EJB14020 - 20 Amp Circuit Breaker

EJB14020 - 20 Amp Circuit Breaker

When you need dependable circuit protection for a compatible Square D NF panelboard, the Square D EJB14020 delivers the performance professionals rely on. This 20 Amp, single-pole E-Frame circuit breaker is built to protect electrical systems against both overloads and short circuits using a proven thermal-magnetic trip unit. Whether you're replacing an existing breaker or maintaining a commercial electrical system, the EJB14020 offers the reliability and durability needed to keep equipment operating safely and efficiently. Designed for 277 VAC applications, the EJB14020 features an impressive 100 kA interrupting rating at 120 VAC and 65 kA interrupting ratings at 120/240 VAC, 240 VAC, and 277 VAC, making it a great choice for demanding electrical environments.

Key Features and Benefits

• Provides reliable overload and short-circuit protection with a thermal-magnetic trip unit
• 20 Amp current rating with a single-pole configuration
• Designed for use in compatible Square D NF panelboards
• Bolt-on mounting helps ensure a secure, stable installation
• Built-in trip indicator makes breaker status easy to identify
• Rated for systems up to 277 VAC
• Switching Duty, HACR, and HID rated for greater application flexibility
• Accepts copper conductors from 14–6 AWG and aluminum conductors from 12–6 AWG
• Calibrated for reliable operation in ambient temperatures up to 40°C (104°F)

Technical Specifications

• Manufacturer: Square D
  
• Catalog Number: EJB14020
  
• Product Type: Miniature Circuit Breaker
  
• Series: E-Frame (125A Frame EDB/EGB/EJB)
  
• Amperage: 20 Amps
  
• Poles: 1
  
• Maximum Operating Voltage: 277 VAC
  
• Trip Unit: 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
• Mounting: Bolt-On
  
• Compatible Equipment: NF Panelboards
  
• Protection: Overload and Short Circuit
  
• Trip Indicator: Yes
  
• Wire Range:
  • Copper: 14–6 AWG
  • Aluminum: 12–6 AWG
• Dimensions:
  • Height: 5.66 in.
  • Width: 0.98 in.
  • Depth: 4.05 in.
• Weight: 2 lbs.
  

Material Compliance and Certifications

• cULus Listed
• TAA Compliant
• HACR Rated
• HID Rated
• Switching Duty Rated
• Calibrated for operation at 40°C (104°F)
• Manufacturer's 18-month warranty

Where It Works Best

The Square D EJB14020 is an excellent choice for commercial, industrial, and institutional electrical systems that use compatible NF panelboards. It's commonly used to protect lighting circuits, HVAC equipment, branch circuits, and other 277 VAC applications where dependable circuit protection is critical. Whether you're replacing a worn breaker during routine maintenance or upgrading an existing electrical distribution system, the EJB14020 provides the performance, safety, and compatibility electricians and facility managers expect.