
Best selling Residual-current devices
Here's a ranking of the best products in this category. To give you a quick overview, we've also added some key information about the products.
1. Steffen FI adapter
With the versatile FI plug (available optionally) and the mobile FI adapter, you are safely protected. These residual current devices detect alternating and pulsating direct currents and compare the incoming and outgoing currents. If there is a deviation of more than 30 mA, the supply line is disconnected from the network within milliseconds. The FI devices prevent life-threatening electric shocks that can occur due to faults in wiring and equipment. They are ideal for use with electric garden tools, Christmas lighting, workshop tasks, and more. High cold tolerance down to -25 °C, with undervoltage release.

2. Hager FI/LS switch
Residual current circuit breaker according to DIN EN 61009-1 (VDE 0664-20) with QuickConnect terminal, up to 20 A at the feeder and up to 63 A at the feeder, blue test button and residual current indication. Simple individual removal from the phase busbar system. Suitable for retrofitting of additional equipment. Labeling option directly on the device.

3. Hager FI/LS 4Pol. 3P+N 20A/30mA
The Hager FI/LS 4Pol. 3P+N 20A/30mA is a combined residual current and overload protection switch that offers protection against both overload and fault currents. With a rated voltage of 400 V and a tripping characteristic of class C, this device is ideal for applications that require robust and reliable protection. The switch is designed for mounting on a DIN rail and features a compact design that allows for easy installation. A test button and a fault current indicator through a blue display window provide additional safety and user-friendliness. The FI/LS switch is suitable for use in various electrical systems and offers a high rated insulation voltage of 500 V, making it a versatile choice for different applications.
- Combined protection switch for overload and fault currents
- Test button for easy functionality check
- Fault current indication through blue display window
- Mounting on DIN35 rail for easy installation
- High rated insulation voltage of 500 V.

4. Hager FI/LS 4Pol. 3P+N 32A/30mA
The combined residual current circuit breaker from Hager, model FI/LS 4Pol. 3P+N 32A/30mA, offers a reliable solution for protecting electrical installations. With a tripping characteristic of class C, this breaker is ideal for applications that require a slow response to overload currents. The breaker is designed for mounting on a DIN rail and features a compact design that allows for easy installation. A test button and a residual current indicator through a blue display window provide additional safety and user-friendliness. The breaker is rated for a nominal voltage of 400 V and offers a rated current of 32 A, making it a robust choice for various electrical systems.
- Combination of residual current and circuit breaker
- Test button for easy functionality check
- Residual current indication through blue display window
- Suitable for mounting on DIN35 rail
- Protection class IPX2 for additional moisture protection.

5. Eaton FI/LS combination, 16 A, 300 mA, LS- 120668
The FI/LS combination from Eaton is a reliable and safe protective switch designed for both personal safety and machine and insulation protection. With a rated current of 16 A and a rated residual current of 300 mA, this device offers an effective solution for residential and commercial buildings. The combination of residual current and circuit breakers allows for compact installation on a DIN35 rail and is equipped with a test button and a tripping indicator to verify functionality. The delayed characteristic "C" ensures that the switch does not trip during short-term overloads, making it ideal for applications with high inrush currents. The installation is straightforward and user-friendly, facilitating the work for professionals.
- Combined residual current and circuit breaker for comprehensive protection
- Test button and tripping indicator for easy functionality check
- Delayed tripping characteristic "C" for high inrush currents
- Suitable for installation on DIN35 rail
- Protection class IP20 for indoor use.

6. Noark Electric FI/LS 1P+N 6kA 13A 30mA Type A
The residual current circuit breaker with overcurrent protection is suitable for both household and industrial applications. It is based on the combination of a residual current circuit breaker with an electromagnetic principle and a protective switch with a thermal overload release and a magnetic short-circuit release. The advantage is the voltage-independent operation of the residual current protective device. A sufficient voltage is only required when testing the RCD using the test button. Magnetic RCBOs should be tested regularly within a month.

7. Schneider Electric Ground fault circuit interrupter
The residual current circuit breaker from Schneider Electric is a highly advanced residual current device specifically designed for use in electric charging stations. With a rated current of 40 A and a rated residual current of 30 mA, this 4-pole switch provides reliable protection against electrical faults. It is designed for an operating voltage of 400 V and meets the requirements for use in alternating current applications. The switch is equipped with a mechanical fault indication that ensures clear visibility of tripping due to fault currents. Additionally, it offers a safe contact indication that signals voltage-free status on the outgoing side. The residual current circuit breaker is suitable for mounting on a DIN rail and is characterized by high short-circuit strength, making it a robust choice for various applications.
- All-current sensitive residual current device for electric charging stations
- Mechanical fault indication for displaying tripping events
- Safe contact indication for voltage-free status
- Suitable for DIN rail mounting
- High short-circuit strength of 10 kA.

8. Hager RCD 3P+N 63A/30mA
The Hager 3P+N 63A/30mA RCD is a highly advanced residual current device designed for use in electrical installations. It provides reliable protection against leakage currents that can arise from insulation faults or other electrical disturbances. With a rated current of 63 amperes and a sensitivity of 30 milliamperes, this switch is ideal for personal protection in residential and commercial buildings. Installation is straightforward on a DIN35 rail, allowing for flexible setup. The switch features a yellow display window for leakage current indication and a test button to regularly check its functionality. The trip characteristic A ensures that the switch reacts quickly to certain leakage currents, safeguarding the electrical system.
- Snap-on mounting on DIN35 rail for easy installation
- Leakage current indication via yellow display window
- Test button for regular functionality checks
- Trip characteristic A for quick response to leakage currents
- Protection class IP20, suitable for indoor use.

9. Eaton RCD switch, 63A, 4p, 300mA, type S/A 235472
The Eaton RCD is a highly advanced residual current device designed for use in electrical installations. With a rated current of 63 A and a selective design, it provides reliable protection for both people and machines. The switch is suitable for mounting on a DIN35 rail and features a compact design with a width of only 4 mm. The integrated test button allows for easy functionality checks. The device is designed for personal protection with a tripping current of 30 mA, as well as for machine and insulation protection with 300 mA. A special feature is its inverter-resistant design, which prevents unwanted tripping in conjunction with frequency converters and speed-controlled drives. These characteristics make the Eaton RCD an ideal choice for demanding applications in electrical engineering.
- Selective design allows for use with multiple RCDs with a 30 mA tripping current
- Inverter-resistant design prevents unwanted tripping with frequency converters
- Easy mounting on DIN35 rail with snap fastening
- Integrated test button for functionality checks.

10. Eaton RCD, 80A, 4p, 30mA, type A 235447
The Eaton RCD is a highly advanced residual current device designed for use in electrical installations. With a rated current of 80 A and a four-pole design, it provides reliable protection against electrical fault currents. The switch is equipped with a test button that allows for easy functionality checks. It can detect fault currents of 30 mA, making it ideal for personal protection. Additionally, the switch features a selective design that allows for the pre-installation of multiple RCDs with a 30 mA trip current, enhancing safety in complex installations. The inverter-resistant design ensures that unwanted tripping in conjunction with frequency converters and speed-controlled drives is avoided, increasing reliability in industrial applications. Therefore, the Eaton RCD is an excellent choice for anyone who values safety and efficiency in their electrical systems.
- Snap-on mounting on DIN35 rail for easy installation
- Inverter-resistant design to prevent unwanted tripping
- Selective design allows for the use of multiple RCDs
- Test button for easy functionality check.
