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

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

Special order item - may require extra time to fulfill and ship. Special order parts are non-returnable.

In stock
SKU: SO-20876
$190.00
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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.