EOCR SSD – Protection Relay with Digital Display

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EOCR SSD – Protection Relay with Digital Display

Concord EOCR · Motor Protection
EOCR SSD – Protection Relay with Digital Display

A 2-CT based digital protection relay that directly replaces the EOCR SS model, adding a 7-segment LED display that shows the maximum current in any phase and the cause of every trip. Suitable for single-phase and three-phase motors.

Current setting – Type 050.5–6 A
Current setting – Type 303–30 A
Current setting – Type 6010–60 A
Starting delay time (D-Time)1–30 s
Operating time (O-Time)1–10 s
ResetManual / remote
All specifications (11)
Current setting – Type 050.5–6 A
Current setting – Type 303–30 A
Current setting – Type 6010–60 A
Starting delay time (D-Time)1–30 s
Operating time (O-Time)1–10 s
ResetManual / remote
Overcurrent tripDefinite
Control voltage24–240 V AC/DC
Contact rating2 SPST, 3 A / 250 V AC
Fault diagnosis7-segment LED display
Mounting35 mm DIN rail / base
Features
  • 2-CT based digital protection relay – directly replaces the SS model
  • Displays maximum current in any phase
  • 7-segment LED diagnostic display
  • Highly accurate protection for phase loss and locked rotor
  • Space-efficient, micro-compact design
  • Independent settings for D-Time, O-Time and current
  • Suitable for 1-phase or 3-phase motors
  • Universal power supply for AC/DC (24–240 V)
Protection Functions
Protection functionOperation time
OvercurrentOperates after O-Time
Phase lossOperates within 3 s
Locked rotorOperates immediately if 200% or more of the set current continues after D-Time
Trip Cause Display & Overcurrent Time Characteristic

Trip Cause Display

Concord EOCR SSD trip cause display codes
EOCR SSD trip cause display codes

Overcurrent Time Characteristic

Concord EOCR SSD definite-time characteristic curve
EOCR SSD definite-time characteristic curve
Example Wiring Diagram
Concord EOCR SSD wiring diagram
EOCR SSD wiring diagram
Dimensions (mm)
Concord EOCR SSD dimensions
EOCR SSD dimensions