The Square D MX36100 molded case circuit breaker is a compact and reliable protection device designed for commercial and industrial electrical distribution systems. Built with an MX I-Line frame style and an electronic non-interchangeable trip unit, this breaker features LSI (Long-Time, Short-Time, Instantaneous) trip functions for precise and adjustable circuit protection. Equipped with a 250 Amp sensor size and factory-installed ARP040 rating plug, the breaker delivers dependable overload and short-circuit protection while maintaining operational flexibility. Its rugged molded case construction, plug-in mounting configuration, and high interrupting capacity make it suitable for demanding electrical applications requiring advanced protection performance.

Product Specifications

• Brand: Square D
• Model: MX36100
• Frame Style: MX (I-Line)
• 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: 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
• LSI trip functions for enhanced system coordination and fault protection
• Non-interchangeable trip unit design for stable protection performance
• Factory-installed ARP040 rating plug for calibrated trip settings
• Heavy-duty molded case construction for industrial reliability
• Plug-in mounting configuration for simplified installation and maintenance
• High interrupting capacity for improved electrical system safety
• Suitable for commercial and industrial distribution applications

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
• 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.