EJB34025 - 25 Amp Circuit Breaker

EJB34025 - 25 Amp Circuit Breaker

When dependable circuit protection is a priority, the Square D EJB34025 delivers the performance professionals expect. This 25 Amp, 3-pole E-Frame circuit breaker is built for use in compatible Square D NF panelboards, helping protect electrical systems from overloads and short circuits in commercial and industrial applications. Its thermal-magnetic trip unit reacts to both sustained overcurrent conditions and sudden fault events, helping minimize equipment damage and reduce unplanned downtime.

The bolt-on design provides a secure installation, making the EJB34025 a practical choice whether you're replacing an existing breaker or completing a new panelboard installation. A built-in trip indicator makes it easy to identify when the breaker has tripped, saving valuable troubleshooting time during maintenance.

Key Features and Benefits

• 25 Amp current rating
• Three-pole design for three-phase applications
• Bolt-on mounting for compatible Square D NF panelboards
• Thermal-magnetic trip unit protects against overloads and short circuits
• Built-in trip indicator helps simplify troubleshooting
• Rated for systems up to 480Y/277V AC
• Interrupting ratings up to 100 kA, depending on system voltage
• HACR rated for qualifying HVAC applications
• HID rated for high-intensity discharge lighting circuits
• Accepts both copper and aluminum conductors
• Factory calibrated for operation at 40°C (104°F)

Technical Specifications

• Manufacturer: Square D
  
• Catalog Number: EJB34025
  
• Series: 125A Frame EDB / EGB / EJB
  
• Frame Type: E-Frame
  
• Product Type: Thermal-Magnetic Circuit Breaker
  
• Current Rating: 25 Amps
  
• Number of Poles: 3
  
• Maximum Operating Voltage: 480Y/277V AC
  
• Mounting Style: Bolt-On
  
• Panel Compatibility: Square D NF Panelboards
  
• Trip Unit Technology: Thermal-Magnetic
  
• Protection: Overload and Short Circuit
  
• Trip Indicator: Yes
  
• Trip Unit Rating: 875 Amps
  
• Holding Current: 270 Amps
  
• Interrupting Ratings:
  • 100 kA @ 120V AC
  • 100 kA @ 120/240V AC
  • 100 kA @ 240V AC
  • 65 kA @ 277V AC
  • 65 kA @ 480Y/277V AC
• Wire Size:
  • Copper: AWG 14–6
  • Aluminum: AWG 12–6
• Terminal Type: Aluminum Lugs
  
• Tightening Torque: 30.09 lb-in (3.4 N·m)
  
• Number of Spaces Required: 3
  
• Calibration Temperature: 40°C (104°F)
  
• Dimensions:
  • Height: 5.66 in H
  • Width: 2.94 in W
  • Depth: 4.05 in D
• Weight: Approximately 4 lb
  

Material Compliance and Certifications

The Square D EJB34025 is cULus Listed, HACR rated, HID rated, and TAA compliant. It is calibrated for operation at an ambient temperature of 40°C (104°F) and is intended for installation in compatible Square D NF panelboards. Installation should always follow the National Electrical Code (NEC), local electrical codes, and manufacturer recommendations.

Where It Works Best

The EJB34025 is a good fit for a wide range of commercial and industrial electrical systems, including:

• Square D NF panelboards
• Commercial buildings
• Manufacturing facilities
• Warehouses
• Schools and universities
• Healthcare facilities
• Office buildings
• Retail spaces
• HVAC equipment requiring HACR-rated protection
• HID lighting systems
• Three-phase branch circuits
• Electrical maintenance and replacement projects