The AllPoints Foodservice Parts & Supplies 421728 Defrost Termination Switch is designed for reliable temperature control in refrigeration systems. Featuring 8" leads and 3/16" push-on terminals, this switch ensures easy installation and secure connections. It operates by opening at 55°F (13°C) and closing at 40°F (4°C), making it ideal for maintaining optimal defrost cycles. The included mounting clip facilitates straightforward attachment, while its robust construction supports a voltage rating of 600V. This switch is compatible with Delfield models 400, 4000, and VFR1-S, providing a dependable solution for your foodservice equipment needs.