Eaton GD3020D - 20 A, 480 V, 3-Pole Circuit Breaker | AmpState

The Eaton GD3020D is a 20 A, 480 V, 3-pole molded case circuit breaker engineered to safeguard your electrical distribution with precision and reliability.Designed for dependable branch-circuit overcurrent and short-circuit protection, this unit is a solid choice for panelboards and loadcenters across residential, commercial, and light industrial settings.

Key advantages that matter in real-world panels

• Compact molded-case design minimizes panel depth and wall space, enabling denser panel configurations without compromising protection or access for maintenance.
• Thermal-magnetic trip unit delivers stable overload protection combined with an instantaneous magnetic trip for short circuits, ensuring repeatable performance across a wide range of temperatures and loads.
• Three-pole configuration ensures synchronized disconnection of all live conductors in three-phase systems, enhancing safety for motors, pumps, and other three-phase equipment.
• OEM compatibility designed to pair with matching Eaton OEM loadcenters and panelboards for streamlined installation, simpler stocking, and consistent electrical performance.

Technical snapshot

• Manufacturer: Eaton
• Part Number: GD3020D
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20 A
• Voltage Rating: 480 V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Who this is for

Ideal for any electrical installation that relies on three-phase power and needs robust protection without sacrificing panel space. It’s well-suited for:

• Residential, commercial, and light industrial panelboards and loadcenters
• Motor control feeders and equipment in small to mid-size facilities
• Renovations or retrofits where space is at a premium and OEM compatibility matters

Why it matters in practice

With the GD3020D, you gain a reliable safeguard against damaging overcurrents and short circuits across all three phases. The combination of a compact form factor and a thermal-magnetic trip ensures quick, predictable responses to fault conditions while maintaining ease of installation and servicing. This translates to fewer nuisance trips, easier panel layout planning, and smoother maintenance cycles.

Usage tips and considerations

• Pair with matching Eaton loadcenters and panelboards to ensure optimal fit, labeling, and coordinated trip characteristics.
• When sizing feeders and downstream devices, consider the 20 A rating to prevent nuisance tripping on normal startup surges for equipment like pumps or fans.
• Regularly inspect connections at the breaker terminals and verify that circuit wiring conforms to local codes and the panel’s specifications.