Overview
The Eaton Cutler-Hammer GI125 circuit breaker is a Type GI molded case breaker designed for industrial and commercial power distribution. This 3-pole unit provides thermal-magnetic protection against overloads and short circuits in 480 VAC systems, making it ideal for protecting branch circuits and equipment in demanding environments.
Key Features
- Type GI molded case construction for durability and reliability
- 3-pole configuration for three-phase power applications
- Thermal-magnetic trip mechanism responsive to overloads and faults
- High interrupt capacity ratings: 25,000 A @ 240 VAC, 14,000 A @ 480Y/277 VAC
- Includes top and bottom lugs for flexible conductor termination
- Manufactured in the United States
Technical Specifications
The GI125 delivers robust performance with the following specifications:
- Voltage Rating: 480 VAC
- Poles: 3
- Type: GI (Molded Case)
- Trip Mechanism: Thermal-Magnetic
- Interrupt Capacity: 25,000 A RMS symmetrical @ 240 V; 14,000 A RMS symmetrical @ 480Y/277 V
- Terminals: Top and bottom lugs (conductor compatible)
- Country of Origin: United States
Typical Applications
- Industrial control panels and motor starter circuits
- Commercial power distribution boards
- Three-phase motor circuit protection
- Manufacturing facility electrical protection
- Equipment protection in industrial environments
Compatibility & Replacements
Compatible With
- Eaton/Cutler-Hammer electrical panels and enclosures rated for GI Type breakers
- Standard industrial load centers and distribution boards
- Three-phase 480 VAC power systems
- Commercial and industrial NEMA-rated enclosures
Replaces / Drop-In Replacement For
- Other Eaton Cutler-Hammer GI-series breakers with equivalent ratings
- Verify compatibility with your system integrator before ordering to ensure proper fit and electrical ratings.
Works With
- Industrial control systems using 480 VAC three-phase power
- Eaton electrical distribution components
- Standard electrical protective relay systems
- UL 489 and CSA-certified installations
