Eaton Cutler-Hammer KG3300S42Z01 300A 3-Pole Generator Molded Case Circuit Breaker – Bolt-On Mount – 600VAC

The Eaton Cutler-Hammer KG3300S42Z01 is a K-frame molded case generator circuit breaker designed to provide dependable protection for generator-driven power distribution systems and industrial electrical applications. Equipped with a thermal-magnetic interchangeable trip unit, the breaker features a 500–1000 magnetic trip range to handle the high inrush currents typical in generator environments. With a 300 ampere rating at 40°C, this breaker ensures reliable overload and short-circuit protection while maintaining operational stability. The breaker includes the S42 configuration, which provides a 12–24V DC shunt trip mounted on the left pole with rear exit wiring, allowing for efficient remote tripping and emergency shutdown capability. Its bolt-on mounting design and standard line and load terminals ensure secure installation and dependable electrical connections.

Product Specifications

• Brand: Eaton / Cutler-Hammer
• Model: KG3300S42Z01
• Breaker Type: Molded Case Generator Circuit Breaker
• Frame Style: KG (K-Frame Generator Series)
• Rated Current: 300 Ampere
• Number of Poles: 3 Pole
• Trip Unit Type: Thermal Magnetic Interchangeable Trip Unit
• Trip Range: 500–1000
• Mounting Type: Bolt-On Connection
• Configuration: S42 Option Installed
• Standard Lug Type: Line and Load End Terminals Standard
• Warranty: One Year Manufacturer Warranty

Technical Specifications

• Frame Type: K-Frame
• Magnetic Trip Adjustment Range: 500–1000 Ampere
• Shunt Trip Option: S42 – 12–24V DC Shunt Trip
• Shunt Trip Mounting Location: Left Pole Mounted
• Shunt Trip Wiring Exit: Rear Exit
• Operating Temperature Reference: 40°C
• Protection Type: Overload and Short Circuit Protection
• Construction: Heavy-duty molded insulated case for industrial durability and safety

Voltage and Ratings

• Maximum Operating Voltage: 600 VAC
• Interrupting Rating: 18 kA @ 240 VAC
• Interrupting Rating: 14 kA @ 480 VAC
• Interrupting Rating: 10 kA @ 600 VAC
• Frequency Rating: 50/60 Hz

Product Data

• Manufacturer: Eaton / Cutler-Hammer
• Product Series: KG Generator Circuit Breaker Series
• Model Number: KG3300S42Z01
• Current Rating: 300A
• Number of Poles: 3
• Connection Type: Bolt-On
• Terminal Type: Standard Line and Load Terminals
• Included Configuration: S42 Shunt Trip Installed
• Typical Applications: Generator protection systems, industrial switchgear, switchboards, and commercial power distribution equipment

Important Note

The product image typically represents a standard base model for identification purposes only, and the actual configuration may vary depending on installed options or accessories. This model includes the S42 shunt trip option, enabling remote tripping functionality using a 12–24V DC control signal. If accessories are purchased together with the breaker, they can be professionally installed according to your specified configuration at no additional cost. Please provide installation details in the order comments during checkout to ensure the breaker is assembled to your exact requirements before shipment.

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You may return items within 10 days of delivery for a refund.

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