Square D QOB3150VH - 150 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Square D QOB3150VH is a rugged, bolt-on molded‑case circuit breaker engineered to deliver dependable branch‑circuit protection in panelboards and load centers. With a 150 A rating at 240 V and a 3‑pole configuration, it’s built to handle demanding commercial and light industrial circuits while staying reliable in everyday residential panels.

• Secure bolt-on mounting provides a rigid, vibration‑resistant bus connection, helping maintain consistent electrical continuity in environments with movement or vibration.
• Thermal‑magnetic trip unit delivers stable, repeatable protection for both overloads and short circuits, reducing nuisance trips and protecting sensitive equipment.
• OEM‑level compatibility ensures seamless fit and dependable performance with matching Square D load centers and panelboards, preserving proper trip curves and labeling.
• Versatile applications suited for residential, commercial, and light industrial installations—ideal for feeders, subpanels, or replacement in existing Square D systems.

Designed to safeguard your electrical system, the QOB3150VH acts as a reliable barrier against overcurrent and short‑circuit events. By combining a sturdy bolt‑on design with a precise thermal‑magnetic trip mechanism, this breaker minimizes downtime and protects wiring, devices, and occupants alike.

Key specifications at a glance

• Manufacturer: Square D
• Part Number: QOB3150VH
• Type: Thermal‑magnetic molded case circuit breaker
• Amperage Rating: 150 A
• Voltage Rating: 240 V
• Number of Poles: 3
• Mounting Style: Bolt‑on
• Application: Branch circuit overcurrent and short‑circuit protection

Who should consider this breaker? Electricians and facilities professionals stocking a reliable, long‑term replacement for compatible Square D panels, as well as builders and contractors outfitting residential, commercial, or light industrial spaces that rely on stable, code‑compliant protection. If your panelboard or load center requires a three‑pole, 150 A bolt‑on unit from the Square D family, the QOB3150VH is a purpose‑built choice that aligns with OEM specifications and field‑tested performance.

Practical tips for best results

• Use only in panels designed for bolt‑on Square D breakers to ensure proper engagement and labeling.
• Pair with corresponding OEM accessories and bus structures to maintain optimal electrical contact and trip accuracy.
• Plan for maintenance checks that verify tight mounting and clean bus connections to minimize resistance and heat buildup over time.