Square D QOB220EPD - 20 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

The Square D QOB220EPD is a 20A, 240V, 2-pole bolt-on molded case circuit breaker designed to guard your panelboards and load centers from overcurrent and short-circuit faults. Built for dependable branch circuit protection, this unit delivers consistent reliability in a compact, easy-to-install package.

Why the QOB220EPD stands out

• Secure bolt-on mounting: delivers a rigid, vibration-resistant bus connection to maintain protective alignment even in dynamic electrical environments.
• Thermal-magnetic trip unit: combines thermal overload protection with instantaneous magnetic response for stable, repeatable protection across changing temperatures and load conditions.
• OEM-compatible design: engineered to drop into matching Square D load centers and panelboards for a seamless replacement or upgrade path.
• Versatile, multi-application use: suitable for residential, commercial, and light industrial circuits that require reliable 240V branch-circuit protection.
• 2-pole, 20A protection: ideal for safeguarding multi-wire branches and shared-neutral configurations with a compact bolt-on form factor.

Technical snapshot

• Manufacturer: Square D
• Part number: QOB220EPD
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 20A
• Voltage rating: 240V
• Poles: 2
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical use cases

• Upgrade or replace protection in panelboards and load centers where a secure, vibration-resistant connection supports long-term reliability.
• Safeguard lighting, receptacle circuits, and small-motor loads in both residential and light commercial settings.
• Pair with compatible OEM enclosures to ensure proper fit, labeling, and coordination with other protective devices.

Choosing the Square D QOB220EPD means selecting a purpose-built solution that combines a sturdy mounting method with precise, reliable protection. If you’re maintaining or upgrading electrical infrastructure, this 20A, 240V, 2-pole bolt-on unit delivers dependable performance and straightforward installation across a range of panelboard configurations.