Eaton EHD3070 - 70 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Eaton EHD3070 is a 70 A, 480 V, three-pole bolt-on molded case circuit breaker designed to deliver dependable branch-circuit protection in panelboards and load centers. Built to withstand the rigors of commercial and light industrial environments, this breaker combines rugged mounting with precise protection performance.

Key features that matter in the field

• Bolt-on mounting provides a secure, vibration-resistant bus connection—ideal for spaces with equipment and mechanical vibrations where looser fittings can lead to unreliable contacts over time.
• Thermal-magnetic trip unit delivers stable, repeatable protection by responding to both overload currents (thermal element) and short-circuit events (magnetic element) for fast interruption when it counts.
• Three-pole, 480 V rating makes it suitable for 3-phase power distribution in commercial and light industrial applications, helping protect larger circuits and equipment on common 480 V systems.
• OEM loadcenter compatibility designed to align with matching Eaton panelboards and loadcenters, ensuring consistent electrical coordination and a clean, professional fit.

What makes this breaker uniquely valuable

Unlike generic breakers, the EHD3070 is purpose-built for Eaton panel ecosystems and bolt-on installations where vibration, long-term contact integrity, and reliable trip performance are non-negotiable. The molded case construction adds durable insulation and protection against environmental factors found in busy commercial spaces, while the bolt-on design minimizes field retightening and rework—saving time during installation or upgrades.

Ideal applications and use cases

• New or retrofit installations in commercial buildings with 3-phase 480 V distribution networks, where reliable 70 A protection is needed for key feeders.
• Panelboard and loadcenter upgrades in offices, retail centers, data closets, and light industrial facilities, where securing a robust bus connection matters for long-term performance.
• Replacement or expansion scenarios that require a bolt-on solution compatible with OEM Eaton hardware to maintain electrical coordination and service continuity.

Technical snapshot

• Amperage rating: 70 A
• Voltage rating: 480 V
• Poles: 3
• Mounting style: Bolt-on
• Type: Thermal-magnetic molded case circuit breaker

Practical installation and maintenance notes

Ensure the panelboard or loadcenter is designed to accept bolt-on molded case breakers of this type. The bolt-on mounting provides a solid mechanical connection, which translates into consistent electrical contact even in environments with vibration or movement. Because the trip unit is thermal-magnetic, expect predictable response to overload conditions and rapid interruption for short circuits without nuisance tripping.

Why choose Eaton for your 3-phase protection needs

Choosing the Eaton EHD3070 means aligning with a long-standing standard in electrical distribution hardware. Its combination of rugged mounting, stable trip behavior, and OEM compatibility translates to fewer compatibility concerns during installation and smoother ongoing operation in busy commercial or light industrial settings. If you’re equipping or upgrading a 480 V three-phase system, this breaker offers dependable protection for branch circuits and critical equipment without compromising panel integrity.