Products 
Residual current monitoring RCM Residual current monitors RCM for alternating currents and DC currents
Residual current monitors RCM for alternating currents and DC currents
(Type A according to IEC 60755)
| RCM420 | |
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The AC and pulsed DC sensitive residual current monitor RCM420-D (Type A) is designed for fault and residual current monitoring in earthed power supply systems (TN and TT systems) where an alarm is to be activated in the event of a fault, but disconnection must be prevented. |
| RCM470LY | |
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The residual current monitor RCM470LY is designed for fault and residual current monitoring in earthed power supply systems (TN and TT systems) where an alarm is to be activated in the event of a fault, but disconnection must be prevented. In addition, the device can be used to monitor single conductors, such as PE conductors, N-PE connections and PE-PAS connections. |
| RCM475LY | |
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The residual current monitor RCM475LY is designed for fault and residual current monitoring in earthed power supply systems (TN and TT systems) where an alarm is to be activated in the event of a fault, but disconnection must be prevented. In addition, the device can be used to monitor single conductors, such as PE conductors, N-PE connections and PE-PAS connections. |
| RCM475YM2 | |
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The residual current monitor RCM475YM2 is designed for fault and residual current monitoring in earthed power supply systems (TN and TT systems) where an alarm is to be activated in the event of a fault, but disconnection must be prevented. Two separately adjustable response values and alarm relays allow to distinguish between prewarning and alarm. Since the values are measured with measuring current transformers, the device is nearly independent of the load current and the nominal voltage of the system. |
