Technical information

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Type of device Unmanaged switches, 5 ports, copper twisted pair and fibre optic
Interfaces Copper cable ports Number and type 4 x 10BASE-T/
100BASE-TX ports
3 x 10BASE-T/
100BASE-TX ports
4 x 10BASE-T/
100BASE-TX ports
3 x 10BASE-T/
100BASE-TX ports
Shielded connectors RJ45
Medium Shielded twisted pair, category CAT 5E
Total length of pair 100 m
Fibre optic ports Number and type 1 x 100BASE-FX port 2 x 100BASE-FX ports 1 x 100BASE-FX port 2 x 100BASE-FX ports
Connectors SC
Medium Multimode optical fibre Single mode optical fibre
Length of optical
fibre
50/125 µm 5000 m (1) –
62.2/125 µm 4000 m (1) –
9/125 µm fibre – 32,500 m (2)
Optical fibre
attenuation analysis
50/125 µm fibre 8 dB –
62.2/125 µm fibre 11 dB –
9/125 µm fibre – 16 dB
Ethernet services –
Topology Number of switches Cascaded Unlimited
Redundant in a ring –
Redundancy P1 and P2 redundant power supplies
Power supply Voltage 24 V c
(18…32 V) safety extra low voltage (SELV)
Consumption 200 mA max. 240 mA max. 200 mA max. 240 mA max.
Removable terminal block 5-way
Operating temperature - 40...+ 70°C
Relative humidity 10…95% non condensing
Degree of protection
IP 20
Dimensions W x H x D 47 x 135 x 111 mm
Mounting On symmetrical DIN rail, 35 mm wide
Weight 0.330 kg 0.335 kg 0.330 kg 0.335 kg
Conformity to standards
cUL 60950, cUL 508 and CSA 22.2 No. 142, UL 1604 and CSA 22.2 No. 213 class 1 division 2,
e, GL, C-Tick
LED indicators P1 and P2 power supplies, Ethernet link status, transmission activity
Alarm relay Activity, power supply fault, Ethernet network fault or communication port fault (volt-free contact
1 A max. at 24 V c)
Reference
499 NMS 251 01 499 NMS 251 02 499 NSS 251 01 499 NSS 251 02
Pages 3/44
(1) Length dependent on the attenuation analysis and attenuation of the optical fibre
(typical value: 2000 m)
(2) Length dependent on the attenuation analysis and attenuation of the optical fibre
(typical value: 15,000 m)
Selection guide (continued)
Ethernet network
Cabling system
Managed and unmanaged ConneXium switches