Overview
The Eaton Cutler-Hammer A10EN0 is a NEMA Size 3 AC magnetic motor starter from the Series A1 Citation line, engineered for dependable full-voltage starting and control of three-phase motors in industrial and commercial applications. This unit delivers 90A continuous current capacity at 600V AC, with 120V AC control coil, making it suitable for motors rated up to 50 horsepower at 460/575V. The A10EN0 combines proven electromagnetic design with straightforward installation, making it an ideal drop-in replacement for aging motor control systems.
Key Features
- 3-pole, 90A rated magnetic contactor for three-phase motor control
- NEMA Size 3 enclosure meets standard industrial protection and space requirements
- Full-voltage non-reversing (FVNR) starting eliminates soft-start complexity
- 120V AC (60 Hz) / 110V AC (50 Hz) control coil options for flexible installation
- Melting alloy overload relay for thermal motor protection built-in
- Series A1 design widely used in motor control centers, HVAC, and manufacturing equipment
Technical Specifications
- Model: A10EN0
- Manufacturer: Eaton Cutler-Hammer
- Series: Citation / A1
- NEMA Size: Size 3
- Poles: 3-pole
- Continuous Current Rating: 90A @ 600V AC
- Maximum Voltage: 600V AC, 3-phase
- Horsepower Rating: 50 HP @ 460/575V
- Control Coil Voltage: 120V AC 60 Hz (standard), 110V AC 50 Hz (optional)
- Starter Type: Full Voltage Non-Reversing (FVNR)
- Overload Protection: Melting alloy thermal overload relay
- Condition: Used, tested and fully functional
Typical Applications
The A10EN0 is commonly deployed in:
- Motor control centers (MCCs) for manufacturing and processing plants
- HVAC systems and air-handling units requiring reliable soft-start-free control
- Pump stations and fluid handling equipment with continuous-duty motors
- Conveyor systems and material handling operations
- Industrial ventilation and fan control
- Legacy system upgrades where NEMA Size 3 geometry is required
Compatibility & Replacements
Compatible With
- Eaton Cutler-Hammer motor control centers and NEMA-compliant enclosures
- Standard 600V AC three-phase power distribution systems
- 120V AC control circuits (60 Hz) and 110V AC (50 Hz) control power supplies
- IEC equivalent starters and overload relay kits designed for NEMA Size 3 mounting
- Standard magnetic contactor replacement kits and contact upgrades from Eaton
Replaces / Drop-In Replacement For
- Earlier Cutler-Hammer Series A1 NEMA Size 3 starters with similar coil and load specifications
- Other 90A 600V 3-phase starters requiring NEMA Size 3 form factor and mounting footprint
- Legacy Westinghouse and ITE NEMA Size 3 units with equivalent electrical ratings (verify mounting and auxiliary contact pinouts with your controls engineer)
Works With
- Eaton cutler-Hammer overload relay kits and thermal protection elements
- Standard auxiliary contact blocks and mechanical interlocks for NEMA Size 3 magnetic starters
- Manual and automatic transfer switches in industrial control systems
- 360Control and similar legacy motor management platforms that support NEMA-certified starters
- Any modern SCADA or PLC system via hardwired control inputs to the 120V coil circuit
