Cynergy3 DA (UL) Series

Cynergy3 DA (UL) Series

The DA (UL) series of normally open, high voltage relays offers an isolation voltage of 7.5kV with contact resistance as low as 15mΩ (typical for Rhodium contacts). These relays utilise high vacuum reed switches to achieve their excellent characteristics, and are available in choice of Rhodium or Tungsten contacts - the Rhodium contacts offer lower contact resistance, while the Tungsten handles higher switching voltages. The DA (UL) series of relays is offered as PCB and panel mountable with variety of connection options. The series has been UL approved as per pollution degree 2 classification. The DA (UL) series offers a working temperature range from -20°C up to +70°C.

  • UL approved, normally open, high voltage relays
  • 7.5kV isolation voltage
  • Contact resistance typically 15mΩ with Rhodium contacts (50mΩ maximum)
  • Maximum switching voltage as high as 5kV with Tungsten contacts
  • Excellent AC characteristics
  • PCB or panel mount versions available
  • Choice of HV connection includes flying leads, solder turret (wire wrap) or 1/4" spade terminals
  • Working temperature from -20°C up to +70°C

Typical applications for the Cynergy3 DA (UL) N/O high voltage relay series include:

  • Medical - cardiac defibrilators
  • Test equipment
  • High voltage power supplies

The below table gives the full specifications for each resistor model available including the Cynergy3 DA (UL) series:

Cynergy3 DA (UL) series specifications
Additional Features
  • Normally Open, High Voltage Relays
  • UL Approved
  • Low contact resistance
  • Excellent AC characteristics
Coil Voltage
  • 5V
  • 12V
  • 24V
Connection Type
  • PCB mount
  • Flying leads
  • Solder turret (wire wrap)
  • 1/4" spade terminals
  • Panel mount
Contact Form
  • Rhodium
  • Tungsten
Isolation 7.5kV
Operating Temperature -20°C to +70°C
Voltage Rating
  • Rhodium contacts: 1kV
  • Tungsten contacts: 5kV

We are pleased to provide you with a range of additional content including product datasheets, case studies, white papers and application notes for your reference. Please see below for the latest content available:



PDF Document Cynergy3 DA (UL) High Voltage Relay Series Datasheet
PDF Document Application notes for Cynergy3 high voltage reed relays
PDF Document How to protect reed switch contacts
PDF Document Cynergy3 provide High Voltage Reed Relays to DIAN racing
PDF Document Cynergy3 is delighted to be sponsoring Elefant Racing Bayreuth

Below is a part number break down for the DA (UL) High Voltage Relay series:

Cynergy3 DA (UL) Series ordering information

This product is available fully compliant to the RoHS EU directive 2011/65/EU.

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  • Product Code: Cynergy3 DA (UL) 7.5kV N/O Relay Series
  • SKU: Cynergy3 DA (UL) 7.5kV N/O Relay Series
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Available Options

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