Overview
The Eaton Cutler-Hammer ECN0511AAA is a Freedom series enclosed motor starter designed for reliable, industrial-grade motor control. This NEMA Size 1 unit features a 120V coil (110 VAC 50 Hz, 120 VAC 60 Hz) and 27A load capacity in a NEMA 1 metal enclosure. Built for non-reversing, single-phase and three-phase applications, the ECN0511AAA provides pre-wired contactor and thermal overload relay protection, simplifying installation for maintenance technicians and system integrators.
Key Features
- NEMA Size 1 enclosed starter with NEMA 1 metal enclosure for environmental protection
- Non-reversing, non-combination design with 3-pole contactor configuration
- Integrated thermal overload relay for motor protection
- 120V control coil (110 VAC 50 Hz / 120 VAC 60 Hz) with manual thermal overload reset
- Supports single-phase and three-phase motor loads
- Pre-wired and ready for drop-in installation—heaters ordered separately
Technical Specifications
- Part Number: ECN0511AAA
- Manufacturer: Eaton / Cutler-Hammer
- Series: Freedom NEMA Motor Control Starters
- NEMA Rating: NEMA 1 (indoor, non-hazardous)
- Starter Size: Size 1
- Starter Type: Non-Reversing, Non-Combination
- Coil Voltage: 110 VAC 50 Hz / 120 VAC 60 Hz
- Load Current Rating: 27A
- Poles: 3-Pole
- Phase Support: Single Phase, Three Phase
- Enclosure: Metal, NEMA 1
- Thermal Overload: Integrated (heaters sold separately)
- Dimensions (Shipping): 14″ L × 10″ H × 8″ W
- Weight: 9.8 lbs
- Warranty: Limited one-year manufacturer warranty
Typical Applications
- Small motor control circuits (1–5 HP range typical for Size 1 starters)
- HVAC compressor and pump motor starters
- Industrial machine tool motor control
- Commercial and light industrial automation systems
- OEM panel and enclosure integration
- Maintenance and retrofit installations in existing control cabinets
Compatibility & Replacements
Compatible With
- Eaton / Cutler-Hammer control enclosures and panels
- Standard 110–120 VAC control circuits and auxiliary relays
- 3-phase and single-phase motor loads up to Size 1 capacity
- NEMA 1 indoor industrial environments
- Thermal overload heaters designed for NEMA Size 1 starters (ordered separately)
Replaces / Drop-In Replacement For
- Older Cutler-Hammer ECN series Size 1 starters with 120V coils
- Legacy motor starter units in industrial retrofit applications
- Similar NEMA Size 1 enclosed non-reversing starters from Cutler-Hammer predecessor models
Works With
- Standard 3-phase and single-phase AC motor circuits
- Manual motor starter control pushbuttons and selector switches
- Auxiliary control relay networks and interlocking circuits
- Thermal overload relay heater elements (NEMA Size 1 compatible)
- NEMA 1 control enclosure mounting and DIN rail systems
