Square D MEF36200LSG 200A 3-Pole 600 V Circuit Breaker Potential Transformer

Engineered for demanding industrial environments, the Square D MEF36200LSG is a 200A, 3-pole circuit breaker designed to protect 600V three-phase power systems. Built by Square D (Schneider Electric), it delivers dependable overcurrent protection for feeders, motors, and switchgear in harsh operating conditions.

Key specifications

• Current rating: 200 A
• Poles: 3
• Voltage rating: 600 V
• Part number: MEF36200LSG
• Brand: Square D (Schneider Electric)
• Configuration: 3-pole, suitable for three-phase distribution panels and switchgear

Why this model stands out

• Designed for fast, reliable interruption in 3-phase circuits up to 600V, helping protect downstream equipment from faults and overloads.
• Rugged construction and proven reliability from the Square D lineage, a staple in industrial power protection.
• Easy replacement in compatible Square D panelboards and switchgear, reducing downtime during maintenance or system upgrades.

Ideal use cases

• Commercial and industrial facilities with 3-phase 600V distribution, such as manufacturing lines, processing plants, and large commercial buildings.
• Data centers or server rooms with demanding power protection requirements for feeders and critical equipment.
• Panelboard and switchgear installations where clear, coordinated protection is essential for uptime and safety.

Practical guidance

• Ensure compatibility with your existing Square D panels and wiring practices. Install per local electrical codes and the manufacturer’s installation instructions.
• Pair with appropriate feeders and protective relays in your protection scheme to maximize coordination and minimize nuisance trips.

Note: The MEF36200LSG is compatible with standard metering and protection schemes that utilize potential transformers in three-phase, 600V networks.