Square D QOB230VH - 30 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

The Square D QOB230VH is a rugged 30A, 240V, 2-pole bolt-on molded case circuit breaker designed to protect branch circuits from overcurrent and short circuits in panelboards and load centers. Built for durability in environments where vibration and harsh conditions are common, this breaker delivers trusted performance for a wide range of applications.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, minimizing movement and maintaining reliable electrical contact over time.
• Thermal-magnetic trip unit offers stable, repeatable protection—responding to sustained overloads and sudden short circuits with precise coordination to prevent nuisance trips.
• OEM-compatible design is ready to pair with matching Square D load centers and panelboards, making replacements and panel upgrades straightforward.
• Versatile application suited for residential panels, commercial service entrances, and light industrial setups where dependable overcurrent protection is essential.
• 2-pole construction ensures simultaneous tripping of both poles, helping to prevent dangerous line-to-neutral faults and maintaining system integrity.

Use cases and scenarios

• Replacing aged or failed breakers in home or small business panels to restore safe, code-compliant protection.
• Feeding critical branch circuits in garages, workshops, and small offices where reliable 30A protection is needed at 240V.
• Expanding load centers or upgrading from outdated protection devices while maintaining compatibility with Square D OEM equipment.

Technical specifications at a glance

• Manufacturer: Square D
• Part Number: QOB230VH
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 30A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Why choose bolt-on for panel installations

• Bolt-on mounting offers a robust, vibration-resistant connection ideal for panels subjected to movement, equipment, or surface vibration.
• Designed to align precisely with compatible OEM panelboard layouts, reducing installation time and ensuring a secure fit.

Practical insights

• Ensure the breaker is used in a compatible Square D OEM panelboard or load center to maintain proper trip coordination and warranty considerations.
• Follow standard electrical safety practices: de-energize the panel, verify conductor sizes, and torque bolts per manufacturer specifications to guarantee a solid connection.
• Pair with appropriately sized conductors for 30A circuits and route wiring to minimize heat buildup and ensure reliable operation over time.

With the Square D QOB230VH, you gain dependable protection, durable construction, and compatibility you can trust for residential, commercial, and light industrial electrical systems.