The QT MAX 10 HP is built for continuous-duty shops where protecting the compressor matters just as much as producing air. Its two independent shutdown systems address two different failure modes: a factory-fitted magnetic starter with thermal overload protection helps prevent motor damage from overload conditions, while a low-oil cut-off stops the pump if the oil level falls too far. Behind those safeguards is a splash-lubricated cast-iron two-stage pump delivering 35 CFM at 175 PSI into a 120-gallon vertical ASME receiver. Note: this configuration requires 460V, 3-phase power.
The protection systems are especially useful when the compressor runs for long periods without constant supervision. The magnetic starter monitors motor load and can shut the unit down during an overload condition, while the low-oil cut-off directly protects the pump from operating with insufficient lubrication. An oil sight glass provides a quick visual check before operation, so routine inspection can catch a problem before either shutdown has to intervene. The two-stage pump also uses a finned intercooler and air-cooled aftercooler to control compression temperatures during extended operation.
This model is suited to automotive repair shops, fleet facilities, fabrication operations and other commercial applications that already have 460V three-phase service and need a compressor capable of sustained use. Its vertical receiver keeps the floor footprint around 40" × 30", but the approximately 75" overall height and 1,000 lb weight require a suitable installation area. Provide a solid, level concrete pad, adequate airflow around the cooling components and enough clearance for service access.
Two details should be confirmed before purchase. The available information lists different model codes, 4103D12VCB46M and 2103D12VCB46M; provide the code from your quote or purchase order so the exact build can be verified. Published information also conflicts on the automatic electronic tank drain, with some sources listing one and the specification field saying it is not fitted. If that feature is important to your installation, confirm the configuration in writing before ordering. Electrical feeder, disconnect and protection sizing should be determined by a certified electrician for your specific 460V service.
Two things to check before ordering
The part number. Our title, description and specifications list 4103D12VCB46M, while the page URL and one sentence list 2103D12VCB46M. Send us the code on your quote or purchase order and we will confirm the correct build with the manufacturer.
The automatic tank drain. The feature list and description say an automatic electronic drain is included, while the specification field says it is not. If the automatic drain matters to your purchase, ask us to confirm it in writing before ordering.
Two layers of protection
The factory-installed magnetic starter includes an overload relay that protects the motor from excessive current caused by conditions such as a stalled pump or phase failure.
The low-oil cutoff protects the pump from a different problem: insufficient lubrication. It shuts the compressor down if the oil level becomes dangerously low. An oil sight glass provides a quick visual check before operation.
Why 460V matters
This version is designed for facilities with 460V, 3-phase power. Higher voltage generally means lower current for the same power output, which can allow smaller conductors and feeders than lower-voltage configurations.
Quincy does not specify a universal breaker size because the correct selection depends on the installation and local code. Have a certified electrician confirm the feeder, disconnect and protection before ordering. This model is factory-wired for 460V and is not field-convertible to another voltage.
Designed to run cool
The QT MAX pump operates at a deliberately low speed to reduce heat and wear, supporting its 100% duty-cycle design. A finned intercooler between compression stages and an air-cooled aftercooler before the tank provide additional temperature control.
Will it fit?
The vertical package occupies approximately 40" × 30" of floor space, stands about 75" tall and weighs 1,000 lbs.
Check ceiling height, doorways and the complete delivery route before ordering. Install it on level, solid concrete with sufficient clearance for cooling airflow and service access.
Specifications
| Model |
4103D12VCB46M (a second code appears in our data - see above) |
| Motor |
10 HP, 460 Volt, 3-phase |
| Delivered air |
35 CFM at 175 PSI |
| Duty cycle |
100% |
| Pump |
Two-stage, cast iron with aluminum head, enclosed belt drive, splash lubricated |
| Motor protection |
Magnetic starter with thermal overload, factory wired |
| Pump protection |
Low oil cut-off switch, oil sight glass |
| Cooling |
Finned interstage intercooler and air-cooled aftercooler |
| Tank |
120 gallon, vertical, ASME |
| Tank outlet |
1 inch |
| Dimensions |
40 inches by 30 inches, 75 inches tall |
| Weight |
1,000 lbs |
| Automatic tank drain |
Published details differ - confirm before ordering |
| Warranty |
1-year factory, extending to a 3-year term on the manufacturer conditions |
Perfect For
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Facilities with 460V three-phase power that want to match their existing service.
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Unattended or continuous operation, where built-in protection helps prevent major damage.
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Production shops running blasting, finishing or assembly equipment continuously.
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Maintenance teams that value automatic shutdown protection.
What's In The Box
The factory-assembled package includes the two-stage pump, motor, enclosed belt drive and guard, 120-gallon vertical receiver, magnetic starter, low-oil cutoff, oil sight glass, intercooler and aftercooler.
The buyer supplies the electrical feed, disconnect and protection, downstream piping, additional filtration or drying, isolation pads and first-service consumables. No air dryer is included.
Certification, stated honestly
The manufacturer lists an ASME tank with UL and CSA marks. These certifications apply to the equipment as manufactured, not to the installation.
Your electrician must verify the feeder, disconnect, overcurrent protection and ventilation requirements for your site. If your insurer or local authority requires additional documentation, ask us before ordering so we can obtain it from the manufacturer.
Shipping and Delivery
This compressor ships by freight to the lower 48 states, with shipping calculated at checkout. Residential deliveries may incur an additional fee. Commercial delivery with a dock or forklift, or terminal pickup, may be more practical.
At approximately 1,000 lbs, suitable unloading equipment is required. Inspect the crate and compressor before signing and document any damage on the bill of lading.
Warranty
The unit includes a 1-year factory warranty, with eligibility for an extended 3-year term when the manufacturer's registration and maintenance requirements are met. Confirm the current conditions with us before purchase.
