THQP140 40A 1P 240V Circuit Breaker, Plug-On | AmpState

Protect essential circuits with the THQP140 40A 1P 240V Plug-On Circuit Breaker, now available from AmpState. Engineered for reliability in panelboards, load centers, and electrical distribution systems, this 1-pole, 240V breaker delivers consistent overcurrent protection where it matters most.

Why this THQP140 stands out in real-world installs

• Plug-On convenience— fast, tool-assisted installation that snaps onto the bus and locks into place for a secure, dependable connection.
• 40 A, 1-pole, 240V design tailored for single-phase circuits commonly encountered in both residential and light commercial setups.
• BOM-friendly replacement— ideal for projects requiring a precise part number to maintain documentation and spare inventories.
• Versatile compatibility— proven fit for panelboards and load centers that support THQP-series breakers, simplifying stocking and maintenance.
• AmpState support— available through AmpState with assistance to verify fit against your panel model and original part number.

What makes this breaker a smart choice

• Designed to align with THQP-series footprints, ensuring reliable electrical contact and predictable trip characteristics in 240V circuits.
• Stocking this part reduces downtime in maintenance programs by keeping critical protection components on hand and correctly cataloged in the BOM.
• Clear ratings and labeling expedite on-site decision-making, helping electricians select the correct protection level without guesswork.

Practical use cases

• Replacement projects where the original part number is specified in panel documentation, ensuring a seamless retrofit with minimal panel modification.
• Maintenance stocking for facilities with 240V single-phase distribution, enabling quick swaps during routine service calls.
• New installations in compatible load centers that require a plug-on, single-pole protection solution for downstream equipment.

Installation tips and best practices

• Power down the main and verify zero voltage before handling the breaker or any panel components.
• Confirm panel compatibility with THQP-series breakers to ensure a proper plug-on fit and reliable operation.
• Apply the correct torque when securing the breaker to maintain a solid electrical connection and long-term performance.
• Keep a small inventory of THQP140 units on hand to streamline future replacements and keep your BOM aligned.

If you’re unsure about fit or need help confirming compatibility, AmpState is ready to assist. Send us details about your panel model and the original part number, and we’ll verify compatibility and help you complete your order quickly.