EJB14030 - 30 Amp Circuit Breaker

EJB14030 - 30 Amp Circuit Breaker

The Square D EJB14030 is a dependable 30 Amp, 1-pole E-Frame miniature circuit breaker designed to provide reliable protection for commercial and industrial electrical systems. Engineered for use in compatible Square D NF panelboards, this bolt-on breaker safeguards branch circuits against damaging overloads and short circuits with its proven thermal-magnetic trip unit. Whether you're replacing an existing breaker or performing preventative maintenance, the EJB14030 delivers the performance and consistency professionals expect. A built-in trip indicator provides quick visual confirmation when the breaker has tripped, speeding troubleshooting and minimizing equipment downtime.

Key Features and Benefits

• 30 Amp, single-pole miniature circuit breaker for commercial and industrial applications
• Designed for use in compatible Square D NF panelboards
• Thermal-magnetic trip unit delivers dependable overload and short-circuit protection
• Bolt-on mounting provides a secure and reliable installation
• Built-in trip indicator simplifies diagnostics and maintenance
• Rated for systems up to 277 VAC
• HACR, HID, and Switching Duty rated for a broad range of electrical applications
• Accepts copper conductors from 14–6 AWG and aluminum conductors from 12–6 AWG
• Calibrated for dependable performance at ambient temperatures up to 40°C (104°F)

Technical Specifications

• Manufacturer: Square D
  
• Catalog Number: EJB14030
  
• Product Type: Miniature Circuit Breaker
  
• Series: 125A Frame EDB/EGB/EJB (E-Frame)
  
• Device Type: EJB
  
• Amperage: 30 Amps
  
• Poles: 1
  
• Maximum Operating Voltage: 277 VAC
  
• Trip Unit Technology: Thermal-Magnetic
  
• Trip Unit Rating: 875 A
  
• Holding Current: 270 A
  
• Interrupting Rating:
  • 100 kA @ 120 VAC
  • 65 kA @ 120/240 VAC
  • 65 kA @ 240 VAC
  • 65 kA @ 277 VAC
• Breaking Capacity Code: J
  
• Mounting Style: Bolt-On
  
• Compatible Equipment: Square D NF Panelboards
  
• Protection: Overload and Short Circuit
  
• Trip Indicator: Yes
  
• Electrical Connections: Aluminum lugs
  
• Wire Range:
  • Copper: 14–6 AWG
  • Aluminum: 12–6 AWG
• Terminal Tightening Torque: 30.09 lb-in (3.4 N·m)
  
• Dimensions:
  • Height: 5.66 in.
  • Width: 0.98 in.
  • Depth: 4.05 in.
• Weight: 2 lb.
  

Material Compliance and Certifications

• cULus Listed
• TAA Compliant
• HACR Rated
• HID Rated
• Switching Duty Rated
• Calibrated for operation at 40°C (104°F)
• Country of Origin: Mexico
• Manufacturer's 18-Month Warranty

Where It Works Best

The Square D EJB14030 is ideal for protecting commercial, industrial, and institutional electrical distribution systems that utilize compatible Square D NF panelboards. It is commonly used in lighting panelboards, branch circuits, HVAC equipment, and high-intensity discharge (HID) lighting installations, where dependable circuit protection and high interrupting capacity are essential.