Consilium Isolator NS-Isolator-A Intrinsically Safe Isolator N1790


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The Consilium Salwico NS-Isolator-A N1790 is an IS isolator, used in combination with Salwico IS addressable detectors and manual call points. The NS-Isolator-A N1790 contains an IS-Isolator and a LISA-2 connection board.

The NS-Isolator-A is located in non-hazardous areas and forms the interface to the IS detectors and other IS line units. To each addressable detector loop a maximum of five ISOLATOR-A units can be connected, each of them accommodating up to 20 IS line units.

The Salwico NS-Isolator-A does not need a separate power supply or earth connection. It is powered directly from the fire alarm panel via the loop cable, meaning no extra cables are needed.



Additional information

Weight 1 kg
Working Voltage

27-38 VDC

Nominal Voltage


Isolator Approval

Ex ia

Cable Terminals


Temperature Range

-20°C to +60°C

Relative Humidity

0 to 100% RH


~700 g

End of Line Resistor

10 kΩ

IP Rating


Cable Dimension

8 – 14 mm






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