The Square D NX36600G 600A 3 Pole Electronic MCCB – I-Line Mount – 600V is a premium molded case circuit breaker engineered for advanced electrical protection in industrial and commercial power distribution systems. Featuring an NX (I-Line) frame design with an electronic non-interchangeable trip unit, this breaker incorporates LSIG protection functions for enhanced overload, short-time, instantaneous, and ground fault protection. Designed for high-performance applications, the NX36600G delivers exceptional fault interruption capability, system reliability, and selective coordination for critical electrical infrastructure.

Product Specifications

• Brand: Square D
• Model: NX36600G
• Rated Current: 600 Ampere
• Sensor Size: 1200 Amp
• Number of Poles: 3 Pole
• Breaker Type: Electronic Molded Case Circuit Breaker (MCCB)
• Mount Type: I-Line Mount
• Frame Type: NX (I-Line) Frame
• Trip Unit Type: Electronic Non-Interchangeable
• Trip Unit Functions: LSIG (Long Time, Short Time, Instantaneous, Ground Fault)
• Rating Plug Installed: ARP040
• Standard Lug Type: Load End
• Application: Industrial and Commercial Power Distribution

Technical Specifications

• Interrupting Capacity:
  • 125 kA @ 240 VAC
  • 100 kA @ 480 VAC
  • 65 kA @ 600 VAC
• Operating Temperature Reference: 40°C
• Protection Functions: LSIG Protection
• Ground Fault Protection Included
• Terminal Configuration: Load End Terminals Standard
• Electronic Trip Technology for Precision Protection
• High Fault Withstand Performance
• Industrial Grade Heavy-Duty Construction

Voltage and Ratings

• Rated Operational Voltage: Up to 600 VAC
• Current Rating: 600A
• Sensor Rating: 1200A
• Pole Configuration: 3 Pole
• Interrupting Rating at 240 VAC: 125 kA
• Interrupting Rating at 480 VAC: 100 kA
• Interrupting Rating at 600 VAC: 65 kA
• Frequency: 50/60 Hz
• Temperature Calibration: 40°C

Product Data

• Manufacturer: Square D
• Product Condition: New / Certified Reconditioned (Based on Availability)
• Warranty: 1 Year In-House Warranty
• Frame Style: NX (I-Line)
• Mounting System: I-Line Configuration
• Suitable For: Industrial Panels, Switchboards, and 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 for reference and identification purposes only and may not represent the exact configured unit. Accessories purchased with the breaker can be professionally installed to meet your required configuration at no additional cost. Installation, operation, and maintenance should only be performed by qualified electrical technicians following applicable electrical codes and safety standards. Warranty coverage includes repairs, labor, replacement parts, and standard shipping required for recertification, excluding damage resulting from 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.