The surge protector ÜSS04 was developed as a combined surge protection module to safeguard RS485 data lines and DC supply lines. A coarse and medium protection is integrated in the module for both the RS485 data line and the DC supply line. A current-compensated choke is also included for the DC side.
Surge protector
General data:
Working temperature: -40Cº to + 80Cº
MTBF: > 40000h
MTBR: < 10 min
Lightning protection zone: 1
Housing: ABS for standard rail mounting
Degree of protection: IP20
Dimensions: 90mmx35mmx32mm
Weight: about 110g
mech. Connections: Screw terminals for 0.2 to 2.5mm2 (AWG 24-14)
Connections: 1 RS485 input
1 RS485 output
Shield of the data line
1 +/- DC voltage input
1 +/- DC voltage output
1 PE
1 PE
Operating modes: passive surge protectionElectrical data:
For transmission rates: >500 kBits/sec.
Contact resistance: 4.2 ohms per line
Leakage current (8/20us): 5kA discharge surge current
5A leakage alternating current
Arrester rated voltage: 12 V DC Uc (core-earth)
Output voltage limitation spike: <12V (wire-wire at 1kV/us)
Static output voltage limitation: <12V (wire-wire at 1kV/us)
Static output voltage limitation: <12V (core-Gnd at 1kV/us)
Residual voltage at In: <12V (wire-wire and wire-gnd)
Protection level: <12V (wire-wire and wire-gnd)
Response time: <5ns
Cut-off frequency: 200kHz at 150 ohms
Rated Current: 510mA
DC supply path:
Contact resistance: 5.2 ohms per line
Inductance per path: 1.8mH
RS485 path:
Interface assignment: data A; data B; ground
Interface description: RS485 half-duplex
Voltage range DC input: >48VDC
Termination per port: none
For transmission rates: >500 kBits/sec.
Contact resistance: 4 ohms per line
Surge protection: 2.5kA discharge surge current
2.5A leakage alternating current