Cutler Hammer A10CNO Motor starters

Cooper Crouse-Hinds Cutler-Hammer A10CNO Overview

The Cutler-Hammer (now a brand under Eaton) A10CNO is a manual motor starter without magnetic overload protection. It is primarily used for simple start and stop control of small electric motors and resistive loads where overload protection is either not required or is provided by other devices.

Product Detailed Description

• Function:

• Manually starts and stops single-phase or three-phase AC motors.

• Can also be used to control resistive loads.

• Does not provide built-in magnetic overload protection. Overload protection must be provided by external devices such as fuses or circuit breakers.

• Features:

• Manual operation, typically via a toggle switch or push button.

• Compact design.

• Rugged construction for industrial and commercial applications.

• Available in various mounting options, such as surface mounting or flush mounting.

• May have auxiliary contacts for status indication or other control functions (depending on the specific model).

Product Parameters

As the Cutler-Hammer A10CNO may have different configurations and ratings, the following are general parameters. Always refer to the specific model's nameplate or official product manual:

• Voltage Rating:

• E.g., 115/230 VAC (Single Phase), 200/230/460/575 VAC (Three Phase)

• Current Rating:

• Wide range depending on the specific model. E.g., 10A, 18A, 30A.

• Number of Poles:

• Typically 2-pole or 3-pole.

• Horsepower Rating:

• Suitable for specific horsepower ranges of motors at different voltages. E.g., 1 HP @ 115V 1-Phase, 2 HP @ 230V 1-Phase, 3 HP @ 230V 3-Phase, 5 HP @ 460V 3-Phase.

• Enclosure Type:

• May be available with different enclosure options such as NEMA 1 (General Purpose), NEMA 4X (Watertight, Corrosion-Resistant), etc.

• Operating Mechanism:

• Toggle Switch or Push Button.

• Auxiliary Contacts:

• Some models may offer optional auxiliary contacts (NO/NC).

• Certifications:

• UL Listed, CSA Certified.

Product Advantages

• Simple and Reliable:

• Manual operation and simple construction ensure high reliability.

• Cost-Effective:

• Generally more economical than starters with built-in overload protection.

• Compact Design:

• Saves installation space.

• Versatile Applications:

• Can be used for controlling various small motors and resistive loads.

• Easy to Install:

• Wiring and installation are relatively straightforward.

Precautions

• No Built-in Overload Protection:

• This is the most important precaution. The A10CNO does NOT provide built-in magnetic overload protection. An external overload protection device (such as fuses, circuit breakers, or an external overload relay) MUST be used to protect the motor from overcurrent damage.

• Correct Rating Selection:

• Ensure that the voltage and current ratings of the selected starter match the motor and power supply being used.

• Follow Electrical Codes:

• Installation and wiring must comply with local and national electrical codes.

• Safe Operation:

• Operating personnel should be properly trained and follow safety procedures.

• Regular Inspection:

• Periodically inspect the starter for any signs of damage or wear.

Product Applications

• Control of Small Electric Motors:

• Fans

• Pumps

• Compressors

• Mixers

• Small Machine Tools

• Control of Resistive Loads:

• Heaters

• Lighting

• In Circuits with External Overload Protection:

• Used as a simple start/stop switch where overload protection is provided by other devices.

• Commercial and Industrial Applications:

• Various applications where motor reversing or complex control is not required.