Eaton 666A347H07 666A 347 V Circuit Breaker

Meet the Eaton 666A347H07 circuit breaker—a robust, high-capacity protective device designed for demanding electrical systems. With a 666 A current rating and a 347 V voltage rating, this Eaton breaker is built to guard large feeders, motor circuits, and high-load distributions in industrial environments.

Key specifications

• Part Number: 666A347H07
• Current Rating: 666 A
• Voltage Rating: 347 V
• Brand: Eaton
• Type: Circuit Breaker

What makes this Eaton breaker stand out

• High-current protection for demanding installations where large feeders must be reliably safeguarded
• Compact, rugged design suitable for panelboards, switchgear, and distribution boards within industrial or commercial facilities
• Part of Eaton’s trusted circuit protection family, designed for long service life in environments that demand consistent performance
• Identifiable by part number 666A347H07, ensuring straightforward replacement and maintenance within existing Eaton systems

Ideal use cases

• Industrial facilities with heavy feeders, such as manufacturing lines and processing equipment
• Commercial buildings relying on 347 V distribution for essential systems like high-capacity lighting and HVAC control
• Data centers or critical facilities that require robust protection for large electrical feeds

Installation, compatibility, and safety tips

• Install by a licensed electrician in accordance with local codes and standards
• Confirm the panel or switchgear accepts a 666 A, 347 V rated breaker and matches the 666A347H07 part number
• Ensure proper interrupting rating and compatibility with existing protection coordination to maintain system safety
• Keep replacement part labeling clear and replace only with the identical Eaton part to preserve safety certifications