Eaton Cutler-Hammer KG3350WA12S43Z04 350A 3-Pole Generator Molded Case Circuit Breaker – Bolt-On – 600VAC with A12 Auxiliary & S43 Shunt Trip

The Eaton Cutler-Hammer KG3350WA12S43Z04 is a K-frame molded case generator circuit breaker engineered for industrial and generator applications. It features a thermal-magnetic interchangeable trip unit with a 500–1000 Amp magnetic trip range for precise overload and short-circuit protection. This model comes equipped with dual configuration options:

• A12 Auxiliary Switch – 2-A (Open) / 2-B (Closed), Right Pole Mounted, Exiting Same Side
• S43 Shunt Trip – 12–24 VAC/VDC, Left Pole Mounted, Exiting Opposite Side
• Rated at 350 Ampere at 40°C, the breaker provides robust protection and flexible integration for generator panels and switchgear systems.

Key Features

• K-Frame Generator Circuit Breaker for high-reliability power protection
• Thermal-Magnetic Interchangeable Trip Unit
• Dual Options Installed:
• • A12 Auxiliary Switch (Right Pole, Same Side)
  • S43 Shunt Trip (Left Pole, Opposite Side)
• Bolt-On Connection for easy installation
• Line and Load Terminals Standard

Specifications

• Manufacturer: Eaton / Cutler-Hammer
• Model: KG3350WA12S43Z04
• Frame Type: K
• Rated Current: 350 Ampere
• Poles: 3
• Maximum Voltage: 600 VAC
• Frequency: 50/60 Hz
• Trip Unit Type: Thermal-Magnetic Interchangeable
• Magnetic Trip Range: 500–1000 Ampere
• Interrupting Capacity:
• • 18 kA @ 240 VAC
  • 14 kA @ 480 VAC
  • 10 kA @ 600 VAC
• Connection: Bolt-On
• Standard Lug Type: Line and Load End Terminals
• Warranty: One Year

Applications

• Industrial generator protection and control
• Remote tripping and monitoring via auxiliary and shunt trip options
• Switchgear and generator panel integration
• Medium-to-large generator backup systems

Notes

The product image represents a base model for identification. Eaton offers installation of your selected accessories at no additional cost—simply provide configuration instructions in the order comment box during checkout.

Returns are easy

You may return items within 30 days of delivery for a refund.

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