Product Model
FL SWITCH SFNB 4TX/FX ST

Selling Points
- 1Industrial-grade Ethernet switch with 4 TP RJ45 ports and 1 FO port.
- 2Supports 100 Mbps full duplex in ST-D format for reliable data transmission.
- 3Automatic detection of data transmission speed (10 or 100 Mbps) on RJ45 ports.
- 4Compact dimensions: 28 mm width, 110 mm height, and 70 mm depth.
- 5Mounts easily on DIN rail for efficient installation in industrial environments.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Parameter | Value | Parameter | Value |
---|---|---|---|
Width | 28 mm | Height | 110 mm |
Depth | 70 mm | Housing material | Aluminum |
Mounting type | DIN rail mounting | Connection method | RJ45 |
Note on the connection method | Auto negotiation and autocrossing | Transmission speed | 10/100 Mbps |
Transmission physics | Ethernet in RJ45 twisted pair | Transmission length | 100 m (per segment) |
Signal LEDs | Data receive, link status | No. of channels | 4 (RJ45 ports) |
Connection method | ST | Transmission speed | 100 Mbps (full duplex) |
Transmission physics | multi-mode fiberglass | Transmission length | 12.1 km (fiberglass with F-G 62.5/125 0.7 dB/km F1000) |
Wavelength | 1300 nm | No. of channels | 1 (ST multi-mode) |
Product type | Switch | Product family | Unmanaged Switch SFNB |
Type | Block design | MTTF | 144.5 Years (MIL-HDBK-217F standard, temperature 25°C, operating cycle 100%) |
Basic functions | Unmanaged switch / auto negotiation, complies with IEEE 802.3, store and forward switching mode | Status and diagnostic indicators | LEDs: U |
Additional functions | Autonegotiation | Basic functions | Unmanaged switch / auto negotiation, complies with IEEE 802.3, store and forward switching mode |
Local diagnostics | US Supply voltage Green LED
LNK/ACT Link status/data transmission Green LED
100 Data transmission speed Yellow LED | Maximum power dissipation for nominal condition | 4.2 W |
Transmission medium | Copper | Supply voltage (DC) | 24 V DC |
Supply voltage range | 12 V DC ... 48 V DC | Power supply connection | Via COMBICON, max. conductor cross section 2.5 mm² |
Residual ripple | 3.6 V | Typical current consumption | 175 mA (at U |
Connection method | Screw connection | Conductor cross section, rigid | 0.2 mm² ... 2.5 mm² |
Conductor cross section, flexible | 0.2 mm² ... 2.5 mm² | Conductor cross section AWG | 30 ... 12 |
Stripping length | 7 mm | Degree of protection | IP20 |
Ambient temperature (operation) | -10 °C ... 60 °C | Ambient temperature (storage/transport) | -20 °C ... 85 °C |
Permissible humidity (operation) | 5 % ... 95 % (non-condensing) | Permissible humidity (storage/transport) | 5 % ... 95 % (non-condensing) |
Air pressure (operation) | 86 kPa ... 108 kPa (up to 1500 m above sea level) | Air pressure (storage/transport) | 66 kPa ... 108 kPa (up to 3500 m above sea level) |
UL, USA / Canada | Class I, Div. 2, Groups A, B, C, D | Electromagnetic compatibility | Conformance with EMC Directive 2004/108/EC |
Noise immunity | EN 61000-6-2 | Noise emission | EN 61000-6-4 |
Basic functions | Unmanaged switch / auto negotiation, complies with IEEE 802.3, store and forward switching mode | Status display | LEDs: U |
Specifications may be subject to change without notice