Square D EDB34070SA - 70 A, 3-Pole Bolt-On Circuit Breaker | AmpState

The Square D EDB34070SA is a 70 A, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit protection for panelboards and loadcenters. Built for rugged environments, this breaker provides stable protection against overloads and short circuits, helping keep electrical systems safe and operational.

Why this breaker stands out

• Secure bolt-on mounting delivers a rigid, vibration-resistant connection to the bus, reducing movement that can impact protection performance over time.
• Thermal-magnetic trip unit combines reliable thermal overload sensing with instantaneous magnetic protection for quick, repeatable response to faults.
• OEM-compatible design is specifically made to work with matching Square D load centers and panelboards for a seamless fit and dependable operation.
• 3-pole configuration supports 3‑phase circuits and is suitable for a range of panelboard layouts found in residential, commercial, and light industrial settings.

What problems it solves

In the event of overcurrent or a short circuit, the EDB34070SA interrupts the circuit promptly, protecting conductors and connected equipment from damage. The 70 A rating is well-suited for protecting larger branch circuits such as motor loads, HVAC controls, and other high-demand applications within panelboards and loadcenters, helping minimize downtime and costly repairs.

Technical snapshot

• Manufacturer: Square D
• Part number: EDB34070SA
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 70 A
• Number of poles: 3
• Mounting style: Bolt-on
• Applications: Branch circuit overcurrent and short-circuit protection in panelboards and loadcenters

Ideal use cases

Choose the Square D EDB34070SA when upgrading a panel or replacing an aging breaker in commercial or light industrial environments, or when configuring a new installation that requires robust 3‑pole protection for 3‑phase circuits. It’s also a solid choice for mains feeders and large branch circuits in residential-adjacent settings where reliability matters.

Bottom line

With its secure bolt-on mounting, thermal-magnetic protection, and OEM-ready compatibility, the Square D EDB34070SA 70 A, 3-pole bolt-on circuit breaker offers dependable, long-lasting protection for your panelboards and loadcenters. It’s engineered to handle real-world electrical demands while maintaining safety and performance across diverse environments.