Overview
The Square D HACR circuit breaker is a robust thermal-magnetic overcurrent protection device designed for 3-phase industrial and commercial applications. With a 10kA interrupt rating at 240V and dual-frequency operation (50/60Hz), this breaker provides reliable protection for motors, compressors, and other inductive loads commonly found in automation and HVAC systems.
Key Features
- Thermal-magnetic protection mechanism for coordinated overcurrent detection
- Visi-Trip visual trip indicator—red indicator appears when breaker trips
- 10kA interrupt capacity at 240V rated for industrial duty cycles
- Common-trip design ensures simultaneous operation across all three poles
- 50/60Hz dual-frequency certification for global compatibility
- HACR rated for heating, air conditioning, and refrigeration applications
- UL Listed and CSA Certified for North American installations
Technical Specifications
- Voltage Rating: 240V AC
- Phase: 3-Phase
- Poles: 3
- Interrupt Rating (AIC): 10kA at 240V
- Frequency: 50/60Hz
- Protection Type: Thermal-Magnetic
- Trip Indication: Visi-Trip visual indicator
- Certifications: UL Listed, CSA Certified, HACR Rated
- Operating Temperature Range: Up to 104°F (40°C)
- Connection: Standard line/load lugs compatible with Square D load centers
Typical Applications
- Industrial motor control centers and pump protection
- HVAC compressor and condenser unit protection
- Manufacturing automation equipment circuits
- Power distribution in commercial/light industrial facilities
- OEM machinery control panel integration
- Food processing, textile, and small industrial plant circuits
Compatibility & Replacements
Compatible With
- Square D QO load centers and panelboards
- Square D NQ and NQOD distribution panelboards
- Square D Speed-D switchboard systems
- Standard 3-phase 240V industrial distribution systems
- Thermal-magnetic trip coordination schemes
Replaces / Drop-In Replacement For
- Square D QO-series 3-pole 240V 10kA breakers
- Square D QOB-series bolt-on 3-pole configurations
- Legacy Square D thermal-magnetic 3-pole 240V units with matching amperage
- Verify exact amperage rating and mounting style (plug-in vs. bolt-on) with your system integrator before ordering
Works With
- Square D load center firmware and panel coordination systems
- Standard 3-phase power distribution design practices
- ANSI/UL 489 thermal-magnetic trip coordination
- IEC 60947-2 international motor control standards
- Common industrial PLC and motor control center wiring practices
