New Products

DEHNconnect RK
DCO RK ME
Compact DIN Rail Mounted SPDs
1
3
2
IN
4
OUT
692
7 57
• Standard protection in the form of
blocks
• Low series impedance
• For installation in conformity with the
lightning protection zones concept at
the boundaries from 0 B – 2 and higher
Basic circuit diagram DCO RK ME
Dimension drawing DCO RK ME
Energy-coordinated two-stage arrester for protecting two single lines with common reference
potential as well as unbalanced interfaces.
Type DCO RK ME 12 DCO RK ME 24 DCO RK ME 48 DCO RK ME 110
Part No. 919 920 919 921 919 922 919 923
SPD class Q Q Q R
Nominal voltage (U N ) 12 V 24 V 48 V 110 V
Max. continuous operating d.c. voltage (U c ) 14 V 33 V 55 V 170 V
Max. continuous operating a.c. voltage (U c ) 9.5 V 23 V 38.5 V 120 V
Nominal current (I L ) 0.5 A 0.5 A 0.5 A 0.5 A
C2 Total nominal discharge current (8/20 μs) (I n ) 10 kA 10 kA 10 kA 10 kA
C2 Nominal discharge current (8/20 μs) per line (I n ) 5 kA 5 kA 5 kA 5 kA
Voltage protection level line-line for I n C2 (U p ) ≤ 55 V ≤ 110 V ≤ 175 V ≤ 500 V
Voltage protection level line-PG for I n C2 (U p ) ≤ 40 V ≤ 65 V ≤ 100 V ≤ 270 V
Voltage protection level line-line at 1 kV/μs C3 (U p ) ≤ 36 V ≤ 90 V ≤ 160 V ≤ 460 V
Voltage protection level line-PG at 1 kV/μs C3 (U p ) ≤ 19 V ≤ 45 V ≤ 80 V ≤ 230 V
Series impedance per line 1.8 ohms 1.8 ohms 1.8 ohms 1.8 ohms
Cut-off frequency line-PG (f G ) 2.5 MHz 6 MHz 10 MHz 16 MHz
Capacitance line-line (C) ≤ 1.2 nF ≤ 0.5 nF ≤ 0.3 nF ≤ 0.2 nF
Capacitance line-PG (C) ≤ 2.4 nF ≤ 1 nF ≤ 0.6 nF ≤ 0.4 nF
Operating temperature range -40°C...+80°C -40°C...+80°C -40°C...+80°C -40°C...+80°C
Degree of protection IP 00, with cover IP 20 IP 00, with cover IP 20 IP 00, with cover IP 20 IP 00, with cover IP 20
For mounting on 35 mm DIN rail 35 mm DIN rail 35 mm DIN rail 35 mm DIN rail
acc. to EN 60715 acc. to EN 60715 acc. to EN 60715 acc. to EN 60175
Connection (input/output) spring / spring spring / spring spring / spring spring / spring
Cross-sectional area, solid 0.08 - 2.5 mm 2 0.08 - 2.5 mm 2 0.08 - 2.5 mm 2 0.08 - 2.5 mm 2
Cross-sectional area, flexible 0.08 - 2.5 mm 2 0.08 - 2.5 mm 2 0.08 - 2.5 mm 2 0.08 - 2.5 mm 2
Earthing via DIN rail / terminal DIN rail / terminal DIN rail / terminal DIN rail / terminal
Enclosure material polyamide PA 6.6 polyamide PA 6.6 polyamide PA 6.6 polyamide PA 6.6
Colour yellow yellow yellow yellow
Test standards IEC 61643-21 / EN 61643-21 IEC 61643-21 / EN 61643-21 IEC 61643-21 / EN 61643-21 IEC 61643-21 / EN 61643-21
SIL classification SIL2 / SIL3 * ) SIL2 / SIL3 * ) SIL2 / SIL3 * ) SIL2 / SIL3 * )
Approvals GOST GOST GOST GOST
919 920
DCO RK ME 12
919 921
DCO RK ME 24
919 922
DCO RK ME 48
DCO 919 923 RK ME 12
919 DCO 920 RK ME 110
Überspannungsableiter-Reihenklemme 2-polig DEHNconnect RK
DCO RK ME 24
919 921
Überspannungsableiter-Reihenklemme 2-polig DEHNconnect RK
DCO RK ME 48
919 922
Überspannungsableiter-Reihenklemme 2-polig DEHNconnect RK
DCO RK ME 110
919 923
Überspannungsableiter-Reihenklemme 2-polig DEHNconnect RK
*) For more detailed information, please refer to www.dehn.de/en/sil/
Accessory for DEHNconnect RK
End Plate
for DCO RK
Type
AD DCO RK GE
Part No. 919 979
Enclosure material polyamide PA 6.6
Colour
yellow
Accessory for DEHNconnect RK
Quick Labelling System, horizontal Imprint
Plate with 2x plate numbers from 1 to 50 for DCO RK,
horizontal imprint
Type
BS 1 50 DCO RK
Part No. 919 977
Material
plastic
212 www.dehn.de