The Square D MX36100G molded case circuit breaker is a high-performance protection device designed for commercial and industrial electrical distribution systems requiring advanced fault protection capabilities. Built with an MX I-Line frame style and electronic non-interchangeable trip unit, this breaker features LSIG (Long-Time, Short-Time, Instantaneous, Ground Fault) trip functions for enhanced circuit protection and selective coordination. Equipped with a 250 Amp sensor size and factory-installed ARP040 rating plug, the breaker delivers precise overload, short-circuit, and ground fault protection. Its rugged molded case construction, plug-in mounting design, and high interrupting ratings ensure dependable operation and long-term reliability in demanding electrical environments.

Product Specifications

• Brand: Square D
• Model: MX36100G
• Frame Style: MX (I-Line)
• Product Type: Molded Case Circuit Breaker
• Breaker Type: Electronic
• Trip Unit: Electronic Non-Interchangeable
• Trip Functions: LSIG (Long-Time, Short-Time, Instantaneous, Ground Fault)
• Sensor Size: 250 Amp
• Amperage Rating: 100 Ampere
• Number of Poles: 3 Pole
• Mounting Type: Plug In
• Maximum Voltage Rating: 600V
• Rating Plug: ARP040 Installed Standard
• Standard Lug Type: Load End
• Operating Temperature Reference: 40°C
• Warranty: One Year

Technical Specifications

• Electronic trip unit for accurate and adjustable protection settings
• LSIG trip functions for overload, short-circuit, and ground fault protection
• Non-interchangeable trip unit for stable and consistent operation
• Factory-installed ARP040 rating plug for calibrated trip performance
• Heavy-duty molded case construction for industrial-grade durability
• Plug-in mounting configuration for efficient installation and maintenance
• 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: MX I-Line Frame
• Connection Type: Plug In
• Frame Type: M
• Pole Configuration: 3 Pole
• Lug Configuration: Load End Terminals Standard
• Installed Accessory: ARP040 Rating Plug
• Protection Functions: LSIG 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.

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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.