Residual current monitor for monitoring AC and (pulsed) DC currents

LINETRAXX® RCMA420 Residual current monitor for monitoring AC and (pulsed) DC currents IAn = 10...500 mA in TN and TT systems Device features • AC/DC sensitive residual current monitor Type B according to IEC 62020 and IEC 60755 • Two separately adjustable response ranges (prewarning, alarm) • Adjustable switching hysteresis • Starting delay, response delay and delay on release • Measured value display via multifunctional LC display • Alarm indication via LEDs (AL1, AL2) and changeover contacts (K1, K2) • N/C operation or N/O operation selectable • Password protection against unauthorized parameter...

Connect the device according the wiring diagram. Observe the manuals of the respective measuring current transformer. Connection of measuring current transformers Connection to the RCMA420 residual current monitor using the CTX-... connecting cable. Colour coding for CTX...: k = yellow, l = green, -12 V = black, GND = brown, +12 V = red, Test (T) = orange

Insulation coordination acc. to IEC 60664-1/IEC 60664-3 Specified time RCMA42x-D-1 Rated insulation voltage 100 V Overvoltage category/pollution degree 111/3 Rated impulse voltage 2.5 kV Rated insulation voltage 250 V Overvoltage category/pollution degree MI/3 Rated impulse voltage 4 kV Supply voltage Starting delay t Response delay ton1 (prewarning) Response delay ton2 (main alarm) Delay on release toff °perating time tae at /4n = 1 x /4n1/2 Operating time tae at /4n = 5 x /4n1/2 Response time tan Recovery time tb Number of reload cycles Supply voltage range Us Operating range Us Frequency rangeUs...

Environment/EMC EMC Operating temperature Classification of climatic conditions IEC 60721 (except condensation and formation of ice) Stationary use (IEC 60721-3-3) Transportation (IEC 60721-3-2) Storage (IEC 60721-3-1) Classification of mechanical conditions acc. to IEC 60721 Stationary use (IEC 60721-3-3) Transportation (IEC 60721-3-2) Storage (IEC 60721-3-1) Connection For UL applications: Use 60/70 °C copper conductors only! Connection type screw-type terminals Connection properties 0.2…4 / 0.2…2.5 mm2 rigid/flexible (AWG 24…12) multi-conductor connection (2 conductors 0,2…1,5 / 0,2…1,5 mm2...

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