Limit Control Switch – Replaces Honeywell L4064B2210 Harman 3-20-23139 – NBK-20876

NBK-20876 – Limit Control Switch – NBK The NBK-20876 Limit Control Switch is a dependable OEM-equivalent replacement designed for hearth and HVAC safety control applications. This switch helps regulate operating temperatures and provides critical overheat protection to ensure safe and efficient system performance. It is a direct replacement for the widely used Honeywell L4064B2210 limit control switch and compatible Grainger and Harman reference models. Built to meet or exceed OEM specifications, the NBK-20876 provides a precise fit and reliable temperature control, making it an ideal solution for stove technicians and HVAC professionals servicing heating equipment. Key Features OEM-Compatible Replacement: Direct replacement for Honeywell L4064B2210 Temperature Safety Control: Helps protect heating systems from overheating Reliable Operation: Supports consistent system performance and safe operation Broad Cross-Reference Support: Compatible with Grainger and Harman models Specifications SKU: 20876 Category: Limit Switch / Safety Control / Hearth Parts OEM Brand: Honeywell Replaces OEM: L4064B2210 Application: Heating system limit control switch replacement Equivalent To Honeywell: L4064B2210 Grainger: 2E820, 2E139, 5D51-78 Harman: 3-20-23139 Why Choose the NBK-20876? The NBK-20876 is a trusted limit control switch replacement for heating professionals seeking OEM-level compatibility and dependable safety performance. Its direct-fit design helps maintain proper temperature regulation and protects equipment from thermal damage. Installation Tips Disconnect all power sources before servicing limit switches or control components. Verify temperature range and mounting specifications match the original switch. Inspect wiring connections for corrosion or wear during replacement. Test system operation after installation to confirm proper safety shutoff function. Pairs Well With Thermostats, Ignition Modules, Safety Sensors, HVAC Control Boards SPECIAL ORDER NOTICE: This is a special order item sourced from NBK. Please allow 1–2 business days for processing prior to shipment.