General Electrics THHQB2150ST1 - 50 A, 2-Pole Bolt-On Circuit Breaker | AmpState

General Electrics THHQB2150ST1 is a 50A, 2-pole bolt-on molded case circuit breaker designed to guard branch circuits in panelboards and loadcenters against overcurrent and short circuits. The unit blends rugged mounting with precise protection technology to keep electrical systems safe and reliable in demanding installations.

Key advantages

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection that stays tight and maintains electrical integrity in panels exposed to vibration or movement.
• Thermal-magnetic trip unit delivers instantaneous short-circuit protection plus thermal overload protection, ensuring stable, repeatable performance across varying loads and temperatures.
• OEM-compatible design fits matching OEM loadcenters and panelboards for straightforward replacement without adapters or modifications.
• Versatile application ideal for residential, commercial, and light industrial environments, protecting 50A, 240V branch circuits with reliable protection.

Practical use cases

• Upgrading a home subpanel to improve reliability for essential 240V loads like water heaters, air conditioning, or EV charging readiness.
• Replacing aging breakers in small to mid-size commercial panelboards that require durable, vibration-resistant protection.
• Integrating into light industrial control panels where secure mounting and consistent protection reduce downtime and maintenance.

Specifications at a glance

• Manufacturer: General Electrics
• Part number: THHQB2150ST1
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 50 A
• Number of poles: 2
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Choose the THHQB2150ST1 for a dependable, purpose-built solution that delivers precise protection, easy integration with existing panel systems, and long-term reliability across residential, commercial, and light industrial use cases.