Westinghouse MDS3800F Molded Case Circuit Breaker

The Westinghouse MDS3800F is a 3-pole molded case circuit breaker built for high-capacity industrial power distribution, delivering robust three-phase protection in switchgear assemblies, motor control centers, and large distribution panels while safeguarding feeders and heavy-duty motors in demanding facilities. Rated at 800 A and 600 V, it operates on 50/60 Hz and uses a thermal-magnetic trip mechanism within an industrial-duty Molded Case Circuit Breaker frame with mechanical lug terminals for secure line and load connections. Common applications span manufacturing facilities, industrial automation systems, HVAC equipment, and motor control applications where reliable fault interruption and safe, continuous operation are critical for uptime in harsh industrial environments. For maintenance planning, the MDS3800F is typically used for replacement, retrofit, preventive maintenance, and heavy-duty upgrades in industrial power distribution networks, with common replacements including Eaton JD3800F, Allen-Bradley 1494F-M800, and Square D LJL36800.