
D00038_IR423-D4_06_M_DEEN.pdf/01.2024 11
ISOMETER® IR423-D4
Displays, memory
Display ............................ LC display, multi-functional, non-illuminated
Display range, measured value .........................................1 kΩ…1 MΩ
Operating uncertainty 1…5 kΩ............................................ ± 0.5 kΩ
5 kΩ…1 MΩ...........................................± 15 %
Password .....................................................................off/0…999 (off)*
Fault memory, alarm relay....................................................on/off (off)*
Inputs
Cable length test and reset button................................................≤ 10 m
Switching elements
Number of switching elements ................ 2 (changeover contact K1, K2)
Operating principle........................N/C / N/O operation (N/O operation)*
Electrical service life, number of cycles ..........................................10000
Contact data acc. to IEC 60947-5-1
Utilisation category......................AC-13 / AC-14 / DC-12 / DC-12 / DC-12
Rated operational voltage..................230 V / 230V / 220 V / 110V / 24V
Rated operational current............................ 5 A / 3 A / 0.1 A / 0.2 A / 1 A
Minimum contact rating........................................1 mA at AC/DC ≥ 10 V
Environment/EMC
EMC.................................................................................... IEC 61326-2-4
Operating temperature.......................................................-25…+55 °C
Operating temperature option "W" ....................................-40…+70 °C
Climatic class acc. to IEC 60721
Stationary use (IEC 60721-3-3).........................................................3K22
Stationary use (IEC 60721-3-3) option "W" ......................................3K23
Transport (IEC 60721-3-2) ................................................................2K11
Long-time storage (IEC 60721-3-1)..................................................1K22
Classification of mechanical conditions IEC 60721
Stationary use (IEC 60721-3-3)........................................................3M11
Stationary use (IEC 60721-3-3) option "W" .....................................3M12
Transport (IEC 60721-3-2) .................................................................2M4
Long-time storage (IEC 60721-3-1).................................................1M12
Connection
Connection type ...................screw-type terminal or push-wire terminal
Connection...................................................................... screw terminals
Connection properties
rigid ............................................................0.2…4 mm2(AWG 24-12)
flexible .....................................................0.2…2.5 mm2(AWG 24-14)
Two conductors with the same cross section
rigid/flexible ............................................0.2…1.5 mm2(AWG 24-16)
Stripping length ............................................................................. 8 mm
Tightening torque, terminal screws ...................................0.5…0.6 Nm
Connection............................................................... push-wire terminals
Connection properties
rigid ........................................................0.2…2.5 mm2 (AWG 24-14)
flexible
without ferrules ................................0.75…2.5 mm2 (AWG 19-14)
with ferrules .......................................0.2…1.5 mm2 (AWG 24-16)
Stripping length ........................................................................... 10 mm
Opening force ................................................................................... 50 N
Test opening, diameter ............................................................... 2.1 mm
Anzeigen, Speicher
Anzeige ................................. LC-Display, multifunktional, unbeleuchtet
Anzeigebereich Messwert..................................................1 kΩ…1 MΩ
Betriebsmessabweichung bei 1…5 kΩ..................................±0,5 kΩ
bei 5 kΩ…1 MΩ............................. /±15 %
Passwort......................................................................off/0…999 (off)*
Fehlerspeicher (Alarmrelais)................................................. on/off (off)*
Eingänge
Leitungslänge externe Test- und Reset-Taste...............................≤ 10 m
Schaltglieder
Schaltglieder..............................................................2 (Wechsler K1, K2)
Arbeitsweise ............................Ruhestrom/Arbeitsstrom (Arbeitsstrom)*
Elektrische Lebensdauer ............................................10000 Schaltspiele
Kontaktdaten nach IEC 60947-5-1
Gebrauchskategorie.....................AC-13 / AC-14 / DC-12 / DC-12 / DC-12
Bemessungsbetriebsspannung.........230 V / 230 V / 220 V / 110 V / 24 V
Bemessungsbetriebsstrom........................... 5 A / 3 A / 0,1 A / 0,2 A / 1 A
Minimale Kontaktbelastbarkeit ...........................1 mA bei AC/DC ≥ 10 V
Umwelt/EMV
EMV ................................................................................... IEC 61326-2-4
Arbeitstemperatur ..............................................................-25…+55 °C
Arbeitstemperatur Option "W" ...........................................-40…+70 °C
Klimaklassen nach IEC 60721
Ortsfester Einsatz (IEC 60721-3-3)....................................................3K22
Ortsfester Einsatz (IEC 60721-3-3) Option "W".................................3K23
Transport (IEC 60721-3-2) ................................................................2K11
Langzeitlagerung (IEC 60721-3-1)....................................................1K22
Mechanische Beanspruchung nach IEC 60721
Ortsfester Einsatz (IEC 60721-3-3)...................................................3M11
Ortsfester Einsatz (IEC 60721-3-3) Option "W"................................3M12
Transport (IEC 60721-3-2) .................................................................2M4
Langzeitlagerung (IEC 60721-3-1)...................................................1M12
Anschluss
Anschlussart ................................................Schraub- oder Federklemme
Anschlus .......................................................................Schraubklemmen
Anschlussvermögen:
starr.............................................................0,2…4 mm2(AWG 24-12)
flexibel .....................................................0,2…2,5 mm2(AWG 24-14)
Mehrleiteranschluss (2 Leiter gleichen Querschnitts):
starr/flexibel ............................................0,2…1,5 mm2 (AWG 24-16)
Abisolierlänge................................................................................. 8 mm
Anzugsdrehmoment ..........................................................0,5…0,6 Nm
Anschluss............................................................................Federklemme
Anschlussvermögen:
starr ........................................................ 0,2…2,5 mm² (AWG 24-14)
flexibel
ohne Aderendhülse ........................... 0,75…2,5 mm² (AWG 19-14)
mit Aderendhülse ............................... 0,2…1,5 mm² (AWG 24-16)
Abisolierlänge .............................................................................. 10 mm
Öffnungskraft ................................................................................... 50 N
Testöffnung, Durchmesser .......................................................... 2,1 mm