Square D QHB325 - 25 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Engineered for dependable branch circuit protection, the Square D QHB325 is a 25-amp, 240-volt, 3-pole bolt-on molded case circuit breaker built to defend panelboards and loadcenters from overcurrent and short circuits. Its secure bolt-on mounting delivers a rigid, vibration-resistant bus connection, maintaining electrical integrity even in demanding environments.

Why the QHB325 stands out

• Bolt-on mounting: A tight, vibration-resistant installation that stays solid over time, reducing loose connections and re-trips.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection by automatically responding to both overcurrent and short-circuit conditions.
• 3-pole design: Provides coordinated protection for 240V systems, ideal for multi-phase circuits and equipment with balanced loads.
• Molded case reliability: Rugged construction purpose-built for continuous service in panelboards and loadcenters.
• OEM compatibility: Designed to pair with matching Square D OEM loadcenters and panelboards for a seamless fit and dependable operation.

Key specifications at a glance

• Amperage rating: 25A
• Voltage rating: 240V
• Poles: 3
• Mounting style: Bolt-on
• Type: Thermal-magnetic molded case circuit breaker
• Manufacturer/Part: Square D, QHB325

Ideal applications and use cases

This breaker is designed for branch circuit overcurrent and short-circuit protection in a range of settings. It’s an excellent upgrade or replacement component for:

• Residential panelboards where reliable protection and compact, secure mounting are priorities
• Commercial electrical panels that require durable, vibration-resistant performance
• Light industrial electrical assemblies that demand stable, repeatable trip characteristics

Installation, compatibility, and practical insights

With its bolt-on mounting, the QHB325 is straightforward to install in compatible Square D panelboards and loadcenters, ensuring a solid bus connection that minimizes movement-related wear. The thermal-magnetic trip mechanism provides immediate protection against short circuits while accommodating normal inrush currents, helping prevent nuisance trips during startup. When selecting a replacement or addition, choosing the QHB325 helps you maintain a cohesive protection scheme throughout the electrical system.

Performance you can rely on

In everyday operation, this device guards circuits against overloads and faults with precision. Its 3-pole configuration suits 240V systems that require synchronized protection across multiple conductors, while the molded case design offers durability in challenging environments. For facilities seeking a dependable, OEM-compatible solution that aligns with standard panelboard configurations, the QHB325 delivers predictable, repeatable protection every time.

Who should consider this breaker?

Ideal for electricians, facility managers, and property technicians who need a trustworthy, OEM-compatible, bolt-on circuit breaker that performs consistently in panelboards and loadcenters across residential, commercial, and light industrial settings. If you’re upgrading an existing installation or stocking spare parts for service readiness, the Square D QHB325 provides a robust, long-lasting protection option.