here, that it should not be required in this case, that the breaker in the inverter should suffice.</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">Brad Bassett</p></div></div></div></body></html>