Wacker Neuson 5000173759 Breaker 350 Amp, 3 Pole

The Wacker Neuson Breaker 350 Amp, 3 Pole is a genuine OEM circuit breaker designed for the G120 series portable generator line. As a direct OEM replacement, this breaker is built to the exact electrical specifications required by the G120 platform — ensuring the correct trip rating, pole configuration, and terminal interface every time. The is confirmed compatible across a wide range of G120 generator variants, including standard, cold weather, skid-mounted, Tier 3, Tier 4i, and 600V switchable configurations. Sourcing the correct OEM breaker for your G120 is critical — an undersized or mismatched breaker can cause nuisance trips, output instability, or leave the generator's electrical system unprotected.

Key Features

• 350 Amp, 3 Pole Trip Rating: — Matched precisely to the G120's electrical output demands; the correct amperage and pole count are non-negotiable for safe, stable generator operation.
• Genuine OEM Component: — Sourced directly through Wacker Neuson's authorized parts supply chain, ensuring the correct breaker frame size, terminal layout, and interrupt capacity for the G120 system.
• Broad G120 Series Coverage: — Fits standard, cold weather, skid-mounted, custom, Tier 3, Tier 4i, and 600V switchable G120 generator variants — both mobile and stationary configurations.
• Drop-In Terminal Fit: — Designed to mount and wire directly into the G120's electrical panel without modification to the breaker compartment or bus connections.
• Electrical System Protection: — A functioning 3-pole breaker at the correct rating protects the generator's output circuits from overcurrent events; a failed or incorrect breaker compromises that protection and risks equipment damage or electrical hazard.
• Safety-Critical Electrical Part: — Circuit breakers are a primary safety device in any generator system. Using the OEM-specified breaker ensures the overcurrent protection operates within the design parameters of the G120's electrical architecture.

A 3-pole circuit breaker serves as the main overcurrent protection device in a generator's electrical output system. It monitors current flow across all three phases simultaneously and trips the circuit if current exceeds the rated threshold — protecting downstream equipment and the generator's internal wiring from damage. In a 120 kVA-class machine like the G120, a 350-amp breaker at this pole count is sized to handle the full rated output load under continuous and surge conditions. When a breaker wears out, develops a weak trip mechanism, or is replaced with an incorrectly rated unit, the generator may either trip prematurely under normal load or — more dangerously — fail to trip during a true overcurrent event.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

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