GE THHQB21100 - 100 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the GE THHQB21100: a 100 A, 240 V, 2-pole bolt-on molded case circuit breaker engineered for dependable branch circuit protection in panelboards and load centers. Built to withstand the demands of residential, commercial, and light industrial environments, this breaker delivers consistent protection where it matters most—right at the source.

Why this GE breaker stands out

• Secure bolt-on mounting provides a rigid, vibration-resistant connection to the bus, helping maintain a reliable feed even in active electrical environments.
• Thermal-magnetic trip unit delivers stable, repeatable protection performance for both overcurrent and short-circuit conditions, minimizing nuisance trips while safeguarding wiring and equipment.
• OEM-compatible design is ready to drop into matching GE panelboards and other OEM load centers, simplifying replacements and upgrades without compatibility guesswork.
• Versatile for multiple settings—suitable for residential panels, commercial service equipment, and light industrial installations where dependable protection is crucial.
• 2-pole, 100 A, 240 V—a balanced solution for protecting large branch circuits and feeders that require a robust, coordinated protection strategy.

Ideal use cases and practical scenarios

• Upgrading outdated protection in home electrical panels where a reliable 100 A, 240 V main or feeder circuit is needed.
• Installing or expanding load centers in small commercial spaces to safeguard lighting, outlets, and critical equipment.
• Replacing worn or malfunctioning breakers in retrofit projects where compatible GE components ensure smooth performance with existing gear.
• Applications in light industrial settings where durable bolt-on mounting reduces the risk of connection loosening due to vibration or activity.

Compatibility, installation considerations, and best practices

Designed to pair with GE panelboards and other OEM load centers, the THHQB21100 provides a straightforward path to reliable protection in common electrical architectures. Its bolt-on style simplifies mounting and alignment with the bus, helping installers achieve a solid, long-lasting connection. When integrating this breaker, verify that your panelboard specifications match the 2-pole, 100 A, 240 V rating and that the thermal-magnetic protection curve aligns with your protection coordination plan for the circuit or feeder being protected.

Technical specifications

• Manufacturer: GE
• Part Number: THHQB21100
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 100 A
• Voltage Rating: 240 V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Whether you’re upgrading a panel, replacing a failed unit, or building out a new electrical system, the GE THHQB21100 offers dependable protection, straightforward compatibility, and a robust build designed for long-term performance in a variety of settings.