Square D QH-120 - 20A, 1-Pole, Circuit Breaker

Square D QH-120 is a 20-amp, 1-pole circuit breaker designed to deliver dependable overcurrent protection in demanding electrical environments. Built for panelboards, switchboards, and control panels, this breaker supports industrial, commercial, and OEM applications where safe operation and reliable protection are essential.

• Current rating: 20 A
• Poles: 1-Pole
• Type: Circuit Breaker (QH-series)
• Primary use: Protection for distribution panels and motor control centers, with flexible integration in panelboards, switchboards, and control panels

Why this matters: in any electrical distribution setup, the QH-120 provides rapid interruption of fault or overload conditions, safeguarding wiring, downstream devices, and the overall system. Its 1-pole design is well-suited for space-conscious installations where individual circuit protection is required without compromising reliability.

Ideal use cases include lighting and power circuits in commercial buildings, motor-driven equipment in industrial settings, and OEM systems where compact, reliable protection is non-negotiable. Whether you're upgrading existing panels or specifying protection for new installations, the QH-120 delivers consistent performance in distribution panels and motor control centers.

Compared to generic protection solutions, the Square D QH-120 emphasizes precision protection for each branch circuit, helping you reduce nuisance trips and extend the life of connected equipment. Its straightforward 1-pole configuration makes it a practical choice for streamlined panel layouts and organized wiring in busy electrical rooms.