Differential relay 230-400 v rd2

Differential Relay RD2 – 230/400 V

The RD2 differential relay is an electronic protection device for the detection of earth leakage currents . Used in combination with an external toroidal transformer , it allows rapid and precise action for the safety of electrical systems , both civil and industrial.

Technical features:

• Supply voltage : 230–400 V AC

• Nominal frequency : 50/60 Hz

• Differential current adjustment range (IΔn) : from 0.03 A to 2 A

• Adjustable response time (tΔ) : from 50 ms up to 5 seconds

• Output contact : 1 changeover contact (10 A / 250 V AC)

• Installation : on 35mm DIN rail

• Module : 2 DIN modules

• Connection to the toroid : via terminals

• Compatible with separate toroidal transformers

• Regulatory compliance : CEI EN 62020

• Operating temperature : -10°C to +50°C

Operation:

The RD2 relay monitors the differential current through the connected toroid:

• When the dispersion exceeds the set value (IΔn),

• after the selected time (tΔ),

• The relay closes or opens the output contact , allowing the intervention of an external switching device (e.g. contactor or switch).

Applications:

• Protection of power lines and machinery from earth faults

• Safety monitoring in industrial and tertiary plants

• Ideal in contexts where sensitivity and intervention time adjustment are required

• Can be used with single-phase or three-phase systems

Advantages:

• Quick and easy installation on DIN rail

• High precision and reliability

• Flexible current and tripping time adjustments

• Suitable for integration into new or existing electrical panels