The Nu-Calgon 5010-21 Nustart Compressor Soft Starter is an electrical device designed to reduce startup stress on compatible 230VAC, single-phase HVAC compressors with a 16–32 amp rated load current. It manages the compressor’s startup sequence to help reduce initial current demand and mechanical strain. This soft starter is commonly used in compatible residential air conditioners an... https://www.partshnc.com/nu-calgon-5010-21-nustart-compressor-soft-starter-230vac-1ph-16-32-amp-rla