The Hager CFC440H is an AC leakage relay designed for residual current monitoring in low-voltage electrical distribution systems. It detects earth leakage currents and provides a switching output when the residual current exceeds the preset threshold.
Key technical parameters:
- Rated residual operating current: 300 mA
- Number of poles: 4
- Rated current per pole: 40 A
- Product type: AC leakage relay
This relay is intended for use in industrial and commercial installations where protection against earth leakage is required. The four-pole configuration allows monitoring of three-phase circuits with neutral, supporting comprehensive protection. The 300 mA sensitivity is suitable for applications where a higher threshold is needed to reduce nuisance tripping while maintaining safety. The relay operates on AC systems and is specifically designed for residual current detection in low-voltage networks.
The device is suitable for integration into distribution boards and control panels as part of a coordinated protection scheme. It can be used together with circuit breakers or contactors to disconnect faulty circuits when leakage current is detected.
The Hager CFC440H is identified by manufacturer part number CFC440H and EAN code 3250611613817. Hager is a recognised manufacturer of electrical distribution and protection equipment, ensuring product quality and availability through authorised distributors.
Technical Specifications
| Rated residual operating current | 300 mA | Number of poles | 4 |
|---|---|---|---|
| Rated current | 40 A |
Product Supply
We supply original Hager products through established international sourcing channels. Product availability, production status, packaging condition and country of origin may vary by stock source.
For current stock, batch information, photos and lead time, please contact our sales team before ordering.





