The Square D MXF36100 molded case circuit breaker is a compact and dependable protection device designed for commercial and industrial electrical distribution systems. Built with an MXF frame style and electronic non-interchangeable trip unit, this breaker features LSI (Long-Time, Short-Time, Instantaneous) trip functions for precise and adjustable circuit protection. Designed with a 250 Amp sensor size and front-connected configuration, the breaker delivers reliable overload and short-circuit protection while supporting flexible installation requirements. Its rugged molded case construction, bolt-on mounting design, and high interrupting ratings ensure dependable operation and long-term reliability in demanding electrical applications.

Product Specifications

• Brand: Square D
• Model: MXF36100
• Frame Style: MXF
• Product Type: Molded Case Circuit Breaker
• Breaker Type: Electronic
• Trip Unit: Electronic Non-Interchangeable
• Trip Functions: LSI (Long-Time, Short-Time, Instantaneous)
• Sensor Size: 250 Amp
• Amperage Rating: 100 Ampere
• Number of Poles: 3 Pole
• Mounting Type: Bolt On
• Connection Style: Front Connected
• Maximum Voltage Rating: 600V
• Terminal Configuration: No Terminals Standard
• Operating Temperature Reference: 40°C
• Warranty: One Year

Technical Specifications

• Electronic trip unit for accurate and adjustable circuit protection
• LSI trip functions for overload and short-circuit protection
• Non-interchangeable trip unit for stable operating characteristics
• Front-connected design for installation flexibility and accessibility
• Heavy-duty molded case construction for industrial-grade durability
• Bolt-on mounting configuration for secure installation
• High interrupting capacity for enhanced electrical safety
• Suitable for commercial and industrial power distribution systems

Voltage and Ratings

• Rated Current: 100A
• Sensor Size: 250A
• Rated Maximum Voltage: 600V
• Interrupting Capacity: 65kA @ 240 VAC
• Interrupting Capacity: 65kA @ 480 VAC
• Interrupting Capacity: 25kA @ 600 VAC
• Trip Setting Range: Adjustable 2.5–8 Times Continuous Ampere Rating
• Frequency Rating: 50/60Hz

Product Data

• Manufacturer: Square D
• Product Category: Molded Case Circuit Breaker
• Series: MXF Frame
• Connection Type: Bolt On
• Connection Style: Front Connected
• Frame Type: M
• Pole Configuration: 3 Pole
• Terminal Configuration: No Standard Terminals Included
• Protection Functions: LSI Protection
• Condition Support: Certified Reconditioned and New Surplus
• Included Warranty Coverage: Shipping, repairs, parts, and labor for recertification
• Application: Commercial and Industrial Electrical Distribution Systems

Important Note

The product image shown represents a base model and is intended for identification purposes only. Accessories purchased together with the breaker can be installed at no additional cost according to customer configuration requirements when installation instructions are provided during checkout. Installation, operation, and maintenance must be performed by qualified electrical personnel in accordance with applicable electrical standards and manufacturer guidelines. Warranty coverage excludes damage caused by misuse, improper installation, or normal wear and tear.

Returns are easy

You may return items within 30 days of delivery for a refund.

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My Circuit Breakers provides a comprehensive 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer). Extended warranties are available upon request.