Typical Time for Full-Cycle Sales Rep to Break Even in Manufacturing and Enterprise Non-SaaS Companies

QQ: For MM/Enterprise non-SaaS companies in here, what have you seen is the standard length of time for the salary of full-cycle sales rep to break even / turn into a net profit? Is there a standard? Asking in relation to a business in manufacturing offering a service and physical product - as I know this is a super broad question.