Function WRU-10 Earth Leakage Relay with Built-In Toroid — Type A, Ø28 mm Integral Toroid, Adjustable, Self-Reclosing

The WRU-10 differs from the RGU-10 in one decisive respect: the toroidal transformer is built into the unit, a Ø28 mm aperture through which the circuit conductors are passed directly. Relay and transformer are a single three-module device, so there is no separate toroid to size, order, mount or wire — the reason it is usually the cheaper and faster choice wherever the cable will physically pass through 28 mm. It is a self-reclosing device. After a trip it can re-close the circuit automatically, on a programmed number of attempts, which is what keeps an unattended or remote installation running through a transient earth fault instead of losing it until someone drives out to reset it — while still locking out and staying open on a genuine persistent fault. Sensitivity and delay are adjustable. A backlit LED display shows the trip current, the number of reclosures performed and the protection status. Three programmable output relays are provided, one change-over and two simple, on pluggable terminals. Supply is 230 V AC and the operating range is -20 to 70 °C. It is a type A device: it responds to sinusoidal AC residual currents and to pulsating DC residual currents. Circutor specify it as superimmunised, with high-frequency filtering and true RMS (TRMS) measurement, so that the harmonic leakage normal in an installation full of switch-mode loads does not read as a fault. Manufactured by Circutor (Spain) and supplied under the Function brand; the Circutor catalogue reference is WRU-10. Supplied by cBallast on quote-to-invoice terms; lead time and freight are quoted per RFQ against the destination Incoterm.

Manufacturer part number (MPN)

1661579

Sales unit

pcs

El-nummer (NO)

1661579

ETIM class

SC001444

Operating voltage AC 50 Hz

205–265 V

Operating voltage AC 60 Hz

205–265 V

External power supply required

Yes

Supply voltage AC 50 Hz

205–265 V

Supply voltage AC 60 Hz

205–265 V

Voltage type (operating voltage)

AC

Type of electric connection

Screw connection

Voltage type for actuating

AC

With detachable clamps

Yes

Function

For AC-current system

Rated frequency

50–60 Hz

Indication of insulation value

Yes

Error registration possible

No

Number of contacts as normally closed contact

1

Number of contacts as normally open contact

1

Number of contacts as change-over contact

1

Width

52 mm

Height

85 mm

Depth

70 mm

Country of origin

Spain

Device type

Earth leakage relay with built-in toroidal transformer, self-reclosing

Integral toroid aperture

Ø28 mm

Residual current type

Type A, superimmunised, TRMS measurement

Sensitivity

Adjustable

Self-reclosing

Yes, programmable number of reclosing attempts

Display

Backlit LED — trip current, reclosure count, protection status

Output relays

3 programmable (1 change-over + 2 simple)

Terminals

Pluggable / detachable

Operating temperature

-20 to 70 °C

Mounting

DIN rail (EN 50022 / DIN 46277), 3 modules

Manufacturer

Circutor, Spain

Manufacturer model

WRU-10

HS Code

8536.20

• 8433059081881
• El-nr 1661579
• Circutor WRU-10
• WRU-10