When you need both a make and break signal from the same contactor action, this combination auxiliary (1 NO + 1 NC) keeps wiring simple and panel space tidy. It’s a great fit for HVAC/R controls where you want one contact to provide run confirmation to a controller while the other simultaneously handles an interlock or disables an alternate stage. In service work, it’s especially useful on retrofit jobs - adding monitoring or control feedback without replacing the main contactor or adding separate relays. Because it provides two different states, it supports more flexible sequencing. This item is part of the A2L‑compliant auxiliary switch family referenced alongside compatible contactors, supporting current applications where A2L considerations matter and where standardizing on updated auxiliary part numbers helps reduce confusion during replacements.