Eaton GJ1P-Z4-4 - 400A, 2-Pole, Circuit Breaker

Eaton GJ1P-Z4-4: 400A, 2-Pole Circuit Breaker for Industrial Protection

The Eaton GJ1P-Z4-4 is a high-capacity circuit breaker built to safeguard demanding electrical systems. With a 400A current rating and a 2-pole design, this device delivers firm, reliable overcurrent protection while enabling safe, coordinated control in critical installations.

Where it fits

Ideal for panelboards, switchboards, and control panels across industrial, commercial, and OEM environments. Use it in distribution panels and motor control centers where dependable protection and safe operation are essential.

Key features and benefits

• High-current protection: 400A rating handles large feeders and substantial load profiles with confidence.
• Two-pole configuration: Simultaneous protection and isolation of both conductors, beneficial for multi-wire circuits and motor-driven equipment.
• Flexible applicability: Designed for a range of Eaton distribution solutions, including panelboards, switchboards, and control panels.
• Industrial reliability: Built to support continuous operation in demanding environments, helping minimize downtime and maintenance needs.

Use cases

Employ the GJ1P-Z4-4 as main protection in distribution panels, feeders to heavy machinery, or within motor control centers. It’s a solid upgrade choice for installations requiring robust, predictable interruption of fault current while maintaining safe operation of connected loads.

Why this model stands out

Unlike lower-current or single-pole alternatives, the 400A, 2-pole configuration provides comprehensive protection for high-demand circuits and multi-wire systems. This translates to improved safety, easier coordination with upstream protection, and greater resilience in everyday operations.

Specifications at a glance

• Current rating: 400A
• Poles: 2-Pole
• Breaker type: Circuit Breaker
• Recommended applications: panelboards, switchboards, control panels, distribution panels, motor control centers