GE THQB2120GFEP - 20 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

GE THQB2120GFEP is a 20A, 240V, 2-pole bolt-on molded case circuit breaker engineered for reliable branch circuit protection in panelboards and load centers. Built to stand up to real-world electrical demand, this breaker delivers precise overcurrent and short-circuit protection where it matters most.

Why this breaker stands out

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection that stays tight through equipment start-ups and everyday panel activity, reducing the risk of loose connections and nuisance trips.
• Thermal-magnetic trip unit combines a thermal element for gradual overloads with a magnetic element for instantaneous response to heavy faults, delivering stable, repeatable protection that you can trust in critical circuits.
• 2-pole design for 240V circuits ensures both hot legs disconnect together, preserving safety and simplifying wiring for dual-leg loads in residential, commercial, and light industrial settings.
• OEM-compatible—designed to work with matching GE OEM panelboards and load centers, helping maintain proper fit, performance, and panel warranty when replacing or expanding an electrical system.
• Versatile applications suited for a range of environments, from home electrical panels to small commercial setups and light industrial equipment that rely on dependable 240V branch-circuit protection.

Ideal use cases

• Feeding 240V circuits in residential service panels, such as dedicated ventilation fans, window air conditioning units, or other two-pole loads that require simultaneous disconnects.
• Installing within commercial panelboards to protect critical 240V equipment while maintaining a compact, bolt-on solution that resists vibration in busy electrical rooms.
• Replacing aging or worn breakers in GE OEM panels with a like-for-like THQB family member to preserve panel compatibility and protection characteristics.

What problems this breaker solves

• Prevents nuisance trips caused by loose connections thanks to rugged bolt-on mounting.
• Provides reliable protection against both overloads and short circuits, helping to safeguard wiring, components, and connected equipment.
• Ensures safe, code-aligned disconnection for 240V two-pole circuits, reducing exposure to live components during servicing.
• Maintains compatibility within GE’s panel ecosystem, minimizing rework and ensuring consistent performance across installations.

Specifications at a glance

• Manufacturer: GE
• Part Number: THQB2120GFEP
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection in panelboards and load centers

Practical installation tips

For best results, pair this breaker with GE-compatible panelboards and load centers designed to accept THQB devices. Confirm that the panel rating and bus configuration align with a 2-pole, 240V breaker, and follow all local electrical codes during installation. When replacing an existing breaker, ensure the new device family matches the panel's design and that there is no existing damage to the bus bars or mounting surfaces.