LGA36400U31XYP - 400 Amp Circuit Breaker

LGA36400U31XYP  - 400 Amp Circuit Breaker

When reliability counts and safety can’t be compromised, the LGA36400U31XYP from Schneider Electric’s PowerPact L line delivers the protection you need. Rated for 400 amps, 3 poles, this I‑Line breaker offers strong fault‑interruption capacity, built‑in trip technology, and flexible mounting options. Whether it’s in a commercial switchboard, industrial panel, or critical backup system, this breaker guards your circuits against overloads and short circuits with precision. Its padlockable handle and MicroLogic 3.3 electronic trip unit make it a solid choice for safety compliance and operational control.

Key Features and Benefits

• 400A, 3‑Pole Configuration: Handles high current loads across three phases—ideal for industrial / commercial power panels.
• PowerPact L Frame with I‑Line Mounting: Compact footprint, easy mounting in cabinets or conductor bus systems; compatible with common accessories.
• MicroLogic 3.3 Electronic Trip Unit (LI): Offers precise trip settings, better protection against overcurrent, and easier diagnostics.
• Current Limiting: Limits the let‑through energy during fault conditions, reducing stress on downstream equipment.
• Padlockable Handle: Adds safety by allowing the breaker to be mechanically locked off to prevent unauthorized operation.
• High Interrupting Ratings: Ensures the breaker can safely interrupt high fault currents at different voltages.

Technical Specifications

• Rated Current (In): 400 A Province Electric+2Breaker Outlet+2
• Number of Poles: 3‑pole Province Electric+2Breaker Outlet+2
• Voltage Ratings: 600 V AC rated for 50/60 Hz USESI+2Province Electric+2
• Interrupting / Breaking Capacity (AIC / kAIC):
  • 65 kA @ 240 VAC
  • 35 kA @ 480 VAC
  • 18 kA @ 600 VAC Province Electric+2Breaker Outlet+2
• Continuous Current Rating: 80% of nominal current Province Electric+2Schneider Electric+2
• Trip Unit Type: MicroLogic 3.3 LI electronic trip unit (current limiting) Province Electric+1
• Wire / Conductor Size: AWG 3/0 to 500 kcmil, aluminium or copper Province Electric+1
• Mechanical / Physical Size: Approx. 13.4 in H × 5.50 in W × 6.00 in D (≈ 340 × 140 × 150 mm) Province Electric+2RSP Supply+2
• Poles & Mounting: 3‑pole, I‑Line terminal on line side; lugs on load side; padlockable handle OFF/ON locking Province Electric+2Schneider Electric+2

Material Compliance and Certifications

• Certifications: UL 489 Listed, CSA, NEMA, IEC 60947‑2/‑3, NMX, VDE, CCC, CE marked. Schneider Electric+2Province Electric+2
• Environmental Compliance: RoHS compliant (with listed exemptions) and meets REACh requirements. Province Electric+1
• IP Rating: IP40 protection on front cover; suitable for environments inside enclosures or switchboards. Province Electric+1
• Environmental Operation Limits: Able to operate at altitudes up to 2000 m without derating and up to 5000 m with derating; ambient temperature operation approximately ‑2 °C to +70 °C (≈ 28‒158 °F) Province Electric

Suitability

• Industrial power distribution systems, especially three‑phase services in factories, process plants, or large commercial buildings.
• Switchgear or panelboards using I‑Line mounting style—this breaker integrates well in retrofit or new installations using Square D PowerPact L gear.
• Applications where high fault currents are possible, such as service mains, feeders, or motors—thanks to its high interrupting ratings.
• Situations requiring precision protective control, like variable loads or delicate downstream equipment that need protection without nuisance trips (thanks to the MicroLogic 3.3 unit).
• Environments where lockout/tagout / safety procedures are essential, because of its padlockable handle.