Sophisticated Solid-State Decoupling


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Product Description

Building on Dairyland’s proven history of industry-leading product lines, the PCRX represents the next technological leap forward in decoupling technology. Using sophisticated design techniques that represent the work of numerous leading experts around the world, the PCRX’s new camouflage technology renders it virtually invisible to interrupted survey testing.

Like our other decouplers, the PCRX is a solid-state, maintenance-free device designed to simultaneously provide DC decoupling and AC continuity/grounding when used with cathodically protected structures. Commonly used to decouple electric equipment from grounding systems, for AC mitigation projects, or other isolation and grounding applications, the PCRX is the most sophisticated decoupler in the world.

AC Fault Current (AMPERES-RMS) 50/60Hz
5.0kA at 30 cycles
10kA at 30 cycles
15kA at 30 cycles

Review the Technical Literature for full fault current tables.

NEMA 4X (standard)
Ambient Temperature Range:
-40C to +50C (-40 to +122F)
Threshold Voltage
-3.0/+0.5V (standard)
-3.5/+0.5V (optional)
-4.5/+0.5V (optional)
100kA crest (8 x 20 µs waveform)
ANSI/ISA: Class I, Division 2, Groups A, B, C, D


The PCRX has been tested by Nationally Recognized Testing Laboratories (NRTLs) for compliance to independent standards in its operation, ratings, and construction.

Effective Ground-Fault Current Path
UL (United States) and C-UL (Canada) listing for:

  • NFPA 70 (US National Electric Code – NEC), Article 250.4 (A)(5)
  • CSA C22.1 (Canadian Electrical Code – CE Code) Rules 10-100 and 10-500.

Isolation of Objectionable DC Ground Current
UL (United States) and C-UL (Canada) Listing for:

  • NFPA 70 (US National Electrical Code – NEC), Section 250.6(E).
  • CSA C22.1 (Canadian Electrical Code – CE Code) Rules 10-100 and 10-500.

Hazardous Location (HazLoc) Use
The PCRX has been certified for use in Class I, Division 2, Groups A, B, C, D T5 hazardous locations to:

  • ANSI/ISA 121201
  • CSA C22.2 No.213

Note:  Applicable OrdLoc requirements included within ANSI/UL 61010-1 and CSA C22.1 No. 61010-1.


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