Square D LJA36400U33X — 400A 3-Pole 600V I-Line Solid-State Molded Case Circuit Breaker (MCCB)
Square D LJA36400U33X — 400A 3-Pole 600V I-Line Solid-State Molded Case Circuit Breaker (MCCB)
Product images are representative only. Actual product may vary.
The Square D LJA36400U33X is a 400-amp, 3-pole, 600V solid-state (electronic trip) molded case circuit breaker (MCCB) with I-Line Plug-In mounting. Part of Schneider Electric's LJ frame series, this high-capacity breaker offers fully adjustable overcurrent protection for industrial switchboards, switchgear, and large-scale power distribution systems.
Key Specifications
- Part Number: LJA36400U33X
- Brand: Square D / Schneider Electric
- Amperage: 400A
- Poles: 3-Pole
- Voltage Rating: 600VAC
- Frame: LJ Frame
- Mounting: I-Line Plug-In
- Trip Type: Solid-State (Electronic Trip)
- Standards: UL Listed, CSA Certified
Features & Benefits
- Solid-state electronic trip unit with adjustable long-time, short-time, and instantaneous protection settings
- 400A continuous rating for high-capacity main and feeder circuit protection
- I-Line Plug-In mounting for safe, efficient installation in Square D I-Line switchboards
- LJ frame engineered for reliability in high-ampacity industrial distribution environments
- Adjustable trip settings reduce nuisance trips and optimize system coordination
Common Applications
The LJA36400U33X is deployed as a main or feeder breaker in industrial manufacturing plants, commercial high-rises, data centers, and utility distribution systems requiring 400A, 600V three-phase protection with adjustable solid-state trip functionality.