Function MICRO-4 Earth Fault Relay — Adjustable 30–300 mA, 1 s, without Panel

The MICRO-4 is a compact earth fault relay with adjustable sensitivity from 30 to 300 mA and a 1 second tripping delay, running from a 230 V AC supply and providing a potential-free normally-open alarm contact. An earth fault relay measures the residual current — the difference between the current flowing out to a load and the current returning from it, which is only non-zero when some of it is escaping to earth — and signals rather than breaking the circuit itself, so it can be applied to circuits far larger than a self-contained RCD could switch and set for sensitivity independently of the device it drives. This is the version supplied WITHOUT the indicator panel, for installations where the alarm contact is taken to a control system rather than read locally. The only difference between this item and the MICRO-4 listed with a panel is the panel itself — the relay, its 30 to 300 mA adjustable range and its 1 second delay are identical. 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)

1661510

Sales unit

pcs

El-nummer (NO)

1661510

ETIM class

SC001444

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 voltage

230 V

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

90 mm

Depth

70 mm

Country of origin

Spain

Device type

Earth fault relay

Sensitivity (IΔn)

30 – 300 mA, adjustable

Tripping delay

1 s

Alarm output

Potential-free normally-open contact

Indicator panel

Not included

Model

MICRO-4

HS Code

8536.20

• 7070587118729
• El-nr 1661510
• MICRO-4