EJB34125 - 125 Amp Circuit Breaker

EJB34125 - 125 Amp Circuit Breaker

Looking for a dependable 125 Amp circuit breaker that delivers solid, long‑lasting protection for your electrical system? The Schneider Electric EJB34125 miniature circuit breaker is engineered for just that — combining convenient installation with high-performance safety features to safeguard your circuits, HVAC systems, lighting loads, and power distribution panels. With its 3-pole design and E‑frame configuration rated at 480Y/277 VAC, this breaker offers a high interrupt capacity (up to 100 kA), thermal-magnetic trip protection, and compatibility with NF panelboards — making it a top choice for both commercial and industrial electrical setups.

Key Features and Benefits

• High Interrupt Rating: Capable of interrupting up to 100 kA at 120 VAC, the EJB34125 handles large fault currents, ensuring your circuits remain protected under heavy load or fault conditions.
• Thermal‑Magnetic Trip Unit: Provides dependable overload and short‑circuit protection, helping to prevent damage to wiring and connected equipment and extending the life of your installation.
• HACR Rated: Suitable for heating, air conditioning, and refrigeration applications, giving you flexibility to use the breaker across different system types.
• Durable Under Heat: Calibrated to perform in temperatures up to 40 °C (104 °F), this breaker stays dependable in warm or demanding environments.
• Bolt‑On Mounting: Designed for simple and secure bolt-on installation, making it easy for electricians to mount and wire without hassle.
• Designed for NF Panelboards: Crafted to fit seamlessly with NF-style panelboards for efficient integration in existing electrical setups.

Technical Specifications

• Product Type: Miniature circuit breaker (E‑Frame, 3‑Pole)
• Frame/Current Rating: 125 Amp E‑Frame (EDB/EGB/EJB series)
• Trip Unit: Thermal‑magnetic, 2300 A rating
• Operational Voltage: 480Y/277 VAC (also rated at 120/240 V AC)
• Breaking Capacity:
  • Up to 100 kA at 120 V/240 V AC
  • 65 kA at 277 V AC
  • 65 kA at 480Y/277 V AC
• Wire Compatibility: AWG 14 to AWG 2/0 copper; AWG 12 to AWG 2/0 aluminum
• Poles: 3‑Pole configuration
• Mounting: Bolt‑on style for NF panelboards
• Trip Unit Gear: Thermal‑magnetic with reliable overload and short‑circuit protection
• Wire-Terminal Tightening Torque: 34.5 lbf·in (AWG 14–AWG 10) / 49.6 lbf·in (AWG 8–AWG 2/0)
• Dimensions:
  • Height: 5.66 in
  • Width: 2.94 in
  • Depth: 4.05 in
• Weight: Approx. 4 lb (1.81 kg)

Material Compliance and Certifications

• Certifications: This circuit breaker is cULus certified, ensuring conformance with recognized safety and quality standards.
• Green Premium: Bears the “Green Premium” label to show its adherence to environmental performance and transparency requirements.
• Environmental Compliance: Meets RoHS and REACh directives — meaning it’s free from hazardous substances and compliant with current safety and environmental regulations.
• Temperature Rating: Rated for reliable operation in ambient temperatures up to 104 °F (40 °C)

Where It Works Best

• The Schneider Electric EJB34125 excels in commercial and industrial settings where dependable circuit protection is essential. It’s an excellent pick for lighting panelboards, HVAC systems, refrigeration circuits, or any power‑distribution application requiring a high-capacity, 3‑pole breaker. If you’re outfitting a new installation or upgrading an existing electrical panel — especially an NF-style panelboard — this breaker offers the performance, safety, and compatibility you need to keep your system running smoothly and safely.