Square D EJB34070 - 70 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Square D EJB34070 — a robust 70 A, 480 V, 3-pole bolt-on molded case circuit breaker designed to safeguard branch circuits in panelboards and load centers. Built for demanding environments, it delivers reliable protection where it matters most.

• Secure bolt-on mounting: a rigid, vibration-resistant bus connection that stays put in crowded panels and active electrical rooms, reducing movement and wear over time.
• Thermal-magnetic trip unit: combines precise overload protection with instant short-circuit interruption, producing stable, repeatable protection performance across varying temperatures and loads.
• OEM-compatible design: engineered to pair with matching Square D OEM load centers and panelboards for a seamless, plug‑and‑play fit and dependable operation.
• Versatile, purpose-built protection: ideal for residential, commercial, and light industrial applications where 480 V three-phase distribution is present.

The EJB34070 protects against overcurrent and short circuits on branch circuits, helping prevent equipment damage, downtime, and fire hazards. Its molded‑case construction and thermal‑magnetic trip mechanism are designed for long service life in control panels, service panels, and distribution centers.

Why this breaker stands out

• Designed for rigid, vibration‑prone environments where a secure mechanical connection matters as much as electrical performance.
• Reliable trip characteristics reduce nuisance trips while ensuring rapid response to dangerous faults.
• Compatibility across Square D panelboards streamlines replacements and upgrades, minimizing wiring changes and planning time.

Technical specifications

• Manufacturer: Square D
• Part Number: EJB34070
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 70 A
• Voltage Rating: 480 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Whether you're upgrading a commercial panel, supplying a 3‑phase load in a light industrial setting, or expanding a residential system that requires 480 V equipment, the Square D EJB34070 provides dependable, code‑compliant protection with straightforward installation. Choose this breaker for a trusted, long‑term solution that aligns with your Square D panelboard ecosystem.