Tjernlund MAC-4E Interlock Control

The Tjernlund MAC-4E Interlock Control ensures safe, reliable operation of your universal control system. This interlock control coordinates multiple burner circuits in a single setup, delivering dependable safety for HVAC applications.

Designed for universal control systems, the MAC-4E supports four burner circuits rated 18–130 V and offers broad voltage compatibility from 24–120 V. This interlock control provides robust protection and orderly start-up sequencing for furnace or boiler configurations. With its precise interlock signaling, it helps prevent unsafe start-ups and misfires, enhancing reliability in heating systems. It’s suitable for retrofit projects or new installations where universal control configurations are used.

• Type: Interlock Control
• Used On: Universal Control
• Burner Circuit: Four circuits, 18–130 V each
• Voltage Rating: 24–120 V

Engineered for professional installation, the MAC-4E interlock combines rugged construction with easy integration into existing wiring and control panels, delivering a reliable interlock solution for demanding HVAC environments.