Function CBS-2000AB Hybrid Multi-Channel Earth Leakage Monitoring Relay — 20 Channels (16 Type A + 4 Type B), 30–3000 mA, RS-485 Modbus

The CBS-2000AB is the hybrid unit of the CBS range, and that is the whole reason it exists: it monitors twenty channels in one enclosure, of which sixteen are type A, taken from toroidal transformers of the Circutor WGC range, and four are type B, taken from transformers of the WGB range. Real installations are mixed. Most outgoing ways carry ordinary loads that a type A channel measures correctly and far more cheaply, while a handful — the drives, the rectifiers, the chargers — can present smooth DC leakage that only a type B channel can see at all. This unit covers both without either buying type B monitoring for every way in the board or leaving the drives unmonitored. Sensitivity is 30 to 3000 mA. All twenty channels are shown on the display; two relays provide alarm and pre-alarm, and integrated RS-485 Modbus/RTU allows continuous logging. Suitable for TT, TN and IT systems, 230 V AC supply. The type A channels respond to sinusoidal AC and pulsating DC residual currents. The four type B channels respond in addition to smooth DC residual current, which is the case that matters: smooth DC leakage magnetically saturates the core of a type A or type AC device and blinds it to any further fault. That is why the drives, rectifiers, EV chargers and photovoltaic inverters belong on the type B channels and everything else does not need to. Manufactured by Circutor (Spain) and supplied under the Function brand; the Circutor catalogue reference is CBS-2000AB. This item is listed in the Norwegian trade under the supplier shorthand "CBS-20AB", which is not a Circutor model code — the manufacturer designation is CBS-2000AB. Supplied by cBallast on quote-to-invoice terms; lead time and freight are quoted per RFQ against the destination Incoterm.

Manufacturer part number (MPN)

1602031

Sales unit

pcs

El-nummer (NO)

1602031

ETIM class

SC001444

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

With detachable clamps

Yes

Function

For AC-current system

Indication of insulation value

Yes

Error registration possible

Yes

Number of contacts as change-over contact

2

Width

105 mm

Height

118 mm

Depth

74 mm

Country of origin

Spain

Device type

Hybrid multi-channel residual current monitoring and protection relay

Number of channels

20 total — 16 type A + 4 type B

Residual current type

Type A (16 channels) and type B (4 channels)

Sensitivity range (IΔn)

30 – 3000 mA

Toroidal transformer series

Circutor WGC range for the type A channels; WGB range for the type B channels (external, ordered separately)

Communications

RS-485, Modbus/RTU

Output relays

2 change-over (alarm and pre-alarm)

Neutral earthing arrangements

TT, TN and IT

Mounting

DIN rail

Manufacturer

Circutor, Spain

Manufacturer model

CBS-2000AB

HS Code

8536.20

• 8433059378332
• El-nr 1602031
• Circutor CBS-2000AB
• CBS-2000AB
• CBS-20AB