A10CN0 Cutler-Hammer NEMA Size 1 Motor Starter, 27A 600V 3-Pole 3-Phase
Trying to work out whether the A10CN0 is the right starter for your motor? Here is the plain version. This Eaton Cutler-Hammer part is a NEMA Size 1 motor starter, which means it switches a three-phase motor on and off and protects it from overload. It works on systems up to 600 volts and handles motors as large as 10 HP.
A motor starter is a heavy-duty switch (a contactor) paired with an overload relay that trips if the motor pulls too much current. This one carries 27 amps continuously across three poles and uses a common 120 volt control coil, so it makes a clean stand-in for an aging Series A1 unit.
Common Applications
- Turning three-phase pumps and fans on and off
- Heating, cooling, and ventilation equipment
- Conveyor belts and packaging machines
- General shop and factory motors
- Replacing a worn or failed Series A1 starter
Key Features
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Motor overload protection: The built-in relay trips before the motor overheats.
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Fits common systems: Runs on three-phase power up to 600 volts.
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Right-sized: NEMA Size 1 carries 27 amps for motors to 10 HP.
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Simple control: A standard 120 volt coil switches it on and off.
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Easy swap: Matches the older Series A1 Size 1 mounting.
Specifications
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Manufacturer: Eaton (Cutler-Hammer)
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Catalog Number: A10CN0
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Product Line: Series A1
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Type: Full voltage non-reversing magnetic motor starter
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NEMA Size: 1
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Construction: Open type
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Continuous Current: 27 A
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Maximum Voltage: 600 V AC
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Poles: 3
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Phase: 3-phase
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Coil Voltage: 120 V 60 Hz / 110 V 50 Hz
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Horsepower: 3 HP at 115 V; 7.5 HP at 200/230 V; 10 HP at 460/575 V
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Overload Relay: Melting-alloy thermal, 3 elements
Product Identification
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Manufacturer: Eaton (Cutler-Hammer)
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Catalog Number: A10CN0
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Product Line: Series A1
FAQ
What does the A10CN0 do?
It switches a three-phase motor on and off and keeps it from drawing too much current, on systems up to 600 volts.
How big a motor will it handle?
Motors up to 3 HP at 115 V, 7.5 HP at 200/230 V, or 10 HP at 460/575 V.
What is the coil voltage?
It uses a 120 volt 60 Hz control coil (110 volt 50 Hz), which is the most common kind.
Is overload protection included?
Yes, an overload relay is built in to guard the motor. You match the heater elements to your motor current.
Will it replace an older Series A1 starter?
Yes, it is the same Series A1 NEMA Size 1 design and fits the same spot. Check the coil voltage and heater size.
