This automatic transfer switch connects dual 50-ampere Chint contactors with a mechanical interlock that prevents both from engaging simultaneously—a critical safety feature. The generator-dominant design automatically switches your system to generator power after a 30-second delay once shore power is lost.

The rugged plastic enclosure resists corrosion and eliminates sharp edges that plague metal housings, and LED indicators warn of reverse polarity or open-ground faults.

• 50A rating, dual contactor design with mechanical interlock
• Generator-dominant automatic transfer
• 30-second power-up delay time
• 120/240V input with wall mount (5.19″L × 8.48″W × 10.75″H)
• Reverse polarity and open-ground LED indicators
• UL listed
• 1-year limited warranty