Very Heavy Duty RS-232 Line Surge Suppressor

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The RSS-300 should be specified to protect electronic equipment that connects to an RS-232 line. The RSS-300 provides protection on up to three (3) individual RS-232 lines.

The RSS-300 is a very heavy duty RS-232 line surge suppressor designed to protect sensitive electronic equipment from damage caused by voltage transients appearing on an RS-232 data line. Up to three (3) RS-232 signal lines can be protected. For example, RXD, TXD and RTS. Protection is provided from line-to-line and from line-to-ground.

What distinguishes the RSS-300 from other suppressors is our unique three-stage design. Very high speed bi-directional SIDACTORsTM work in combination with MOVs and three-element heavy-duty gas discharge tubes to provide a suppressor that has an extremely fast response time yet can also dissipate large amounts of energy. Inter-stage wirewound resistors provide better surge current handling than competing carbon-film designs. Wide PC board traces and ground planes provide additional surge handling capability.

Surge Current
  ANSI C62 (8 x 20μS) Pins 1-2-G, 7-8-G
20,000 Amps

Energy Dissipation
  10 x 1000μS pulses at 500 Amps
2,000 Joules

Instantaneous Clamping Voltage
  Any one line-to-line or line-to-ground
+/-25 Volts P-P

Clamping Time
~ 1 nanosecond

In-circuit Series Resistance
10 ohms

Capacitance (Pins 1-2 and 7-8)
50 pF

Input/Output Connections
  Screw-terminal block with elevator cage-clamps
  (3 lines and Ground)

Ground Wire
  6-foot AWG 16 stranded with #10 ring terminal

  Double-sided adhesive square or screw mount

Size: 2 5/8"W x 3-7/8"H x 1-1/2"D

Enclosure: High-impact, injection-molded ABS plastic
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