Wacker Neuson 5000193238 Breaker (Main) 1000 Amp, 3 Pole

The Wacker Neuson is a genuine OEM Breaker (Main) 1000 Amp, 3 Pole designed for the G320 portable generator series. Sourced directly from Wacker Neuson, this part carries the exact electrical rating, pole configuration, and physical form factor specified for G320 generators across Standard, Cold Weather, Custom, and Mobile configurations — including Tier 4 Interim and Tier 4 Final variants. Installing the correct main breaker ensures the generator's overcurrent protection circuit operates exactly as engineered, safeguarding both the machine and the load it powers. This is the part to reach for when the original breaker has tripped beyond reset, shows signs of heat damage, or must be replaced as part of a planned electrical service.

Key Features

• Correct Amperage and Pole Rating — Rated at 1000 amps across 3 poles, matching the G320's electrical architecture exactly so overcurrent protection performs to spec.
• Genuine OEM Part — Manufactured to Wacker Neuson's original design tolerances, ensuring the breaker's trip curve and thermal-magnetic response align with the G320's load protection requirements.
• Broad G320 Series Coverage — Fits Standard, Cold Weather, Custom, and Mobile G320 generator configurations, including Tier 4 Interim, Tier 4 Final, and Transport Canada-certified units.
• Direct Panel Replacement — Engineered to mount and wire into the existing breaker panel position without modification to bus connections or enclosure hardware.
• Critical Electrical Protection — A correctly rated main breaker prevents catastrophic overload damage to the generator's alternator and wiring; an undersized, worn, or incorrect breaker puts the entire machine and connected equipment at risk.

The main breaker is the primary overcurrent protection device on a large portable generator. It monitors total current draw across all three phases and automatically interrupts power if load current exceeds its rated threshold — protecting the alternator windings, internal wiring, and downstream distribution equipment from overload or short-circuit damage. On the G320, this is a high-capacity 3-pole unit that handles the full output of the machine, making it a safety-critical component; a breaker that fails to trip on overload or that nuisance-trips under normal load will take the generator out of productive service and can cause serious electrical damage.

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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