Overview
The Eaton GD3100K is a Series C complete molded case circuit breaker featuring a NEMA G-frame design. This 100A 3-pole breaker provides reliable circuit protection in industrial automation, motor control centers, panelboards, and switchboards. The fixed thermal-magnetic trip mechanism delivers consistent protection against overloads and short circuits, making it suitable for continuous-duty applications in harsh industrial environments.
Key Features
- Cable-in/cable-out construction for flexible installation
- Fixed thermal-magnetic trip for coordinated overload and short-circuit protection
- NEMA G-frame design for compact mounting in standard breaker enclosures
- Dual voltage rating: 480VAC and 125/250VDC operation
- Line and load terminals included for efficient circuit connectivity
- Series C heritage ensures compatibility with legacy Eaton/Cutler-Hammer installations
Technical Specifications
The GD3100K meets industry standards for molded case circuit protection with the following rated performance:
- Amperage Rating: 100A
- Poles: 3-pole (3P)
- Voltage Rating: 480VAC/125-250VDC
- Trip Type: Fixed thermal-magnetic
- Interrupting Capacity (kAIC): 65 kAIC at 240VAC; 22 kAIC at 480VAC
- Frame Type: NEMA G-frame
- Connection Type: Cable-in/cable-out
- Wire Size: 10 to 1/0 AWG
- Operating Temperature: 40°C
- Frequency: 50/60 Hz
Typical Applications
The GD3100K is widely deployed in:
- Motor control centers (MCC) and variable frequency drive (VFD) cabinets
- Industrial control panels and automation switchboards
- Feeder/branch circuit protection in manufacturing facilities
- Busway systems and distribution centers
- Machines requiring simultaneous high current and voltage flexibility
Compatibility & Replacements
Compatible With
- Eaton Series C panel configurations
- Standard NEMA G-frame breaker enclosures
- Motor control center (MCC) bucket designs
- Switchgear requiring 100A 3-pole branch protection
- Systems using 480V three-phase power distribution
Replaces / Drop-In Replacement For
The GD3100K is a direct replacement for the non-K variant GD3100. Verify compatibility with your system integrator before ordering, as breaker frame and trip settings must match existing enclosure specifications.
Works With
- Eaton Series C molded case switch platforms
- Fixed thermal-magnetic trip coordination curves
- Standard busbar systems rated 480VAC
- Lug-terminated cable installations (10–1/0 AWG)
- NEMA enclosure types 1, 3R, 4, and 12
