Function CBS-4 Multipoint Earth Leakage Relay — 4 Channels, Type A, 30 mA–30 A, 0.02–10 s

The CBS-4 is a multipoint earth leakage relay: one unit that monitors and protects four separate circuits independently, each through its own external toroidal transformer of the Circutor WG/WGC range. Circutor's own title for the family, in the instruction manual, is "Multipoint earth leakage relay". It carries five output relays — four to trip the circuit breaker of each protected channel, and one further relay for the pre-alarm and maintenance function, which is what lets a developing insulation fault be found and repaired before it trips anything. Sensitivity is adjustable from 30 mA to 30 A and the tripping delay from 0.02 to 10 seconds, per channel, and the unit is fully programmable and suitable for all neutral earthing arrangements — TT, TN and IT. It occupies three DIN modules and runs from a 230 V AC supply. 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 CBS-4. Supplied by cBallast on quote-to-invoice terms; lead time and freight are quoted per RFQ against the destination Incoterm.

Manufacturer part number (MPN)

CBS-4

EAN / GTIN

8433059335212

Sales unit

pcs

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

Rated frequency

50–60 Hz

Indication of insulation value

Yes

Error registration possible

No

Number of contacts as normally closed contact

4

Number of contacts as normally open contact

4

Number of contacts as change-over contact

4

Width

60 mm

Height

95 mm

Depth

95 mm

Country of origin

Spain

Device type

Multipoint earth leakage relay (residual current monitoring and protection)

Number of channels

4, independently monitored

Residual current type

Type A, superimmunised, TRMS measurement

Sensitivity range (IΔn)

30 mA – 30 A, adjustable per channel

Tripping delay

0.02 – 10 s, adjustable

Toroidal transformer series

Circutor WG / WGC range (external, ordered separately)

Neutral earthing arrangements

TT, TN and IT

Programmable

Yes, fully programmable

Mounting

DIN rail, 3 modules

Manufacturer

Circutor, Spain

Manufacturer model

CBS-4

HS Code

8536.20

• EAN 8433059335212
• SAP 1000078532
• Code 8812556
• Circutor CBS-4
• CBS-4
• El-nr 1661444