IS THREADED SIGNAL SURGE PROTECTOR 36VDC 10KA 3 WIRE M20

The intrinsically safe and flameproof IS-SLT range provides surge protection for most twisted pair signal cables associated with intriscally safe field devices.Novaris ‘IS-SLT’ products are certified intrinsically safe and flameproof according to IEC Ex and ATEX and so may be installed in Ex d rated instruments without loss of integrity.The multistage design provides a high energy gas discharge tube (GDT) as primary protection for common mode disturbances, commonly associated with lightning strikes and power system earth faults and a secondary metal-oxide varistor clamping stage across the signal lines. This combination provides very robust surge protection with high transient suppression and low let-through voltages. In addition protection is provided for cable screens which may be open circuit at the instrument.

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