HKDDC3350 350 Amp 3-Pole Generator Circuit Breaker – Bolt-On – 600VAC – A06 & S42 Options

The HKDDC3350 is a J-frame molded case generator circuit breaker with a thermal magnetic interchangeable trip unit, designed for generator circuit protection. Rated at 350 A at 40°C with a trip range of 350–700A, this 3-pole breaker includes advanced configuration options for auxiliary and shunt trip functionality. It features line and load end terminals and supports 600VAC operation.

Product Specifications

• Manufacturer: Eaton / Cutler-Hammer
• Model: HKDDC3350 
• Breaker Type: Molded Case Generator Circuit Breaker (MCGB)
• Frame Type: J Frame
• Rated Current: 350 Amp
• Number of Poles: 3
• Mounting Type: Bolt-On
• Trip Unit Type: Thermal Magnetic Interchangeable
• Terminal Type: Line and Load End Standard
• Warranty: 1 Year
• Trip Range: 350–700A
• Interrupting Capacity:
  • 18 kA @ 240 VAC
  • 14 kA @ 480 VAC
  • 10 kA @ 600 VAC
• Configuration Options:
  • A06: 1-A(Open) & 1-B(Closed) Auxiliary Installed, Right Pole Mounted, Exiting Rear
  • S42: 12–24V DC Shunt Trip, Left Pole Mounted, Exiting Rear

Technical Highlights

• Thermal magnetic protection against overload and short-circuit
• Interchangeable trip unit for flexible deployment
• A06 auxiliary contacts and S42 shunt trip enhance monitoring and control
• High interrupting capacity ideal for generator applications
• Reliable 600VAC operation

Important Note

The product image represents a base model for identification purposes only. Accessories purchased with the breaker can be installed at no additional cost. Provide accessory details in the order comment box during checkout to ensure proper configuration.

Returns are easy

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

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