Square D LI36350 - 350 A, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D LI36350 from AmpState—a 350 A, 3-pole plug-in molded case circuit breaker engineered for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for speed, reliability, and durable performance, this unit is the plug-in solution you need for fast installations and straightforward replacements in demanding electrical environments.

Fast, reliable plug-in protection

• Fast plug-in connection: Designed for quick seating into compatible Square D panelboards, reducing commissioning time and downtime during upgrades or service work.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection by responding to both overloads and short circuits, even as ambient conditions vary.
• Three-pole design: Ensures synchronized protection across all three conductors, maintaining balanced protection in three-phase systems.
• OEM-ready compatibility: Engineered to work seamlessly with matching Square D load centers and panelboards for reliable performance and proper fitment.
• Versatile applications: Suitable for residential, commercial, and light industrial settings where high-capacity protection is required.

Technical specifications at a glance

• Manufacturer: Square D
• Part Number: LI36350
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 350 A
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use scenarios

• Upgrading panelboards in multi-unit residential buildings where higher ampacity and reliable protection are essential.
• Commercial spaces with three-phase distribution that require synchronized trip characteristics for safety and code compliance.
• Light industrial applications where quick replacement and minimum downtime are priorities during maintenance or upgrades.

Installation tips and compatibility

• Verify panelboard compatibility with matching OEM load centers to ensure proper bus connection and trip coordination.
• Follow manufacturer torque specifications on terminal connections to maintain secure, fade-free performance.
• Plan for correct placement within the distribution scheme—this 3-pole unit should be used where coordinated protection across all conductors is needed.
• Adhere to local electrical codes and lockout/tagout practices during installation and servicing.