PV string monitoring module - SCK-M-I-8S-20A

SCK measuring module for monitoring photovoltaic systems, 8 x current measurement up to 20 A, 1 x digital input, interface to SCK communication module, interface to voltage measuring module

Product Details

Product type Current transducer
Insulation characteristics
Pollution degree 2

Maximum power dissipation for nominal condition 1.15 W
Protective circuit Surge protection; 33 V suppressor diode
Nominal supply voltage via the SOLARCHECK communication module
Supply voltage range via the SOLARCHECK communication module
Own current consumption 43 mA (typical)
50 mA (maximum)

Signal: digital
Description of the input Digital input
Available input sources Floating switch contacts
Cable length ≤ 30 m
Signal: analog
Description of the input Analog input
Voltage input signal 0 V ... 10 V
Number of inputs 8
Input current range 0 A DC ... 20 A DC (UL: 0 A DC...25 A DC)
Reverse current detection -1 A DC ... 0 mA
LSB: Current 20 mA
Overload capacity 5 x IN
Temperature coefficient, typical 0.02 %/K (TK20)
Maximum transmission error ± 1 % (From the measuring range final value)

Connection method Screw connection
Conductor cross section solid 0.2 mm² ... 2.5 mm²
Conductor cross section flexible 0.2 mm² ... 2.5 mm²
Conductor cross section AWG 24 ... 12
Tightening torque 0.5 Nm ... 0.6 Nm

Data: Data interface to SCK-C-MODBUS
Transmission length ≤ 300 m (0.14 mm²)
≤ 500 m (1.5 mm²)
Protocols supported Proprietary

Item dimensions
Width 22.5 mm
Width 22.5 mm
Height 102 mm
Depth 128.5 mm
Circular conductor
Diameter 9.5 mm

Ambient conditions
Degree of protection IP20
Ambient temperature (operation) -20 °C ... 70 °C
Ambient temperature (storage/transport) -40 °C ... 85 °C
Altitude ≤ 2000 m
Permissible humidity (operation) ≤ 95 % (non-condensing)

Certificate CE-compliant
UL, USA / Canada
Identification 508 Listed
Identification 1741 Recognized

Low Voltage Directive Conformance with Low Voltage Directive
Electromagnetic compatibility Conformance with EMC directive
Noise emission EN 61000-6-4
Noise immunity EN 61000-6-2
Note When being exposed to interference, there may be minimal deviations.

Standards/regulations EN 61010-1

Mounting type DIN rail: 35 mm
DIN rail mounting

Item number 2903241
Packing unit 1 pc
Minimum order quantity 1 pc
Sales Key C26
Product Key CK4D11
Catalog Page Page 243 (C-5-2019)
GTIN 4046356729703
Weight per Piece (including packing) 322.9 g
Weight per Piece (excluding packing) 300 g
Customs tariff number 90303370
Country of origin DE


ECLASS-9.0 27210123
ECLASS-10.0.1 27210123
ECLASS-11.0 27210123


ETIM 8.0 EC002475


UNSPSC 21.0 39121000

UL Recognized

Approval ID: FILE E 325209


Approval ID: RU*DE.*08.B.01536/19

UL Listed

Approval ID: FILE E 140324

cUL Listed

Approval ID: FILE E 140324

cULus Listed

REACh SVHC Lead 7439-92-1
China RoHS Environmentally Friendly Use Period = 50 years
For information on hazardous substances, refer to the manufacturer’s declaration available under “Downloads”