The Square D NX36600 600A 3 Pole Electronic MCCB – I-Line Mount – 600V is a high-performance molded case circuit breaker designed for advanced protection and reliable operation in industrial and commercial electrical distribution systems. Built with an NX (I-Line) frame style and an electronic non-interchangeable trip unit, this breaker features LSI protection functions for enhanced system coordination and fault management. With superior interrupting capacity and durable construction, the NX36600 is ideal for critical power applications requiring dependable overload, short-circuit, and selective coordination protection.

Product Specifications

• Brand: Square D
• Model: NX36600
• 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: LSI (Long Time, Short Time, Instantaneous)
• 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: LSI Protection
• Terminal Configuration: Load End Terminals Standard
• Electronic Trip Technology for Accurate Protection
• High Fault Withstand Capability
• Heavy-Duty Industrial Grade 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 (Subject to Availability)
• Warranty: 1 Year In-House Warranty
• Frame Style: NX (I-Line)
• Mounting System: I-Line Configuration
• Suitable For: Switchboards, Industrial Panels, and Power 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 represent a standard or base configuration. Accessories ordered together with the breaker can be installed according to your required specifications at no additional cost. Installation, maintenance, and inspection should only be performed by qualified electrical personnel in accordance with local electrical regulations and safety standards. Warranty coverage includes repairs, labor, parts, and standard shipping necessary for recertification, excluding damage caused by misuse, mishandling, or normal operational wear.