Circuit arrangement for switching a load current circuit in fail-safe technology, said circuit arrangement comprising: at least one electromagnetic relay with a controlled switch, which in the active state of the relay takes its closed working position and, in so doing, is located in the load current circuit, while in the idle state of the relay the switch takes an open idle position with respect to the load current circuit, at least one monitoring circuit, which comprises: a switch position indicator circuit, which includes an auxiliary voltage source and current detecting means and in the idle state of the relay allows the current detection means to respond, an evaluation circuit, which compares the response of the current detection means with the command input "on" or "off" to the relay and from the comparison derives the state of the circuit arrangement "faultless" or "defective", wherein in the faultless idle state the relay de-energizes the load current circuit and energizes the indicator circuit, wherein in the faultless active state the relay energizes the load current circuit and de-energizes the indicator circuit, wherein when the load current circuit is disconnected, a fault state "hanging contacts" can be detected by means of the discrepancy between the command input to the relay and the response state of the current detection means, wherein when the load current circuit is connected up, a fault state "three point contact bridge" becomes apparent due to the discrepancy between the command input to the relay and the partially persisting response state of the current detection means, and wherein during the ongoing operations a fault state "two point contact bridge" can be detected by means of the discrepancy between the command input to the relay and an incorrect response state of the current detection means. at least one electromagnetic relay with a controlled switch, which in the active state of the relay takes its closed working position and, in so doing, is located in the load current circuit, while in the idle state of the relay the switch takes an open idle position with respect to the load current circuit, at least one monitoring circuit, which comprises: a switch position indicator circuit, which includes an auxiliary voltage source and current detecting means and in the idle state of the relay allows the current detection means to respond, an evaluation circuit, which compares the response of the current detection means with the command input "on" or "off" to the relay and from the comparison derives the state of the circuit arrangement "faultless" or "defective", wherein in the faultless idle state the relay de-energizes the load current circuit and energizes the indicator circuit, wherein in the faultless active state the relay energizes the load current circuit and de-energizes the indicator circuit, wherein when the load current circuit is disconnected, a fault state "hanging contacts" can be detected by means of the discrepancy between the command input to the relay and the response state of the current detection means, wherein when the load current circuit is connected up, a fault state "three point contact bridge" becomes apparent due to the discrepancy between the command input to the relay and the partially persisting response state of the current detection means, and wherein during the ongoing operations a fault state "two point contact bridge" can be detected by means of the discrepancy between the command input to the relay and an incorrect response state of the current detection means. a switch position indicator circuit, which includes an auxiliary voltage source and current detecting means and in the idle state of the relay allows the current detection means to respond, an evaluation circuit, which compares the response of the current detection means with the command input "on" or "off" to the relay and from the comparison derives the state of the circuit arrangement "faultless" or "defective", wherein in the faultless idle state the relay de-energizes the load current circuit and energizes the indicator circuit, wherein in the faultless active state the relay energizes the load current circuit and de-energizes the indicator circuit, wherein when the load current circuit is disconnected, a fault state "hanging contacts" can be detected by means of the discrepancy between the command input to the relay and the response state of the current detection means, wherein when the load current circuit is connected up, a fault state "three point contact bridge" becomes apparent due to the discrepancy between the command input to the relay and the partially persisting response state of the current detection means, and wherein during the ongoing operations a fault state "two point contact bridge" can be detected by means of the discrepancy between the command input to the relay and an incorrect response state of the current detection means.