Square D PAF3618001021 1800A 3 Pole MCCB – LI Protection with Shunt – Bolt On Mount – 600V

The Square D PAF3618001021 is a heavy-duty molded case circuit breaker engineered for advanced industrial and commercial power distribution systems. Designed on the rugged PAF frame platform, this breaker provides reliable protection with a 1800 ampere current rating at 40°C and a 3-pole configuration suitable for three-phase electrical applications. It features LI (Long-Time and Instantaneous) trip functions for dependable overload and short-circuit protection, along with a factory-installed shunt trip for remote tripping capability and enhanced operational control. With high interrupting capacities, the PAF3618001021 is built to perform reliably in demanding high-fault environments.

Product Specification

• Manufacturer: Square D
• Model: PAF3618001021
• Frame Type: PAF Frame (P-Series)
• Breaker Type: Molded Case Circuit Breaker (MCCB)
• Current Rating: 1800 Ampere (at 40°C)
• Poles: 3 Pole
• Mounting Type: Bolt-On
• Protection Functions: LI (Long-Time & Instantaneous)
• Shunt Trip: Factory Installed
• Terminal Type: Without standard terminals
• Warranty: 1 Year (In-house warranty support)

Technical Specification

• Frame Style: PAF Industrial Heavy-Duty Frame
• Trip Unit Functions: Long-Time and Instantaneous (LI)
• Shunt Feature: Integrated shunt trip for remote breaker operation
• Connection Type: Bolt-on mounting configuration
• Operating System: Compatible with three-phase electrical systems
• Construction Type: Heavy-duty molded case design
• Application: Industrial feeders, commercial distribution systems, and main power protection
• Accessory Compatibility: Supports field-installed accessories and custom configurations
• Durability: Designed for high-current and high-fault operating environments

Voltage and Ratings

• Maximum Voltage Rating: 600 VAC
• Interrupting Capacity:
  • 65 kA @ 240 VAC
  • 50 kA @ 480 VAC
  • 42 kA @ 600 VAC
• Current Rating: 1800A
• Poles: 3 Pole
• System Type: Three-phase electrical distribution systems

Product Data

• Product Series: PAF Series
• Breaker Family: Square D MCCB
• Installation Type: Fixed bolt-on mounting
• Lug Configuration: Without standard terminals
• Special Feature: Factory-installed shunt trip mechanism
• Application Category: Industrial and commercial electrical protection
• Serviceability: Supports custom accessory installation and configuration
• Warranty Coverage: Includes repair, parts, labor, and standard shipping
• Compliance: Manufactured to Square D industrial safety and performance standards

Important Note

This product image represents a base model and is intended for identification purposes only. Accessories purchased together with the breaker can be installed at no additional cost when specific configuration details are provided during checkout. The product includes a 1-year in-house warranty covering repairs, replacement parts, labor, and standard shipping charges, excluding damage caused by misuse or normal operational wear and tear.