GE THQB1140 - 40 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState

GE THQB1140 is a 40A, 120V, 1-pole bolt-on molded case circuit breaker from AmpState, engineered to deliver reliable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters.

Designed for rugged panel environments, this breaker features secure bolt-on mounting that creates a rigid, vibration-resistant bus connection. That means steadier trip performance and fewer nuisance trips caused by mechanical looseness or vibration in busy electrical panels.

Equipped with a thermal-magnetic trip unit, the THQB1140 provides stable, repeatable protection across a wide range of operating conditions. The thermal element responds to sustained overloads, while the magnetic element handles instantaneous short-circuit events, delivering fast, predictable disconnection to safeguard wiring and connected equipment.

The THQB1140 is compatible with matching OEM load centers and panelboards, ensuring a clean, plug-in replacement path within the same electrical system. This makes it a practical choice for upgrades, service replacements, or new installations that use bolt-on breakers in standard 1-pole configurations.

Ideal for residential, commercial, and light industrial applications, this breaker protects individual branch circuits—from lighting and outlets to small equipment feeders—while fitting neatly into standard bolt-on installations. Its 1-pole design is well-suited for dedicated circuits where simple, reliable disconnection is required, and its 120V rating aligns with typical consumer and light commercial electrical systems.

• Guaranteed performance in panel environments thanks to bolt-on mounting that minimizes connection movement and arcing risk under vibration.
• Precise protection through a thermal-magnetic trip unit that responds predictably to overloads and short circuits.
• Seamless integration with OEM load centers and panelboards designed for bolt-on breakers.
• Versatile use cases across residential, commercial, and light industrial settings, providing targeted protection for individual circuits.

Technical snapshot

• Manufacturer: GE
• Part Number: THQB1140
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 40A
• Voltage Rating: 120V
• Number of Poles: 1
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Whether you’re upgrading an aging panel, replacing a failed breaker, or stocking a spare for upcoming service work, the GE THQB1140 delivers dependable protection with installation simplicity. Rely on its robust construction and proven thermal-magnetic performance to keep circuits safe and systems running smoothly in everyday electrical environments.