RS PRO Monitoring Relay, 3 Phase, SPDT, DIN Rail, 0 V ac

View all Monitoring Relays

Subtotal (1 unit)*

R 2 432,53

(exc. VAT)

R 2 797,41

(inc. VAT)

Add to Basket
Select or type quantity
In Stock
  • 81 unit(s) ready to ship from another location
  • Plus 11 unit(s) shipping from 18 May 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
1 +R 2,432.53

*price indicative

RS stock no.:
223-7788
Manufacturer:
RS PRO
Find similar products by selecting one or more attributes.
Select all

Brand

RS PRO

Product Type

Monitoring Relay

Electrical Phase

3

Function

Undervoltage Monitoring

Contact Configuration

SPDT

Mount Type

DIN Rail

Power Consumption

5VA

Terminal Type

Screw

IP Rating

IP20, IP40

Contact Current

5A

Supply AC Voltage

0 V ac

Minimum Operating Temperature

-10°C

Maximum Operating Temperature

60°C

Length

66.21mm

Height

90mm

Standards/Approvals

No

Series

DMS

Width

36 mm

COO (Country of Origin):
IN

RS PRO Digital Voltage Monitoring Relays


RS PRO is proud to present a complete range of control monitoring relays designed for single-phase or 3 phase systems. Each relay is packed with excellent features to ensure effective protection against all types of low voltage faults. These high-quality monitoring devices offer over-voltage and under-voltage protection, protect against voltage phase sequence, phase loss, and phase asymmetry, over & under frequency, and neutral open.

Display Screen


The front panel details on the display screen include fault window and menu feature parameter, line or phase voltage, delay timer status, time in seconds, percentage asymmetry, frequency in Hz, voltage, Instantaneous voltage, or other settable parameters and relay status.

Four key programming


  • Escape, scroll up, scroll down and enter

    • Connection


  • Connection for supply voltage and relay is illustrated on the side of the device.

    • Features and Benefits


  • LCD Display with Green Backlight

  • DIN Rail mounting

  • True RMS Measurement @ 2kHz sampling rate

  • Protection against Phase loss, Phase Sequence, Phase Asymmetry, Under Voltage, Over Voltage, Neutral fault, Over Frequency & Under Frequency

  • Can be configured for 3-Phase 3-Wire or 3-Phase 4-Wire supplies,145-500VAC (DMA220 50-500VAC)

  • Selectable overvoltage/ undervoltage, Asymmetry, Phase Loss, Phase Sequence, Over Frequency Under Frequency & Neutral Fault monitoring

    • Prominent Features


  • Adjustable ON-OFF time delay

  • Time Delay in seconds/minutes

  • 5A Single and Dual relay outputs

  • Two Separate Relay outputs with independent Programming

  • Password protection

  • Log of 5 previous faults for better monitoring

  • Fail-safe/Non-Fail-safe relay configuration

  • Latch (Manual-reset) and Non-Latch (Auto-reset) alarm modes

    • RS PRO Digital Voltage Monitoring Relay Variants


  • 145-500 VAC, Digital Voltage Monitoring Relay, 1C/O = RS stock no: 223-7788

  • 145-500 VAC, Digital Voltage Monitoring Relay, 1C/O + 1C/O = RS stock no: 223-7789

  • 50-500 VAC, Digital Voltage Monitoring Relay with 85-300Vac/dc Auxiliary supply, 1C/O + 1C/O = RS stock no: 223-7790

    • Applications


  • Switchgear

  • Control Gear

  • Machine Control

  • Mains Distribution Systems

    • Why RS PRO?


    RS PRO is the own brand of RS. The RS PRO Seal of Approval is your assurance of professional quality, a guarantee that every part is rigorously tested, inspected, and audited against demanding standards. Making RS PRO the Smart Choice for our customers.

    Related links