• According to IEC/EN 61 557
• For DC voltage systems up to 12 ... 280 V
• Wide voltage range of measuring input U_N DC 12 ... 280 V
  ( on request DC 24 ... 500V with  sepatate auxillary supply,
  Measuring range 20 ... 500 kΩ )
• Adjustable tripping value R_AL of 5 ... 200 kΩ
• Selective ground fault indication for L+and  L- allows fast fault finding
• Without auxiliary supply
• DE-energised on trip
• 2 changeover contacts
• Automatic or manual reset, programmable
• With  test and reset buttons
• Connection for external test and reset button possible
• galvanic separated AC or DC auxiliary supply available as option
• adjustable time delay as option
• 2 Models available:
  IL 5881:         61 mm deep with herminals near to the bottom to be
                        mounted in consumer units or industrial distribution 
                       systems according to DIN 43 880
  SL 5881:       98 mm deep with terminals near to the top to be
                       mounted in cabinets with mounting plate and cable
                       ducts        

• According to VDE 0413
• For DC- voltage systems
• Fixed response value
• Closed circuit operation
• Programmable for
  -  manual reset ( bridge LT1-LT2 )
  -  automatic reset ( without bridge )
• External reset button on LT1-LT2
• Test button to check the function of the device
• LED indicators
• 1 changeover contact
• Width 45 mm
Input
• Nominal voltage U_N:        DC 24, 42,110,230V   
                                     to 660 V on request
•Voltage rang:                   0,8... 1,1 U_N
• Frequency range:           45 ... 400 Hz
• Programmable for