Overview
The General Electric TEY120 is a compact, 1-pole bolt-on molded case circuit breaker designed for 277V AC lighting and power distribution panels. Part of General Electric’s Q-Line series, this TEY120 delivers thermal magnetic trip protection with a 20-amp current rating and 14kA interrupting capacity at 277V. It is engineered for grounded 480Y/277V AC systems and supports both copper and aluminum conductors, making it a standard choice for commercial and industrial electrical installations where reliable circuit protection is essential.
Key Features
- 1-pole configuration for single-phase applications
- Thermal magnetic trip mechanism for overload and short-circuit protection
- Bolt-on installation for secure, compact mounting in panelboards
- Non-interchangeable trip unit ensures consistent protection
- Compact footprint (approximately 1 inch wide per pole)
- Supports both copper and aluminum conductors
- UL Listed for compliance with electrical standards
Technical Specifications
- Current Rating: 20 Amps
- Voltage Rating: 277V AC (maximum)
- Configuration: 1-Pole, Single-Phase
- Interrupting Capacity: 14 kA @ 277V AC; 65 kA @ 120V AC
- Trip Type: Thermal Magnetic with Long-Time and Instantaneous functions
- Connection Style: Bolt-On
- Operating Temperature: Up to 40°C
- Series: Q-Line (Type TEY)
- Conductor Support: Copper and Aluminum
- Application: Lighting and power distribution in 480Y/277V AC panelboards
Typical Applications
The General Electric TEY120 is widely used in:
- Commercial and industrial lighting panel applications
- Power distribution systems requiring compact circuit protection
- Building automation and electrical distribution networks
- Industrial control panels with 277V three-phase/four-wire systems
- Facilities requiring UL-listed protective devices
Compatibility & Replacements
Compatible With
- General Electric Q-Line panelboards
- 480Y/277V AC grounded systems
- Standard bolt-on panel configurations
- Copper and aluminum conductor installations
- Commercial and industrial electrical distribution enclosures
Replaces / Drop-In Replacement For
The TEY120 is a Type TEY molded case breaker with a non-interchangeable trip unit. While it may physically fit other panelboards designed for bolt-on breakers, verify compatibility with your system integrator before ordering, as trip characteristics and mounting may vary across different manufacturer designs.
Works With
- General Electric Q-Line electrical distribution systems
- Standard bolt-on panelboard architectures
- NEMA-compliant 480Y/277V AC three-phase/four-wire systems
- UL-listed electrical enclosures and control centers
