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| Place of Origin: | Germany |
| Brand Name: | ABB |
| Certification: | COO & COC |
| Model Number: | CA4-10 |
CA4-10 ABB Thermal overload relay Provide reliable motor protection
ABB CA4-10 is a compact thermal overload relay in the ABB CA4 series, specifically designed to protect small three-phase asynchronous motors (rated current 0.1-10A) from overload and phase loss faults. This model is equipped with one normally open (NO) auxiliary contact and supports automatic reset function. It can be directly assembled with ABB A series contactors to form an integrated motor starting and protection unit. With high reliability, modular structure and international certification, it is widely used in industrial control cabinets, building automation systems and OEM equipment.
Typical application scenarios
Industrial automation
It is used for the starting, stopping and protection of medium-voltage motors, such as water pumps, fans, compressors and other equipment.
Power transmission and distribution
Load switching and protection in scenarios such as medium-voltage switch cabinets and substations.
Energy and infrastructure
Auxiliary control of photovoltaic inverters, pumping stations of water treatment plants, and backup power switching systems.
OEM equipment integration
As a standard component embedded in the OEM control cabinet, it enhances the reliability of the entire machine.
Basic parameters
| Model | CA4-10 |
| Series | ABB CA4 thermal overload relay |
| Rated operating current (Ie) | 0.1-10 A (AC- 3,400 V) |
| Rated insulation voltage (Ui) | 690 V AC |
| Rated operating voltage (Ue) 2 | 30/400/690 V AC (50/60 Hz) |
| Installation method | 35mm DIN rail or assembled on A-series contactors |
| Operating temperature range | -25°C to +55°C |
| Storage temperature | -40°C to +85°C |
| Altitude | ≤ 2000 m (no volume reduction) |
| Dimensions (width × height × depth) | 45mm × 90mm × 78mm |
Product Images
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