The Square D MGL36400 400A 3 Pole Electronic MCCB – Lug to Lug – 600V is a PowerPact M frame molded case circuit breaker designed for dependable protection in industrial and commercial power distribution systems. Featuring an advanced electronic trip unit and lug-to-lug frame configuration, this breaker provides precise overload and short-circuit protection while supporting reliable electrical performance in demanding applications. Its rugged construction and line/load terminal configuration make it suitable for switchboards, panelboards, and heavy-duty distribution equipment.

Product Specifications

• Brand: Square D
• Model: MGL36400
• Product Series: PowerPact M
• Rated Current: 400 Ampere
• Number of Poles: 3 Pole
• Breaker Type: Electronic Molded Case Circuit Breaker (MCCB)
• Mount Type: Lug to Lug
• Frame Type: M Frame
• Maximum Voltage: 600 VAC
• Trip Unit Type: Electronic Trip Unit
• Standard Lug Type: Line and Load End Terminals Standard
• Application: Industrial and Commercial Power Distribution

Technical Specifications

• Interrupting Capacity:
  • 65 kA @ 240 VAC
  • 35 kA @ 480 VAC
  • 18 kA @ 600 VAC
• Trip Setting Range: 800 – 4000
• Operating Temperature Reference: 40°C
• Protection Type: Overload and Short Circuit Protection
• Connection Type: Lug to Lug
• Terminal Configuration: Line and Load End Terminals Standard
• Electronic Protection Mechanism
• Heavy-Duty PowerPact M Construction

Voltage and Ratings

• Rated Operational Voltage: Up to 600 VAC
• Current Rating: 400A
• Pole Configuration: 3 Pole
• Interrupting Rating at 240 VAC: 65 kA
• Interrupting Rating at 480 VAC: 35 kA
• Interrupting Rating at 600 VAC: 18 kA
• Frequency: 50/60 Hz
• Temperature Calibration: 40°C

Product Data

• Manufacturer: Square D
• Product Series: PowerPact M
• Product Condition: New / Certified Reconditioned (Depending on Availability)
• Warranty: 1 Year In-House Warranty
• Connection Style: Lug to Lug
• Frame Style: M Frame
• Suitable For: Switchboards, Panelboards, and Industrial Distribution Systems
• Accessory Installation: Available at No Additional Cost with Breaker Purchase
• Packaging: Standard Industrial Packaging
• Country of Origin: USA

Important Note

Product images are provided for identification purposes only and may not represent the exact configured unit. Accessories purchased together with the breaker can be professionally installed according to your required configuration needs at no additional cost. Installation, operation, and maintenance should only be performed by qualified electrical professionals in accordance with applicable electrical codes and safety standards. Warranty coverage includes repairs, replacement parts, labor, and standard shipping required for recertification, excluding damage caused by misuse, improper installation, or normal operational wear and tear.