Overview
The E-T-A 3120-F323-P7T1-W12DB4 thermal circuit breaker is a compact, resettable protection device engineered for motors, transformers, and low-voltage electrical systems in industrial automation. This rocker-switch design combines overcurrent and thermal protection in a single unit, eliminating the need for separate components. The snap-in flange mounting and blade terminal configuration make it ideal for OEM equipment builders and field retrofit applications.
Key Features
- Rocker switch actuator for manual on/off operation and trip indication
- Thermal trip characteristic for reliable overload protection
- 2-pole configuration with two thermally protected poles
- Snap-in flange mounting with 9mm collar height
- Blade terminal connections for easy integration
- Resettable design—no cartridge replacement required after trip
- Suitable for both AC and DC applications
Technical Specifications
- Current Rating: 10A
- Voltage Rating: 250V AC / 50V DC
- Trip Type: Thermal
- Poles: 2
- Actuator Style: Rocker Switch
- Mounting: Flange-Mount Snap-In
- Frame Size: 50.5 × 21.5 mm mounting cutout
- Terminal Type: Blade
- Collar Height: 9 mm
Typical Applications
- Motor circuit protection in industrial machinery
- Transformer overload protection
- Control panel equipment protection
- Low-voltage switchgear assemblies
- Equipment OEM integration and field retrofit
Compatibility & Replacements
Compatible With
- Industrial control panels using snap-in breaker frames
- Equipment requiring 10A 250V AC or 50V DC protection
- Flange-mount DIN-rail or custom enclosure mounting
- Both single-phase and low-voltage DC systems
Replaces / Drop-In Replacement For
The 3120-F323-P7T1-W12DB4 is a specific model variant within the E-T-A 3120-F family. Other 3120-F models with different current ratings (e.g., 3120-F321, 3120-F311) use the same mechanical mounting interface but serve different amperage requirements. Verify exact model compatibility with your system integrator before ordering if replacing an existing unit.
Works With
- E-T-A circuit protection ecosystems (3120 series family)
- Standard industrial control enclosures
- Equipment commissioning and maintenance protocols
- AC and DC power distribution systems
