Master-bilt 19-01312 Circuit Breaker 3 Pole 40 Amp 240V

Product Description

The MASTER-BILT 19-01312 is a QOU340 three-pole circuit breaker rated at 40 amps and 240 volts, designed as a replacement component for commercial refrigeration and food service equipment. This breaker provides overcurrent protection for three-phase or multi-leg electrical circuits within walk-in coolers, freezers, and other commercial appliances bearing the MASTER-BILT name. It is installed by licensed electricians or qualified refrigeration technicians performing electrical service on commercial-grade equipment. The QOU340 form factor is a compact, bolt-on style breaker commonly found in equipment-mounted or facility electrical panels.

This circuit breaker is intended for use in commercial refrigeration applications where a three-pole, 40-amp overcurrent protection device is required. It serves as a direct replacement part for MASTER-BILT commercial appliances and accessories, restoring proper electrical protection to the equipment circuit. Typical installations include walk-in refrigeration units, commercial freezer systems, and similar food service equipment that draws power from a 240-volt multi-pole circuit.

Key Features

• Three-pole configuration provides overcurrent protection across all legs of a 240-volt circuit
• 40-amp rating sized for commercial refrigeration compressor and equipment loads
• 240-volt rated for standard commercial power supply configurations
• QOU340 form factor for direct OEM-style fitment in compatible panel or equipment enclosures
• Genuine MASTER-BILT replacement part for commercial appliance service

Compatibility

Designed as a direct OEM replacement circuit breaker for MASTER-BILT commercial refrigeration equipment and appliances requiring a three-pole, 40-amp, 240-volt overcurrent protection device.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. Always shut off and lock out the main power supply to the equipment or panel before removing or installing the breaker. Verify the replacement breaker rating matches the original equipment specifications before energizing the circuit. Do not exceed the breaker's rated amperage by connecting loads beyond its design capacity.

Technical Specifications

• Poles: 3
• Voltage Rating: 240 volts
• Amperage Rating: 40 amps
• Model Series: QOU340

Standard Information

• Brand: MASTER-BILT
• Manufacturer Part Number: 19-01312