Eaton Series C K-Frame Mining Circuit Breaker 400A 3-Pole with Interchangeable Rating Plug

Eaton Series C K-Frame Mining Circuit Breaker 400A 3-Pole with Interchangeable Rating Plug

Professional Mining-Grade Circuit Protection with Adjustable Rating Technology

The Eaton Series C K-Frame Mining Circuit Breaker delivers robust 400A three-pole circuit protection designed specifically for demanding mining applications. This specialty frame-only unit features interchangeable thermal-magnetic trip technology with adjustable rating plugs (70, 90, 100, 125A) and independently adjustable short time pick-up delay for precise load management. Built with UL Listed quality and 35 kAIC interrupt rating at 480 Vac, this breaker provides reliable protection in harsh industrial environments up to 1000Y/577V maximum voltage.

Professional Features & Benefits

• 400A Amperage Rating: Handles high-capacity electrical loads with reliable overcurrent protection for critical mining operations.
• K-Frame Mining Design: Specialty frame construction engineered for the demanding conditions and vibration resistance required in mining applications.
• Interchangeable Rating Plug System: Adjustable 70, 90, 100, 125A rating plugs provide flexible protection settings without breaker replacement.
• 35 kAIC Interrupt Rating: High fault current interruption capability at 480 Vac ensures safe system protection during electrical faults.
• Independently Adjustable Short Time Delay: 125A two- and three-pole pick-up with delay settings enable precise coordination with downstream protective devices.
• UL Listed Certification: Meets rigorous safety and performance standards for commercial and industrial electrical installations.
• 1000Y/577V Maximum Voltage: Compatible with high-voltage systems commonly found in mining and heavy industrial applications.

Technical Specifications

• Amperage Rating: 400 A
• Auxiliary Switch: 1A-1B right pigtail rear
• Certifications: UL Listed
• Frame Size: K-frame
• Interrupt Rating: 35 kAIC at 480 Vac
• Number Of Poles: Three-pole
• Pick Up Delay: 125A two- and three-pole independently adjustable short time
• Product Details: Specialty frame only
• Product Height: 13 in
• Product Length Depth: 7 in
• Product Width: 11 in
• Rating Plug: 70, 90, 100, 125A adjustable interchangeable
• Series: Series C
• Terminals: T300K line, load English end cap
• Trip Type: Interchangeable thermal-magnetic
• Voltage Max: 1000Y/577V

Installation & Operation

1. Mount the unit in a suitable location with appropriate clearance and access for connections and service.
2. Connect utility and load conductors following applicable guidelines and the manufacturer's instructions.
3. Wire generator or power input according to the provided voltage/phase specifications and compatible capacity.
4. Configure any available load management or control features as supported by the provided specifications.
5. Test automatic transfer or operational functionality and verify proper performance before placing into service.
6. Complete final inspection and follow ongoing maintenance practices appropriate to the product category.

Professional Applications

• Mining Operations and Processing Facilities
• Heavy Industrial Manufacturing Plants
• Large Motor Control Centers
• High-Voltage Distribution Systems
• Critical Infrastructure Protection
• Commercial Mining Equipment
• Industrial Power Distribution Panels

Why Choose Eaton Quality?

Eaton Series C circuit breakers represent proven reliability in demanding industrial environments. With UL Listed certification, robust K-frame construction, and interchangeable rating plug technology, this mining-grade breaker delivers the durability and flexibility required for critical electrical protection applications.