Protection relays and residual current reclosing, Type A ultra-immunised with built-in transformer

Self-reclosing relay
Self-reclosing relay
Self-reclosing relay
Self-reclosing relay

WRU-10-RAL0,3-1

WRU-10-RAL0,3-1, Residual current relay

Code: P24457.

  • Usefull diam.(mm): 28
  • IΔn (A): 0,3 … 1 A
  • Delay: 0,02 INS
  • Nr. reclosures: Programmable
  • Time betwen reclosures: Programmable
  • Breaking element: Contactor
  • Type of protection: Type A

INFORMATION

Description

Electronic residual current protection relay with self-reclosing system, with built-in 28 mm transformer, forming a single unit. Super-immunised type-A relay with high-frequency current filtering and high immunity. True root mean square (TRMS) measure. Display with LEDs and backlit display:

  • Residual current reclosing / protection parameters
  • Protection trip current.
  • Number of reclosures
  • Protection status messages, etc.

 Device with three changeover contact output relays and two simple relays (all relays can be programmed). The main relay provides the protection associated with the contactor, one is for the prealarm and the other one is for interlocking once the maximum number of reclosures has been reached. It also has a voltage-free input for external tripping and rearming.

  • Assembly on DIN 46277 rail (EN-50022)
  • Compact size: 3 modules
  • Connection by pluggable terminal strips

 

Applications

WRU-10 RAL relays associated with a contactor allow automatic reclosing after tripping, thus offering the most adequate solution for street lights, ATMs, refrigerating chambers, traffic lights, etc. Their design features guarantee maximum security and electrical service continuity, avoiding unwanted tripping.

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SPECIFICATIONS

AC power supply
Consumption
4,5 VA
Frequency
50/60 Hz
Nominal voltage
230 V ~ ±30 %
Mechanical characteristics
Size (mm) width x height x depth
52.5 x 109.4 x 75 (mm)
Cable length to be stripped (mm)
7
Torque setting
0,5 … 0,6 Nm
Cable gauge at power supply terminals
1 … 1.5 mm2
Fastening
DIN 46277 (EN 50022)
Weight (kg)
0,168
Environmental characteristics
Protection class
IP 20
Relative humidity (without condensation)
95%
Working temperature
-20 … +70 ºC
External reset input for tripping
Type
Voltage free, not insulated
Standards
Electrical safety, Maximum height (m)
2000
Standards
IEC 60947-2-M, IEC 60755, IEC 62020
Other digital relay outputs
Nominal load
1250 VA
Nominal current
5 A ~
Nominal voltage
250 V ~
Digital relay outputs
Nominal load
62,5 VA
Nominal current
0,25 A ~
Nominal voltage
230 V ~
Differential protection
Type
Type A ultra-immunised
Sensitivity (I∆n), A
0,3-0,5-1 (Setup)
Delay time (t∆)
Direct setting: 0.02
Protection
LED indication
Power supply voltage Earth leakage tripping Prealarm Latching
Measure
True root mean square (TRMS)
Reclosure type
Reclosure number
Programmable
Reset time
Programmable
Reclosure time
Programmable

DIMENSIONS

CONNECTIONS

VIDEOS

DOWNLOADS

User's manual
3D
Dimensions
Datasheet
CE-certified
Other Certificates

ACCESORIES

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