GE THHQB2140 - 40 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

GE THHQB2140, a 40A, 240V, 2-pole bolt-on molded case circuit breaker, is designed to protect branch circuits in panelboards and load centers with dependable, repeatable performance. Built for rugged duty and precise protection, it’s a straightforward, reliable solution for everyday electrical protection needs.

Why this breaker stands out

• Secure bolt-on mounting: A rigid, vibration-resistant bus connection helps maintain consistent electrical contact even in panels subject to movement or vibration, reducing the risk of loose connections over time.
• Thermal-magnetic trip for stable protection: The combined thermal and magnetic trip unit delivers dependable overload and short-circuit protection, with trip characteristics that stay consistent across varying temperatures and loads.
• OEM-ready compatibility: Engineered to align with GE OEM load centers and panelboards, ensuring a clean fit, proper labeling, and smooth replacement when needed.
• Two-pole 240V protection: Simultaneous disconnection of both hot conductors enhances safety and simplifies code compliance for 240V circuits.
• Versatile for multiple sectors: An ideal choice for residential panels, commercial applications, and light industrial setups where reliable overcurrent and short-circuit protection is essential.

Technical snapshot

• Manufacturer: GE
• Part number: THHQB2140
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 40A
• Voltage rating: 240V
• Number of poles: 2
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

Perfect for upgrading or stocking panels in single-family homes, small offices, retail spaces, and light industrial sites where a dependable 40A, 240V two-pole breaker is needed to guard critical circuits against overloads and faults.

Installation and best practices

Ensure compatibility with your GE load center and follow panel labeling requirements. The bolt-on design benefits from clean bus connections and secure mounting; use appropriate tools and observe standard electrical safety protocols. When replacing an existing breaker, inspect bus connections for cleanliness and corrosion to maintain optimal performance.