
Differenzstrom-Überwachungsgeräte (auch Differenzstromwächter) werden zur Überwachung von geerdeten Netzen (TN- und TT-Systeme) auf Fehlerströme oder Differenzströme eingesetzt. Gemessen wird die Summe der Ströme aller Leiter außer dem Schutzleiter mit Hilfe von Messstromwandlern.
In der Regel werden Differenzstrom-Überwachungsgeräte (Abkürzung RCM, Residual Current Monitor) dazu verwendet, noch vor dem Erreichen der Abschaltschwelle eines RCD dem Anwender eine Meldung zu geben. Differenzstrom-Überwachungsgeräte erkennen Verschlechterungen des Isolationsniveaus frühzeitig und sicher.
21 Products found

Digital service entrance ground-fault relay

Four-channel DC, AC and pulse current sensitive residual current monitors for earthed AC, AC/DC and DC systems

AC/DC sensitive modular residual current device for MRCD applications

Single-channel AC and pulsed DC sensitive modular residual current device for AC systems

Single-channel AC and pulsed DC sensitive residual current monitor for AC systems

AC/DC sensitive residual current monitoring modules for monitoring applications

Multi-channel AC/DC ground-fault monitor

Multi-channel AC/DC ground-fault monitor with individual relay outputs

AC/DC sensitive ground-fault monitor (type B) with 6 integrated measuring current transformers

AC/DC sensitive residual current monitoring module with integrated split-core measuring current transformer

Modular residual current device type B for additional protection (protection against indirect contact) in earthed systems (TN and TT systems)
![[Translate to North American English:] RCMA423](/fileadmin/_processed_/a/d/csm_RCMA423_01_WEB_2dc3226c4f.jpg)
AC/DC ground-fault monitor

AC/DC ground-fault monitor
![[Translate to North American English:] RCM420 RCM420](/fileadmin/_processed_/5/3/csm_RCM420_01_WEB_70dba9c027.jpg)
AC ground-fault monitor

AC/DC sensitive residual current monitoring module for electric vehicle charging systems

DC sensitive residual current monitoring module for electric vehicle charging systems

AC/DC sensitive residual current monitoring for AC charge stations

AC/DC sensitive residual current monitoring for AC charge stations

DC sensitive residual current monitoring for AC charge stations

AC/DC sensitive residual current monitoring module for measuring AC and DC currents up to ±100 mA

Digital service entrance ground-fault relay

Four-channel DC, AC and pulse current sensitive residual current monitors for earthed AC, AC/DC and DC systems

AC/DC sensitive modular residual current device for MRCD applications

Single-channel AC and pulsed DC sensitive modular residual current device for AC systems

Single-channel AC and pulsed DC sensitive residual current monitor for AC systems

AC/DC sensitive residual current monitoring modules for monitoring applications

Multi-channel AC/DC ground-fault monitor

Multi-channel AC/DC ground-fault monitor with individual relay outputs

AC/DC sensitive ground-fault monitor (type B) with 6 integrated measuring current transformers

AC/DC sensitive residual current monitoring module with integrated split-core measuring current transformer

Modular residual current device type B for additional protection (protection against indirect contact) in earthed systems (TN and TT systems)
![[Translate to North American English:] RCMA423](/fileadmin/_processed_/a/d/csm_RCMA423_01_WEB_2dc3226c4f.jpg)
AC/DC ground-fault monitor

AC/DC ground-fault monitor
![[Translate to North American English:] RCM420 RCM420](/fileadmin/_processed_/5/3/csm_RCM420_01_WEB_70dba9c027.jpg)
AC ground-fault monitor

AC/DC sensitive residual current monitoring module for electric vehicle charging systems

DC sensitive residual current monitoring module for electric vehicle charging systems

AC/DC sensitive residual current monitoring for AC charge stations

AC/DC sensitive residual current monitoring for AC charge stations

DC sensitive residual current monitoring for AC charge stations

AC/DC sensitive residual current monitoring module for measuring AC and DC currents up to ±100 mA
