PT-RD DC — Surge Protection Device

DynaShield® PT-RD DC Surge Suppression

The PT-RD DC Series is designed to protect DC power supply system against transient surges at LPZ1 and higher. Ideal for use in SCADA Systems, PLCs, and most other sensitive electronic equipment.

  • Peak surge current up to 20 kA
  • Continuous current up to 30 A
  • Series or parallel installation
  • Screw or DIN mount
  • LED Status
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DynaShield Applications

ALLTEC’s Protection Pyramid depends on DynaShield® products to support its comprehensive facility framework. The second tier of protection diminishes the significance of random high-energy, short-duration electrical power transients through properly installed surge protective devices. These occurrences are typically caused by atmospheric phenomena (such as lightning strikes), utility switching, inductive loads, and internally generated overvoltages. You can view typical installation locations in the application maps to the right by locating the numbers 5 and 6.

Model PT-RD-05-05V-05A PT-RD-20-12V-15A PT-RD-10-24V-15A PT-RD-20-24V-30A PT-RD-20-48V-30A
Tested To IEC 61643-11, IEEE C62.45
SPD Category Class II
Number Of Ports  Two Port Device
Technology Metal Oxide Varistor (MOV)
Nominal Voltage UN 5 V 12 V 24 V 24 V 48 V
Maximum Current 5 A 15 A 15 A 30 A 30 A
Maximum Continuous Operating Voltage UC 10 Vdc 16 Vdc 30 Vdc 30 Vdc 70 Vdc
Nominal Discharge Current
IN 8 x 20 μs)
3 kA 3 kA 3 kA 3 kA 3 kA
Maximum Discharge Current
Imax (8 x 20 μs)
5 kA 20 kA 10 kA 20 kA 20 kA
Voltage Protection LeveL
UP @ IN (8 x 20 μs)
142 V 165 V 188 V 180 V 204 V
Response Time ≤ 25 ns
Visual Status Indication LED: Green = Normal, Dark = Replace
Location Category  Indoor Only
Method of Mounting Wall mount or Fixed 35 mm DIN rail
Dimension (H x W x D) 3.94” x 1.4” x 2.3”
100 mm x 35.6 mm x 57.9 mm
3.94” x 2.8” x 2.3”
100 mm x 71.1 mm x 57.9 mm
Weight (Max) 0.5 lb (0.25 kg) 0.9 lb (0.45 kg)
Maximum Wire Size #14 AWG
Multistrand 2.08 mm2
#6 AWG
Multistrand 13 mm2
Operating Temperature -40° F to +176° F (-40° C to +80° C)
Relative Humidity ≤ 95% non-condensing
Altitude ≤ 3000 m
Enclosure Protection Level  IP 20
Housing Inflammability Rating Thermoplastic, UL 94 V-0

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