Description
The Square D Q221150AC is a two-pole molded case circuit breaker designed to provide dependable overcurrent and short-circuit protection in low-voltage power distribution systems. Rated at 150 amps and 240 volts AC, this breaker uses thermal-magnetic trip technology to deliver long-time and instantaneous protection. It is engineered for single-phase applications requiring reliable circuit interruption.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Square D |
| Category |
Circuit Protection |
| Part Number |
Q221150AC |
| Subcategory |
Circuit Breakers |
| Series |
Q2 |
| Product Type |
Molded Case Circuit Breaker |
| Frame Type |
Q221 |
| Rated Current |
150 A |
| Number of Poles |
2 |
| Phase |
Single Phase |
| Voltage Rating |
240 VAC |
| Protection Type |
Thermal-Magnetic |
| Interrupting Rating |
10 kAIC @ 240 V |
| Functions |
Long-Time and Instantaneous (LI) |
| Approval |
UL Listed |
| Frequency |
50/60 Hz |
| Application |
Power Distribution |
| Weight |
4.29 lb |
Information About Q221150AC
The Q221150AC is part of Square D’s Q2 series of molded case circuit breakers, developed for compact and efficient branch and feeder circuit protection. This breaker incorporates a thermal-magnetic trip unit that responds accurately to overload and fault conditions. Its two-pole configuration supports single-phase electrical systems operating at 120/240 VAC. Manufactured to meet UL standards, the breaker is intended for dependable performance in commercial and light industrial electrical installations.
Key Features:
- 150 Amp Current Rating: Designed to protect higher-capacity branch and feeder circuits.
- Two-Pole Configuration: Supports single-phase 120/240 VAC electrical systems.
- Thermal-Magnetic Protection: Combines long-time overload and instantaneous short-circuit response.
- 240V Voltage Rating: Suitable for low-voltage power distribution applications.
- 10 kA Interrupting Rating: Rated for fault protection at 240 VAC.
- UL Listed: Manufactured to recognized electrical safety standards.
The Q221150AC delivers the reliability and precision required for single-phase power distribution protection.
