SALTEK DM-024/1 4R DJ SPD – Data, Signalling and Telecommunication

Coupling impedance (R – resistance)

Coarse and fine surge protection for 4-core signalling lines
Installation close to protected equipment
For protection of communication interfaces of I&C, electronic security and fire detection systems, etc. (mainly for RS-485 interfaces) against impact of surge voltage
Coarse and fine surge protection in differential mode (core – core) and coarse protection in common mode (core – PE)

Specifications:

Parameter name		Parameter value
Type of SPD		C2,C3
Location of SPD		ST 2+3
Mounting		DIN rail 35 mm
Nominal voltage	U_n	24 V DC
Maximum operating voltage	U_c	20.60 V AC
Maximum operating voltage	U_c	29.10 V DC
Nominal load current	I_L	0.060 A
Treshold frequency core-core	f	3.40 MHz
Serial resistance per core	R	6.80 Ω
C2 nominal discharge current (8/20 µs) per core	I_n	10.00 kA
C2 voltage protection level mode core-PE at In	U_p	350 V
C2 voltage protection level mode core-core at In	U_p	50 V
C3 voltage protection level mode core-PE at 1 kV/µs	U_p	650 V
C3 voltage protection level mode core-core at 1 kV/µs	U_p	40 V
Response time core-core	t_a	1 ns
Response time core-PE	t_a	100 ns
Connection (input - output)		terminals-terminals
Cross-section of connected conductors solid (max)		4.00 mm²
Cross-section of connected conductors stranded (max)		2.50 mm²
Degree of protection		IP 20
Range of ambient temperatures (min/max)		-40 / 80 °C
According to standard		EN 61643-21+A1,A2:2013, IEC 61643-21+A1,A2:2012
ETIM Class		EC001625
Customs tariff number		85363010
EAN		8595090513575