Square D EDB34070 - 70 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Square D EDB34070—a 70A, 480V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built to withstand vibration and maintain a solid bus connection, this breaker helps keep critical electrical systems running smoothly in demanding environments.

Why this breaker stands out

• Secure bolt-on mounting: Provides a rigid, vibration-resistant bus connection that stays reliable through service life, reducing the risk of loose connections in active panels.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection by combining thermal sensing with magnetic response to short circuits, helping to minimize nuisance trips.
• OEM compatibility: Designed to match Square D OEM load centers and panelboards for straightforward, drop-in replacements or new installations.
• Three-pole, 480V protection: Perfect for 3-phase systems in commercial and light industrial settings, with a 70A rating for medium-duty branch circuits.
• Versatile application: Suitable for residential-style installations that demand reliable protection in panelboards and load centers.

Technical snapshot

• Manufacturer: Square D
• Part number: EDB34070
• Type: Thermal-magnetic molded case circuit breaker
• Ampere rating: 70A
• Voltage rating: 480V
• Poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

• Replacing failing or obsolete breakers in 480V panelboards and load centers for continuous service
• Upgrading protection in commercial electrical rooms that rely on reliable 3-phase distribution
• Protecting 3-phase equipment and motors in light industrial environments
• New installations where OEM compatibility with Square D panelboards ensures quick, hassle-free integration

What to expect in practice

The EDB34070 delivers precise, dependable overcurrent and short-circuit protection for 3-phase systems at 480V. Its bolt-on design reduces installation time while preserving a strong, vibration-resistant connection in panelboards and load centers. The integrated thermal-magnetic trip unit provides predictable response across varying temperatures and load conditions, helping you avoid unexpected outages and extended downtime.

Designed to work with matching Square D OEM panels, this 70A, 480V, 3-pole breaker is an informed choice for electricians and facility managers seeking durable protection with straightforward compatibility. For projects that demand reliable performance in commercial or light industrial settings, the Square D EDB34070 offers a precise fit, robust protection, and long-term value.