EJB34080 - 80 Amp Circuit Breaker

EJB34080 - 80 Amp Circuit Breaker

Square D's EJB34080 — an 80 Amp breaker designed to deliver dependable, long-lasting protection for low-voltage lighting and electrical circuits in the NF Panelboard. Whether you’re managing commercial lighting loads or industrial distribution panels, this breaker offers the peace of mind you need when it counts. With precise thermal‑magnetic protection, easy bolt‑on installation, and a design built to stand the test of time, it handles heavy-duty demands without fuss.

Key Features and Benefits

• Thermal‑magnetic trip unit — Offers accurate overload and short-circuit protection to safeguard critical circuits, helping prevent downtime from electrical faults.
• Bolt-on mounting system — Enables quick, secure installation directly into compatible panelboards, eliminating loose connections and simplifying setup for contractors.
• Built for long-term reliability — With a projected service life of up to two decades, the EJB34080 reduces maintenance needs and long-term operational costs.
• High fault-current interruption capability — Rated to handle 100 kA at 120 VAC and 65 kA at 480Y/277 VAC, providing confidence in demanding environments and fluctuating load conditions.

Technical Specifications

• Ampere Rating (In): 80 Amp
  
• Maximum Operating Voltage: 480Y/277 VAC
  
• Breaking Capacity:
  • 100 kA @ 120 VAC
  • 65 kA @ 480V
• Trip Unit Rating (Iₙ): 2,300 A
  
• Holding Current (Iₕ): 1,000 A
  
• Electrical Connection: Aluminum lugs
  
• Physical Dimensions:
  • Height: 5.66″ (143 mm)
  • Width: 2.94″ (75 mm)
  • Depth: 4.05″ (103 mm)
• Weight: Approx. 4 lb (1.81 kg)
  

Material Compliance and Certifications

• cULus Listed — Complies with North American safety standards, giving you assurance for commercial and industrial installations.
• Green Premium® certified & Mercury-free construction — Reflects a commitment to eco-friendly and safer materials that ease disposal and environmental impact concerns.
• Compliant with RoHS and REACh directives — Meets strict regulations on hazardous substances, making it suitable for installations in regulated markets worldwide.

Where It Works Best

• This breaker is ideal for industrial or commercial panelboard applications — especially lighting or distribution systems where consistent performance and safety are crucial. It excels in facilities that deal with fluctuating loads or high fault-current potential, maintaining steady performance under stress. Maintenance teams and contractors will appreciate its straightforward bolt-on installation, while building owners and facility managers will benefit from reduced maintenance and long-term reliability. It’s particularly suited for lighting panelboards built on the NF series configuration, but versatile enough for a broad range of low-voltage distribution uses.