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Accessories
4.8 Residual current devices
● Monitoring:
The "MONITORING" LED indicates the operating mode of the RCD520B.
When the selection slide switch is set to "MONITORING", the "MONITORING" LED is lit
and the "ACT" LED flashes. RCD520B Basic functions purely as a display unit without a
tripping function.
LED displays
430
3VA molded case circuit breakers with IEC certificate
Manual, 03/2019, A5E03603177010-03
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