Gewiss residual current device 90 RCD 40A 4P 30 mA 4M GWD4122
Gewiss 90 RCD residual current device with the following characteristics:
- Number of Poles: 4P
- Rated current: 40 amperes
- Type: AC
- Rated voltage: 400/415V
- Rated differential current: 30 mA
- Number of Modules: 4
- Degree of Protection: IP20

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The residual current device is used to protect people, not systems. The moment the person goes to touch it, it creates a circuit with the ground. The current instead of staying in the household circuit, uses the human body to go to ground.
The residual current device is a device in your electrical system. It is capable of opening the circuit, that is, shutting off the power supply, the moment the current accidentally dissipates.
A residual current device offers protection in case of current leakage but not in case of overvoltage. Instead, the circuit breaker is required for this type of problem.
The AC-type residual current device works only with alternating current. Almost all systems for civil use fall into this type.
Characteristics:
- Number of poles: 4
- Number of modules: 4
- Rated current: 40A
- Rated differential current: 30 mA
- Type: AC
- Rated voltage: 400/415V
- Rated frequency: 50/60 Hz
- Isolation voltage: 500V
- Rated impulse withstand voltage: 4 kV
- Rated holding torque: 3 Nm
- Temperature: -25/+60 degrees
Data sheet
- Voltage: 400/415VAC
- Modules: 4
- Poles: 4P
- RCD Type: AC
- Differential current : 0.03A
- Amps: 40A
- Circuit Protections: Residual current devices