*PLUMBERSSTOCK EXPERT* responded:
Good day! We contacted ADP and they informed us that the size of the breaker is 45 amps. However, they suggest that you should use the 65500905 7.5 Kw heat kit with the terminal block, and then the breaker at the panel. This product is not yet on our website, but if you're interested in purchasing the ADP 65500905, please contact one of our knowledgeable customer service representatives @ 435-868-4020 between 8:00 am and 7:00 pm MST or through e-mail at email@example.com. They will be happy to assist you with your order. Please don't hesitate to contact us if you have any further question about this product. We thank you for choosing PlumbersStock.com. Have an awesome day!