Function SECAP-25 J Directional Earth Fault Relay — IT Network, Adjustable 30–300 mA, Ø25 mm Integral Toroid, without Panel

The SECAP-25 is a DIRECTIONAL earth fault relay with a Ø25 mm summation transformer built into the unit, intended for IT (isolated-neutral) networks. Direction is the point of it. In an IT system every feeder is galvanically connected to every other one and the whole network shares its capacitive leakage to earth, so an ordinary earth-leakage relay watching one feeder also registers faults that belong to somebody else's circuit and raises an alarm nobody can act on. A directional relay resolves which side of itself a fault lies on and responds only to faults within its own installation, which is what makes the alarm mean something and what makes it possible to find the fault instead of merely knowing the network has one. It provides a potential-free normally-open alarm contact and a 12 V output for remote annunciation, which drives the CU-12 indicator panel. This is the J variant: ADJUSTABLE sensitivity from 30 to 300 mA with a 1 second delay, supplied WITHOUT the CU-12 indicator panel. The adjustable setting is what allows the relay to be lifted above an installation's standing capacitive leakage — the usual cause of an earth fault alarm that cannot be cleared because nothing is actually wrong — while still detecting a genuine insulation failure. For local indication, order the CU-12 alongside it or specify the SECAP25JP, which is the same relay supplied with the panel. Manufactured in Spain and supplied under the Function brand. Supplied by cBallast on quote-to-invoice terms; lead time and freight are quoted per RFQ against the destination Incoterm.

Manufacturer part number (MPN)

1661703

Sales unit

pcs

El-nummer (NO)

1661703

ETIM class

SC001444

Operating voltage AC 50 Hz

195–265 V

Operating voltage AC 60 Hz

195–265 V

External power supply required

Yes

Supply voltage AC 50 Hz

195–265 V

Supply voltage AC 60 Hz

195–265 V

Rated operating frequency

50–60 Hz

Voltage type (operating voltage)

AC

Type of electric connection

Screw connection

Rated control supply voltage AC 50 Hz

230 V

Rated control supply voltage AC 60 Hz

230 V

Voltage type for actuating

AC

With detachable clamps

No

Function

For AC-current system

Rated frequency

50–60 Hz

Indication of insulation value

No

Error registration possible

No

Number of contacts as normally open contact

1

Width

70 mm

Height

85 mm

Depth

70 mm

Country of origin

Spain

Device type

Directional earth fault relay with built-in summation transformer

Network type

IT (isolated neutral)

Directional

Yes — responds only to earth faults within its own installation

Sensitivity (IΔn)

30 – 300 mA, adjustable

Tripping delay

1 s

Integral toroid aperture

Ø25 mm

Alarm output

Potential-free normally-open contact, plus 12 V output for remote annunciation

Indicator panel

Not included — CU-12 panel available separately

Variant code

J = adjustable sensitivity (adjustable)

Model

SECAP-25 J

HS Code

8536.20

• 7070587100205
• El-nr 1661703
• SECAP-25 J