Tjernlund MAC-1E Interlock Control

Tjernlund MAC-1E Interlock Control is a compact interlock solution designed for safe burner operation. This Type Interlock Control is used on universal control systems to ensure reliable shutoff of a single burner circuit spanning 18 to 130 volts.

Designed for HVAC and heating applications, the MAC-1E provides a dependable interlock for burner safety. It simplifies retrofits and replacements, delivering dependable protection with a straightforward installation in existing universal control setups.

Engineered for reliability in commercial and residential HVAC installations, the MAC-1E delivers a low-drift, fail-safe interlock that minimizes nuisance trips and supports long service life. Its compact form fits neatly into standard control enclosures, simplifying maintenance and upgrades.

• Single burner circuit operation for 18–130 V in universal control environments
• Burner interlock suitable for HVAC systems and safety switches
• Compatible with universal control panels for easy retrofits
• Reliable interlock action with fail-safe shutoff
• Durable construction and straightforward installation in tight spaces