LJA36250U33X - 250 Amp Circuit Breaker

LJA36250U33X - 250 Amp Circuit Breaker

When your electrical system must perform without compromise, the PowerPacT L LJA36250U33X stands ready. This 3-pole, 250 amp circuit breaker from Schneider Electric combines precision protection with industrial-grade endurance. Operating at up to 600 VAC, it handles fault currents with a 25 kA interrupting rating, thanks to the advanced MicroLogic 3.3S electronic trip unit. Whether you’re retrofitting an existing panel or designing a new distribution setup, this breaker delivers dependable safety and performance under demanding conditions.

Key Features and Benefits

• High fault tolerance: With a 25 kA interrupting rating at 600 VAC (and even higher capacities at lower voltages), it can handle major fault events without failing.
• Smart protection: The integrated MicroLogic 3.3S trip unit offers L, S, and I (LSI) functionality—giving you adjustable protection against overloads, short circuits, and instantaneous faults.
• Flexible mounting: Engineered for I-Line mounting on the line side with mechanical lugs for the load side, it’s easy to fit into standard control panels.
• Sustainably built: Labeled Green Premium by Schneider, this unit meets strict environmental standards like RoHS and REACh.
• Certified performance: Meets UL 489, CSA, NEMA, IEC 60947-2, and is CE marked—ensuring global compliance and reliability.

Technical Specifications

• Current Rating: 250 A
• Number of Poles: 3 (three-pole)
• Rated Voltage: 600 VAC
• Interrupting Ratings:
  • 25 kA at 600 VAC
  • 65 kA at 480 VAC
  • 100 kA at 240 VAC
• Trip Unit Technology: MicroLogic 3.3S (LSI)
• Continuous Rating: 80% of nominal
• Mounting Mode: I-Line bracket
• Connections: I-Line (line side) and mechanical lugs (load side)
• Operating Temperature: –25 °C to +70 °C (–13 °F to +158 °F)
• Dimensions (H × W × D):
  • 13.39 in × 5.51 in × 4.33 in (340 mm × 140 mm × 110 mm)
• Weight: 13.67 lb (6.2 kg)

Material Compliance and Certifications

• RoHS & REACh compliant: Manufactured without restricted hazardous substances, aligned with major global chemical regulations.
• Certifications: Fully certified under UL 489, CSA, NEMA, IEC 60947-2, and carries the CE mark—ensuring broad global acceptance.
• IP40 front protection: Guards against dust and solid intrusion from the front face, making it suitable for industrial settings.
• Sustainable credentials: Part of Schneider’s “Use Better / Use Longer / Use Again” initiative, designed with recyclability and lifecycle impact in mind.

Where It Works Best

• This breaker is ideal in industrial and commercial power systems where safety, reliability, and uptime are essential. Use it as a main panel disconnect in control enclosures, or as protection in power distribution centers and motor control centers. Because of its high interrupting capacity and precise trip functions, it performs exceptionally well in applications with significant fault-current potential—such as manufacturing plants, data centers, large HVAC systems, or any facility requiring dependable backup protections. Whether you’re upgrading legacy systems or designing from scratch, the LJA36250U33X brings you peace of mind with strong protection and innovative design.