JJA36250U33X - 250 Amp Circuit Breaker

JJA36250U33X - 250 Amp Circuit Breaker

The JJA36250U33X is a top-tier 250 Amp, 3-pole molded-case circuit breaker from Schneider Electric's PowerPacT J frame series—engineered to protect demanding commercial and industrial electrical systems with high efficiency and dependable performance. With a rated operational voltage of up to 600 VAC and an actual breaking capacity of 25 kA (at 600 VAC) and higher at lower voltages, this breaker delivers consistent protection for switchboards, panelboards and critical infrastructure. Its built-in Micrologic 3.2S trip unit with LSI (Long-Time, Short-Time, Instantaneous) functionality ensures rapid response to overloads or short circuits, helping you maintain uptime and safety at every turn.

Key Features and Benefits

• High-capacity fault interruption: At 600 VAC this unit offers 25 kA breaking capacity, with even higher ratings at lower voltages (65 kA at 480 VAC and 100 kA at 240 VAC) — excellent for high-demand electrical systems.
• Advanced trip unit technology: The Micrologic 3.2S electronic trip system offers fully adjustable LSI protection, allowing you to tailor long-time, short-time and instantaneous trip settings for precise safeguarding of your load-side equipment.
• Simplified installation: Designed for I-Line mounting with line-side I-Line terminations and load-side mechanical lugs, this breaker integrates easily into compatible switchboards and panelboards, reducing on-site time.
• Sustainable design: Complies with RoHS and REACh directives, and comes from a manufacturer with a clear lifecycle- and sustainability-focus, supporting your environmentally-responsible sourcing.
• Reliable operation in tough conditions: With an operating ambient range down to –25 °C (–13 °F) up to +70 °C (158 °F) and an IP40-rated front cover, this breaker can meet the demands of industrial environments.

Technical Specifications

• Rated Current: 250 A
  
• Poles: 3-pole
  
• Operational Voltage: 600 VAC (rated Ue)
  
• Breaking Capacity:
  • 25 kA at 600 VAC
  • 65 kA at 480 VAC
  • 100 kA at 240 VAC per UL 489
• Trip Unit: Micrologic 3.2S, electronic trip with LSI functions
  
• Continuous Current Rating: 80% of nominal
  
• Mounting: I-Line bracket (line-side I-Line connection, load-side mechanical lugs)
  
• Dimensions:
  • Height: ~7.52 in
  • Width: ~4.09 in
  • Depth: ~3.39 in
• Weight: Approx. 5.29 lbs (2.4 kg)
  
• Communication Interface: Modbus, Ethernet supported
  

Material Compliance and Certifications

• RoHS and REACh Compliance: RoHS-compliant and REACh-compliant via manufacturer declaration.
• Certifications: Certified to UL 489, CSA, NOM, CE, and IEC 60947-2 standards.
• Front Cover Protection: IP40 — suitable for many industrial control-panel environments.
  

Where It Works Best

• This breaker is ideal for commercial and industrial installations where high reliability and protection matter most: data centers, manufacturing facilities, large scale HVAC systems, switchgear rooms, and mission-critical infrastructure. If your system demands a high-performance control device capable of handling heavy loads and safeguarding downstream equipment, the JJA36250U33X is a strong fit.