ABB RD2 Residual Current Monitor (RCM) — Type A, 230 … 400 V AC, External Toroidal Transformer

The ABB 2CSM142120R1201 is an RD2 residual current monitor (RCM). Unlike an RCD, it does not break the circuit itself: it measures the leakage current flowing through an external toroidal transformer and signals through its output contact, so the tripping is done by a separate breaker or contactor — or not at all, where the requirement is to warn about deteriorating insulation while keeping a process running. Sensitivity and intervention time are set with the minidip switches on the front. This makes it the usual choice for monitoring large or continuous-process installations, and for retrofitting earth-fault monitoring where the existing breaker cannot be changed. It is a Type A device, so it detects sinusoidal AC and pulsating DC residual currents. Sensitivity and tripping delay are both set on the device, which is what lets one part number cover a range of installations and lets discrimination be arranged with the devices downstream. Supply voltage is 230 … 400 V AC. Supplied by cBallast on quote-to-invoice terms; lead time and freight are quoted per RFQ against the destination Incoterm.

Manufacturer part number (MPN)

2CSM142120R1201

EAN / GTIN

8012542058007

Sales unit

pcs

Type of Residual Current

Type A

Function

For AC-current system

Current Rating

Response value amperage 1 2000 ... 2000 mA

Number of Contacts

1 Delay Time ( τ ): Delay-On Energization, Maximum, Permitted 5 s; Delay-On Energization, minimum, Adjustable 0.3 s

Filter Option

no frequency filter

Options Provided

Pre-alarm threshold: no Rated Voltage (U r ): 400...400 V

Rated Operational Voltage

230 ... 400 V AC Rated Control Supply Voltage (U s ): (50 Hz) 400...400 V; (60 Hz) 400...400 V Rated Frequency (f): 50 … 60 Hz

Power Loss

Total 3.4 W

Number of Contacts CO

1

Number of Contacts NC

0

Number of Contacts NO

0

Product Net

Width

35 mm

Product Net

Height

0.085 m

Product Net Depth / Length

65 mm

Declaration of Conformity - CE

9AKK106713A5627

Instructions and Manuals

0400 - 9924

Mounting Type

DIN-Rail

ETIM 9

EC001445 - Residual current monitoring relay

UNSPSC

39121601

eClass

V11.0 : 27371809

Object Classification Code

F

Standards

IEC EN 62020

Type of electric connection

Screw connection Rated control supply voltage AC 50 Hz: 400 V Rated control supply voltage AC 60 Hz: 400 V Rated control supply voltage DC: 400 V Voltage type for actuating: AC With detachable clamps: No Response value amperage 1: 2000 mA Response value amperage 2: 2000 mA Min. adjustable delay-on energization time: 0.3 s Max. permitted delay-on energization time: 5 s Indication of difference current: No Error registration possible: No Number of contacts as change-over contact: 1

Width

35 mm

Height

85 mm

Depth

65 mm

Country of origin

Romania

Product family

ABB RD2 residual current monitor

Model

RD2

Device type

Residual current monitor (RCM), external toroidal transformer

Supply voltage

230 … 400 V AC

Reset

Manual

Pre-alarm threshold

Not fitted

Frequency filter

Not fitted

LED bar indicator

Not fitted

HS Code

8536.41

• EAN 8012542058007
• SAP 1200640904
• Code 83055810
• MPN 2CSM142120R1201
• Model RD2