Eaton Cutler Hammer HLD3400 400A 3-Pole Molded Case Circuit Breaker – Bolt-On Mount – 600V

The Eaton Cutler-Hammer HLD3400 molded case circuit breaker is designed to deliver reliable protection for electrical distribution systems in demanding commercial and industrial environments. Built on the rugged HLD frame platform, this breaker incorporates a thermal magnetic interchangeable trip unit that provides dependable protection against overloads and short circuits. Rated at 400 amperes with a 3-pole configuration, it is ideal for three-phase power systems operating up to 600VAC at 50/60Hz. With its high interrupting capacity and secure bolt-on mounting design, the HLD3400 ensures safe operation, durability, and efficient integration into compatible panelboards and switchgear systems.

Product Specification

• Brand: Eaton / Cutler-Hammer
• Model: HLD3400
• Amperage: 400 Ampere
• Number of Poles: 3 Pole
• Breaker Type: Molded Case Circuit Breaker (MCCB)
• Mount Type: Bolt-On
• Rated Voltage: Up to 600VAC
• Frame Type: L Frame
• Warranty: 1 Year

xTechnical Specification

• Trip Unit Type: Thermal Magnetic Interchangeable Trip Unit
• Trip Setting: Adjustable from 5–10 times the continuous ampere rating
• Connection Type: Bolt-On
• Standard Lug Type: Aluminum line and load end terminals
• Operating Frequency: 50 / 60 Hz
• Interrupting Design: High Interrupting Capacity
• Temperature Rating: 400A at 40°C

Voltage and Ratings

• Maximum Operating Voltage: 600 VAC
• Rated Current: 400 Ampere
• Interrupting Ratings:
• • 100 kA @ 240 VAC
  • 65 kA @ 480 VAC
  • 35 kA @ 600 VAC
  • 25 kA @ 250 VDC
• Frequency Rating: 50/60 Hz

Product Data

• Manufacturer: Eaton / Cutler-Hammer
• Product Category: Molded Case Circuit Breaker
• Frame Series: HLD Frame
• Pole Configuration: 3 Pole
• Mounting Method: Bolt-On
• Application: Commercial and Industrial Power Distribution
• Protection Type: Overload and Short Circuit Protection
• Condition: New or Reconditioned depending on supplier

Important Note

The product image may represent a base model and is provided for identification purposes only. If accessories are purchased along with the breaker, they can be installed to match your specific configuration requirements at no additional cost when specified during checkout. Always verify system compatibility and ensure installation is performed by a qualified electrician following applicable electrical codes and safety standards.

Returns are easy

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

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My Circuit Breakers provides a comprehensive 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer). Extended warranties are available upon request.