GE THQB32100ST1 - 100 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the GE THQB32100ST1, a rugged 100A, 240V, 3-pole bolt-on molded case circuit breaker built for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Designed for real-world use in residential, commercial, and light industrial settings, this breaker combines solid construction with precise, repeatable protection performance.

Why this breaker stands out

• Secure bolt-on mounting: A rigid connection to the bus minimizes movement and vibration-related concerns, helping prevent loose-term connections and ensuring consistent protection under demanding service conditions.
• Thermal-magnetic trip unit: The thermal element provides stable overload protection, while the magnetic element delivers instantaneous response to short-circuits, giving you reliable protection when it matters most.
• GE OEM compatibility: Designed to fit GE OEM load centers and panelboards, making replacement or upgrades straightforward and ensuring coordinated protection within your existing system.
• Versatile three-pole design: Ideal for three-phase circuits and multi-pole protection in commercial and light industrial panels, while retaining suitability for residential installations that require three-phase handling.

What it protects and where it fits

The THQB32100ST1 provides branch circuit overcurrent and short-circuit protection for panelboards and load centers. With a 100A rating and 3-pole configuration, it’s well-suited for mid-size distribution applications, feeders, and main-breaker configurations in spaces where reliability and coordinated protection are essential.

Technical snapshot

• Manufacturer: GE
• Part number: THQB32100ST1
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 100A
• Voltage rating: 240V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection in panelboards and load centers

Ideal for

• Electrical contractors upgrading or expanding GE-compatible panelboards and load centers
• Residential service upgrades that require dependable three-pole protection for 3-phase equipment or feeders
• Commercial lighting and small industrial control panels needing robust, repeatable trip performance

Practical tips for use

• When retrofitting, verify compatibility with your existing GE OEM panelboard to ensure seamless electrical coordination and labeling accuracy.
• Follow standard safety practices and manufacturer instructions during installation to maintain a solid, vibration-resistant connection.
• Consider pairing with other GE thermal-magnetic breakers in your system to maintain a balanced protection scheme across three-phase circuits.

Choose the GE THQB32100ST1 for a dependable, bolt-on protection solution that delivers stable, repeatable performance in a variety of panel configurations. Built to protect what matters—wiring, equipment, and people—this 100A, 240V, 3-pole breaker is ready for installation in residential, commercial, and light industrial environments.