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It is possible to switch between the two operating modes at all times, irrespective of whether
the RCD520B residual current device is operating in a running application. Proper
functioning of the selection switch is continuously monitored. In the event of a malfunction,
the device automatically switches to RCD mode internally, thereby excluding the possibility
of a safety-related risk.
Overview of selection settings in conjunction with I
Note: If I
= 0.03 A, the circuit breaker trips instantaneously irrespective of the setting of Δt.
1)
Δn
Note
Observe the operating instructions.
Functional testing must be performed before the residual current device is put into operation.
3VA molded case circuit breakers with IEC certificate
Manual, 03/2019, A5E03603177010-03
4.8 Residual current devices
:
Δn
Accessories
439
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