Square D QOB315VH - 15 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Square D QOB315VH is a 15A, 240V, 3-pole bolt-on molded case circuit breaker crafted to protect branch circuits with precision in panelboards and load centers. Designed for dependable performance, it offers a secure, vibration-resistant connection that stays put even in demanding setups.

Why this breaker stands out

• Secure bolt-on mounting—provides a rigid, vibration-resistant bus connection that helps maintain consistent electrical contact and reliable protection.
• Thermal-magnetic trip unit—delivers stable, repeatable protection against overloads and short circuits, reducing nuisance trips and ensuring predictable performance.
• OEM-compatible design—built to be compatible with matching OEM loadcenters and panelboards, ensuring a clean fit and straightforward upgrade or replacement.
• Versatile applications—suitable for residential, commercial, and light industrial environments where dependable branch circuit protection is essential.

Technical snapshot

• Manufacturer: Square D
• Part Number: QOB315VH
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 15 A
• Voltage Rating: 240 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Use cases and practical scenarios

In a residential service panel or light commercial distribution panel, the QOB315VH protects critical circuits feeding equipment and outlets on a 240V system. It’s ideal when you need a robust, field-replaceable breaker that can handle occasional vibration or movement without compromising safety or performance. For retrofit projects, its bolt-on design simplifies installation in compatible panelboards, providing a secure connection that minimizes resistance and heat buildup over time.

Who benefits most

Property owners, electricians, and facilities managers looking for a reliable, OEM-compatible 3-pole breaker for 240V circuits will appreciate the QOB315VH. It’s particularly well-suited for applications where a solid mechanical bond to the bus and predictable trip behavior are priorities, such as panels in workshops, small industrial spaces, or retrofit upgrades in existing electrical infrastructure.

How it compares to typical breakers

Unlike some modular or plug-on styles, this bolt-on molded case breaker emphasizes a secure physical connection and repeatable thermal-magnetic trip characteristics. The combination of bolt-on mounting, 3-pole configuration, and 240V rating makes it a precise match for compatible panelboards, offering dependable protection without the need for additional adapters or accessories.

Maintenance and best practices

Periodic inspection of the mounting hardware and bus connections helps maintain the integrity of the bolt-on interface. Rely on the thermal-magnetic trip unit’s predictable response for routine protection; if a trip occurs, verify the load and circuit conditions before resetting. As with any overcurrent device, ensure compatible panelboard alignment and torque specifications per manufacturer guidelines.