Overview
The Furnas Electric 48EC38AA6 is an ambient compensated bi-metal thermal overload relay engineered for reliable three-phase motor protection. As a Class 16 device, this 3-pole relay is designed for use on three-phase starters and provides dependable overload detection through bi-metal strip technology. The ambient compensation feature ensures consistent protection across varying temperature conditions, making it suitable for both industrial and commercial motor control applications.
Key Features
- Bi-metal thermal element for reliable overload detection
- Ambient temperature compensated design for consistent performance
- Field-adjustable trip current (within ±15% of rated value)
- Three-pole configuration for three-phase motor protection
- Designed for Class 16 starter mounting
- Shrouded coil design for enhanced durability in demanding environments
Technical Specifications
The 48EC38AA6 incorporates time-delay thermal protection technology with independent bi-metal calibration on each pole for balanced load response. The relay features adjustable trip setpoints to accommodate field installation requirements, and the shrouded coil design provides improved corrosion resistance and reduces contamination-related failures.
Typical Applications
- Three-phase motor overload protection
- Industrial machine control systems
- Commercial HVAC and pump applications
- Class 16 NEMA starter integration
- Outdoor and humid environment installations
Compatibility & Replacements
Compatible With
- Furnas/Siemens Class 16 motor starters
- Three-phase 460V/600V motor control systems
- Thermal overload relay sockets designed for 48-series relays
- Standard NEMA motor starter enclosures
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. Common similar models in the Furnas 48E-series class include 48EC38A, 48EC38AA2, and other ambient compensated variants. Always confirm exact model and current rating match before replacement.
Works With
- Furnas NEMA Class 16 starters and contactors
- Three-phase motor protection circuits
- Manual and magnetic motor starters
- Standard 600VAC industrial control systems
