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Eaton Freedom NEMA Overload Relay, Three-Pole, Panel Mounted
The Eaton Freedom NEMA overload relay is a three-pole, panel-mounted device engineered to protect three-phase motor circuits from sustained overload conditions. Built on Eaton's Freedom NEMA platform with dual NEMA and IEC design compatibility, this relay uses a thermal trip mechanism to sense excess current draw and interrupt the circuit before motor windings are damaged. It is available in a range of amperage ratings and requires heaters (sold separately, matched to actual motor full-load amperage) to deliver accurate thermal protection. Designed for integration into industrial control panels and motor starter assemblies, this overload relay supports reliable, code-compliant motor circuit protection for commercial and industrial applications.
Key Features
- Amperage Options: Available in multiple amperage ratings for light-duty through heavy-duty three-phase motor overload protection.
- Three-Pole Configuration: Three-pole design matches standard three-phase motor circuits for balanced overload sensing on all legs.
- Panel Mounted: Panel mounting simplifies integration into motor control centers and industrial control panel assemblies.
- Thermal Trip Mechanism: Thermal trip type provides dependable, temperature-based overload detection to help prevent motor burnout.
- NEMA and IEC Design: Dual NEMA, IEC design standard supports flexible specification across both NEMA-style and IEC-style motor control systems.
- Heaters Required: Special feature note confirms heaters are required and must be selected to match actual motor load for correct thermal response.
- Freedom NEMA Platform: Part of Eaton's established Freedom NEMA line of motor control and protection components.
Technical Specifications
- Number Of Poles: Three-pole
- Type: Freedom NEMA
- Mounting: Panel
- Trip Type: Thermal
- Design: NEMA, IEC
- Special Features: Heaters required
- Product Type: Overload Relay
Typical Applications
- Three-Phase Motor Overload Protection
- Industrial Motor Control Panels
- NEMA and IEC Motor Starter Assemblies
- Panel-Mounted Control System Integration
- Commercial and Industrial Electrical Installations
Why Eaton?
Eaton's Freedom NEMA overload relays combine thermal trip protection with dual NEMA and IEC design flexibility, giving electrical professionals a dependable option for three-phase motor circuit protection. The three-pole, panel-mounted construction is built for straightforward integration into motor control panels, while the heater-based thermal sensing approach allows precise matching to actual motor load. Choose Eaton for motor control and protection components built for reliable, code-compliant industrial performance.
Variant Specifications
| Amperage | Model | Frame | SKU |
|---|---|---|---|
| 20-39A | C306DN3B | Standard | C306DN3B |
| Multiple (C306NN3 / C306KN3 / C306GN3B) | Standard | NEMA Size 1, 2, IEC Size G-K | C306GN3B |
| Multiple (C306NN3 / C306KN3 / C306GN3B) | Standard | NEMA Size 3, IEC Size L-M | C306KN3 |
| Multiple (C306NN3 / C306KN3 / C306GN3B) | Standard | NEMA Size 4, IEC Size N | C306NN3 |
Manufacturer Resources
Product Specs
- Special features:
- Heaters required
- Department:
- Electrical
- Number Of Poles:
- Three-pole
- Product Type:
- Overload Relay
- Trip Type:
- Thermal
- Product Design:
- NEMA, IEC
- Product Group:
- Relays