RS485 Surge Suppressor
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5 Year Replacement Warranty!
2D CAD DRAWINGS AND 3D MODELS
The ISO-485-P is an
industrial-grade (wide temperature
range) bi-directional passive RS485
surge suppressor. It can protect any
standard half duplex RS485 port from
voltage peaks and spikes caused by
lightning and other power surges. The
ISO-485-P protects the 2 lines: 485+
and 485- The unit is passive, therefore,
no external power or flow control is
required. The ISO-485-P has a
3-wire terminal block on one RS485 side
and a 2-wire terminal block on the other
The ISO-485-P provides three
stages of protection for maximum safety.
The first stage is a gas discharge tube.
The second stage is a series of
protection resistors. The third stage is
600W Transient Voltage Suppressor (TVS).
All three stages of protection are
provided for each of the RS485 lines.
When the ISO-485-P is placed
close to the RS485 device it is
protecting, it will suppress any voltage
levels above 6.8 volts without affecting
the normal operation of the data
transmission. When installing the
ISO-485-P it is very important that the
ground screw is connected to earth
ground with a minimum of 12 AWG copper
- Three Stage Protection of Both Lines
of the RS-485 Port
- Passive: No Need for External Power
- Plug-and-Play (Device is
- Terminal Connections for Easy
- Clamping Voltage at 6.8 Volts
- 600W of Surge Protection from
Electrical Surges and Lightning Strikes
- 5 Year Manufacturer's Warranty
- RoHS, CE and FCC Compliance Certified
- Surface Mount RoHS Compliant Technology
ISO 9001:2015 QUALITY MANAGEMENT
Our internationally recognized ISO 9001:2015 Quality Management System (Cert. No. 743003912) with a scope of “Design, Sales and Distribution of Data Communication Products”
was recognized and certified by TÜV Rheinland of North America known for its very demanding and stringent requirements. For more details see our Quality Policy.