Moeller FAZ-G4A-3 - 4A, 380VAC, 3-Pole, Circuit Breaker

Introducing the Moeller FAZ-G4A-3 — a purpose-built 3-pole circuit breaker designed for dependable overcurrent protection in industrial electrical systems. With a current rating of 4A and a voltage rating up to 380VAC, this unit provides precise, coordinated protection across all three phases, making it a smart choice for three-phase power networks in panelboards, switchboards, and control panels.

Key specifications at a glance

• Current rating: 4A
• Voltage rating: 380VAC
• Poles: 3-Pole
• Breaker type: Circuit Breaker

Why a 3-pole design matters

In three-phase systems, synchronized protection across all phases is critical to prevent phase-to-phase faults and motor damage. The FAZ-G4A-3’s three-pole configuration ensures each phase is protected simultaneously, reducing the risk of uneven loading and unprotected conductors. This is especially important in motor control centers and equipment that rely on balanced, reliable shutdowns during fault conditions.

Ideal applications

• Panelboards, switchboards, and control panels in industrial environments
• Motor control centers and machine automation panels
• OEM electrical assemblies requiring compact, reliable three-phase protection
• Commercial applications where precise overcurrent protection for three-phase circuits is needed

What problems this device solves

The FAZ-G4A-3 delivers dependable overcurrent protection for three-phase circuits, helping to:

• Prevent damage from short circuits and overloads in three-phase equipment
• Minimize downtime by providing fast, predictable fault isolation
• Consolidate protection into a single, space-efficient device suitable for dense control panels

How it compares to alternatives

Compared with single- or two-pole protection options, this 3-pole Moeller breaker offers true three-phase coordination, ensuring all phases trip together when a fault is detected. Its 4A rating makes it well-suited for control circuits and light-load three-phase applications where smaller conductors and compact panel layouts are beneficial. The FAZ-G4A-3 thus delivers targeted protection without unnecessary bulk, helping you optimize panel space and simplify wiring strategies in complex automation setups.

Installation and practical tips

• Verify that your system operates within the 380VAC rating and that the load requires a 4A trip setting to ensure proper protection without nuisance tripping.
• Mount the unit in a compatible enclosure or panelboard where three-phase conductors are readily accessible for clean wiring and secure terminations.
• When wiring, maintain proper phase order and ensure tight, torque-accurate connections to prevent thermal issues and intermittent trips.
• Pair with complementary protection devices in the same distribution scheme to achieve cohesive fault management across your panel or MCC.
• Schedule periodic inspections to confirm the breaker remains within its rated parameters and that no signs of wear, corrosion, or overheating are present.

In critical industrial, commercial, and OEM environments, the Moeller FAZ-G4A-3 stands out as a compact, reliable solution for safeguarding three-phase power. By delivering precise current protection at 380VAC across all three phases, it helps you maintain safe operation, protect valuable equipment, and keep your control systems running smoothly.