RCM470LY-13A Bender

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.

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. The device can

also be used for busbar systems.

• External measuring current transformer

• Response values adjustable

10 mA…10 A/100 A 40…400 Hz

• Response delay, adjustable 0…10 s

• Alarm relay with two potential-free

changeover contacts

• N/O or N/C operation, selectable

• Fault memory behaviour, selectable

• Combined test/reset button

• Connection external test and reset button

• LED bar graph indicator IΔn 0…100 %

• Connection external measuring instrument

IΔn 0…100 %

• CT connection monitoring

• Sealable transparent cover

• External supply voltage

• Type A acc. to IEC/TR 60755

• Residual current monitoring in earthed two, three or four conductor systems (TN and

TT systems)

• Current monitoring of single conductors de-energised under normal conditions

• Socket-outlet circuits for devices which are operated unattended for a long time and

which may not fail

• Alarm systems, safety devices

• Air conditioning systems, EDP systems

• Cooling equipment with valuable frozen goods

• Canteen kitchens

• Monitoring of earthed power supplies for stray currents, impact on N conductors

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