Square D QDA221504 - 150 A, 240 V, 2-Pole Plug-In Circuit Breaker | AmpState

Introducing the Square D QDA221504—a 150A, 240V, 2-pole plug-in molded case circuit breaker designed to safeguard your most critical branch circuits with precision. Built for dependable overcurrent and short-circuit protection in panelboards and load centers, this unit is crafted to keep electrical systems running smoothly under demanding conditions.

• Fast plug-in connection for quick installation and trouble-free replacements, reducing downtime and mechanical wear during service calls.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining thermal sensing for overload with magnetic trip for immediate response to short circuits.
• OEM compatibility ensures seamless integration with matching Square D load centers and panelboards, preserving protection coordination and system reliability.
• Versatile application suited for residential, commercial, and light industrial environments where robust feeder protection is essential.
• Clear specifications 150A, 240V, 2-pole, molded case design for durable performance in crowded panels and high-demand installations.

Why choose the QDA221504 in your panel system

This plug-in breaker is purpose-built for Square D panel ecosystems, eliminating guesswork and ensuring consistent protection across devices. The plug-in format minimizes field wiring errors and delivers a secure, long-lasting connection that stays tight even in vibration-prone or busy electrical spaces.

Ideal use scenarios

Use this 2-pole breaker to protect large-draw branch circuits, feed subpanels, or high-load equipment in homes, small offices, workshops, or light industrial setups. When upgrading an aging panel or expanding your power distribution, this 150A unit provides reliable, responsive protection without compromising panel compatibility.

Specifications

• Manufacturer: Square D
• Part Number: QDA221504
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 150A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection