Square D QOB380VH - 80 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Square D QOB380VH—an 80A, 240V, 3-pole bolt-on molded case circuit breaker designed for dependable branch circuit protection in panelboards and load centers. Built to endure demanding environments, this unit delivers stable, repeatable protection with a secure, vibration-resistant connection that stays tight where others loosen over time.

Key features that matter in real-world work:

• Secure bolt-on mounting for a rigid, vibration‑resistant bus connection, reducing the risk of loose connections in duct, commercial, or industrial spaces.
• Thermal-magnetic trip unit provides precise overload protection and fast short‑circuit interruption, delivering dependable protection curves under varying load conditions.
• 3-pole, 80A, 240V design ideal for 3‑phase circuits or multi‑wire feeder protection in panelboards and load centers.
• OEM compatibility crafted to pair with matching Square D OEM load centers and panelboards, ensuring clean fits and predictable performance.
• Versatile applications suitable for residential, commercial, and light industrial installations where bolt-on protection is specified.

Why this breaker matters for your electrical system

When building or upgrading a distribution panel, the QOB380VH delivers more than just amperage and voltage ratings. The bolt-on mounting minimizes connection stress and vibration-related wear, while the thermal-magnetic trip unit offers reliable protection against both overcurrent and short circuits. This means fewer nuisance trips, consistent protection across temperature swings, and a safer, more resilient electrical distribution path for your loads.

Technical snapshot

• Manufacturer: Square D
• Part Number: QOB380VH
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 80A
• Voltage Rating: 240V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Who should consider the Square D QOB380VH

Electrical professionals and facilities managers who design, upgrade, or maintain panelboards and load centers in settings ranging from home electrical rooms to small commercial and light industrial environments. If your installation requires a bolt-on, 3‑pole unit that can handle up to 80A at 240V, the QOB380VH is a purpose-built fit that integrates smoothly with compatible Square D systems.

Practical installation and usage tips

• Verify panelboard compatibility with the QOB family to ensure seamless mounting and electrical clearance.
• Install using the proper torque for bolt-on connections and recheck after initial energization to confirm a stable, vibration-free fit.
• Use in projects that demand robust fault protection in spaces where vibration or movement is a factor, such as equipment rooms or distributed enclosures.
• Pair with matching OEM components to maintain consistent trip characteristics and predictable replacement behavior.

In short, the Square D QOB380VH is not just another breaker—it’s a purpose-built solution for reliable, code-compliant protection in panels and load centers. For professionals designing or upgrading 240V, three‑pole distribution with durable bolt‑on mounting, this unit delivers the performance you can count on day after day.