Square D QHB330 - 30A, 3-Pole, Circuit Breaker

Square D QHB330 — a 30A, 3-Pole circuit breaker engineered for dependable overcurrent protection in industrial and commercial power systems. This unit is crafted for panelboards, switchboards, and control panels, delivering consistent performance where uptime and safety are non-negotiable.

• Current rating: 30 amperes
• Poles: 3-Pole
• Breaker type: Circuit Breaker

In three-phase applications, the 3-pole design allows synchronized interruption across all active conductors, reducing fault energy and protecting connected equipment. This makes the QHB330 an ideal choice for protecting motors, drives, feeders, and other demanding loads in environments where reliable protection and safe operation matter most.

Ideal for industrial, commercial, and OEM applications, this Square D breaker integrates seamlessly into distribution panels and motor control centers, offering:

• Versatile use in panelboards, switchboards, and control panels that rely on precise, real-time protection
• A trusted Square D lineage known for compatibility with compatible enclosures and upstream protection schemes
• A compact, durable solution designed to withstand the demands of everyday operation in active electrical rooms

Why this 3-Pole, 30A option stands out is its focused balance of protection and practicality for 3-phase circuits: it delivers reliable interruption when faults occur, helps minimize equipment damage, and supports safe maintenance workflows in distribution systems and motor control centers. For facilities upgrading, expanding, or standardizing three-phase protection, the QHB330 provides a straightforward, dependable path to enhanced electrical safety and system uptime.

Practical considerations — plan for proper enclosure compatibility, confirm upstream protection coordination, and keep spare units on hand for OEM or service needs. The Square D QHB330 is a purpose-built choice for professionals who demand measured protection without compromise.