Eaton Thermal Magnetic Circuit Breaker 20A Single-Pole 277V 14kAIC GDB Frame GHQ Series

Eaton GHQ Thermal Magnetic Circuit Breaker

Professional 20A Single-Pole Circuit Protection

The Eaton GHQ Thermal Magnetic Circuit Breaker delivers exceptional electrical power management and control performance for commercial and industrial electrical systems. This 20A single-pole thermal-magnetic circuit breaker provides reliable electrical protection designed for professional electricians, electrical contractors, and facility managers, offering the proven reliability and advanced technology that professionals trust from the global leader in intelligent power management with 14kAIC interrupt rating and 277V operation.

Professional Features & Benefits

Electrical Performance Excellence

• 20 Ampere Current Rating - Provides precise overcurrent protection for medium-duty electrical circuits with reliable thermal-magnetic trip operation
• 14kAIC Interrupt Rating - Delivers robust short-circuit protection capability for commercial electrical applications with proven fault clearing performance
• 277V Operating Voltage - Engineered for commercial lighting circuits and single-phase loads in 480V three-phase electrical systems
• Single-Pole Configuration - Optimized for single-phase circuit protection with compact GDB frame design for space-efficient panel installation

Advanced Protection Technology

• Thermal-Magnetic Trip Mechanism - Combines thermal overload protection with magnetic short-circuit protection for comprehensive electrical safety
• Non-Interchangeable Trip Design - Ensures proper amperage rating maintenance and prevents unauthorized trip unit modifications for electrical code compliance
• GDB Frame Construction - Provides robust mechanical protection and reliable electrical isolation with professional-grade materials

Professional Installation Features

• GHQ Series Design - Engineered for commercial panelboard applications with standardized mounting and connection systems
• Shunt Trip Capability - Includes 120-240V shunt trip provision for remote circuit breaker operation and emergency shutdown applications

Technical Specifications

Amperage Rating: 20A, Voltage Rating: 277V, Interrupt Rating: 14kAIC, Number of Poles: Single-pole, Frame Size: GDB, Circuit Breaker Type: GHP, Trip Type: Non-Interchangeable, Shunt Trip: 120-240V, Dimensions: 2.9" H x 2.9" D x 1" W, Weight: 0.4 lb, Certifications: UL 489, Includes 4A33462H01 load clip

Installation & Usage

1. Verify electrical panel compatibility with GDB frame circuit breakers and confirm proper voltage rating match
2. Turn off main electrical power and verify de-energized condition using appropriate electrical testing equipment
3. Install circuit breaker into designated panel slot ensuring proper mechanical engagement with bus bars
4. Connect circuit wiring to breaker terminals following NEC requirements and manufacturer torque specifications
5. Configure shunt trip connections if remote operation capability is required for the electrical application
6. Test circuit breaker operation and verify proper trip function before energizing the protected electrical circuit

Professional Applications

Ideal for:

• Commercial Lighting Systems - 277V fluorescent and LED lighting circuits in office buildings, retail facilities, and industrial complexes
• Single-Phase Equipment Protection - Motors, HVAC units, and electrical equipment operating on 277V single-phase power
• Panelboard Applications - Commercial electrical distribution panels requiring reliable overcurrent protection with remote trip capability
• Industrial Control Circuits - Process control systems and automation equipment requiring precise electrical protection
• Emergency Power Systems - Critical electrical circuits with shunt trip requirements for emergency shutdown procedures
• Facility Power Distribution - Branch circuit protection in hospitals, schools, and commercial buildings with 480V electrical systems
• Electrical Safety Systems - Fire alarm and life safety circuits requiring reliable overcurrent protection and remote operation
• Motor Control Centers - Individual motor protection in industrial MCC applications with thermal-magnetic trip characteristics

Thermal-Magnetic Protection Advantage

The GHQ series thermal-magnetic trip technology provides dual protection mechanisms with thermal elements responding to sustained overloads and magnetic elements providing instantaneous short-circuit protection. This proven protection method ensures reliable electrical safety while minimizing nuisance tripping, making it ideal for commercial electrical applications where consistent power availability is critical for business operations.

Why Choose Eaton Quality?

Eaton's century-plus experience in electrical power management innovation delivers the reliability and performance that electrical professionals demand. With comprehensive UL 489 certification and rigorous quality testing, Eaton GHQ circuit breakers provide the electrical safety standards and dependable protection that electricians, electrical contractors, and facility managers trust for critical commercial and industrial electrical applications worldwide.