Ethernet switch, 24 Ethernet ports on the front in RJ45 format, automat - PHOENIX CONTACT - FL SWITCH 1924 - 2891057 View larger
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Ethernet switch, 24 Ethernet ports on the front in RJ45 format, automat - PHOENIX CONTACT - FL SWITCH 1924 - 2891057





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Ethernet switch, 24 Ethernet ports on the front in RJ45 format, automatic detection of 10, 100 or 1000 Mbps data transmission rate, coupling of network segments with different transmission speeds, auto crossing function, installs in 19-in. (482 mm) rack

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Product description

Ethernet interface

The FL SWITCH 1924 has 24 Ethernet ports in RJ45 format. It is mounted in a 19-in. (482 mm) rack with AC power. The data transmission speed is 10 Mbps, 100 Mbps or 1000 Mbps. The switch also supports jumbo frames.

Each port has an auto crossing function. It is not necessary to make a distinction between 1:1 or crossover Ethernet cables. Mounting brackets and power cords for EEC (CEE 7/4) and North America (NEMA 5-15) are included. User supplies screws for bracket to rack connection.

Switching properties of FL SWITCH 1924


All data telegrams that are received by the switch have their validity checked. Invalid or faulty data packets (>9216 bytes or CRC errors) and fragments (<64 bytes) are rejected. Valid data telegrams are forwarded by the switch. The switch always forwards the data using the data transmission speed that is used in the destination network segment.

–Multi-address function:

The switch independently learns the addresses for termination devices, which are connected via a port, by evaluating the source addresses in the data telegrams. Only packets with unknown addresses, with a source address of this port or with a multicast/broadcast address in the destination address field are forwarded via the corresponding port. The switch can store up to 8192 MAC addresses in its address table.

–Quality of service (QoS): IEEE 802.1P/Q

The FL SWITCH 1924 switches are capable of reading Ethernet packets that have already been assigned a priority level by a managed switch. In case of heavy traffic, packets with a priority level between 4 and 7 are considered high priority and processed before packets with a priority level between 0 and 3 (2:1 ratio). After prioritization the packets are forwarded without modification.


The metal RJ45 socket housings are connected to earth/ground. For maximum noise immunity, shielded RJ45 connectors and cables should be used.


Width482 mm
Height44 mm
Depth210 mm

Ambient conditions

Degree of protectionIP20
Ambient temperature (operation)0 °C ... 60 °C
Ambient temperature (storage/transport)-25 °C ... 70 °C
Permissible humidity (operation)5 % ... 95 % (non-condensing)
Air pressure (operation)86 kPa ... 108 kPa (1500 m above sea level)


Interface 1Ethernet
No. of ports24 (RJ45 ports)
Connection methodRJ45
Transmission physicsTwisted pair connection
Transmission speed10/100/1000 MBit/s (full or half duplex)
Transmission length100 m (per segment)
Signal LEDsActivity, link status


Basic functionsUnmanaged switch / auto negotiation, complies with IEEE 802.3, store and forward switching mode
MAC address table8192
Status and diagnostic indicatorsLEDs: US, link and activity per port

Network expansion parameters

Cascading depthNetwork, linear, and star structure: any
Maximum conductor length (twisted pair)100 m

Supply voltage

Supply voltage120 V AC
220 V AC
Supply voltage range100 V AC ... 240 V AC (50/60 Hz)
Typical current consumption312 mA (100 V AC)
Max. current consumption0.4 A (maximum)
Inrush surge current23 A (200 µs @ 230 V AC)


Mounting typeRack mount, includes brackets
Type AXStand-alone
Net weight2730 g

Mechanical tests

Type of testShock in acc. with EN 60068-2-27/IEC 60068-2-27
Test result30g, 11 ms half-sine shock pulse
Type of testVibration resistance in acc. with EN 60068-2-6/IEC 60068-2-6
Test result5g, 10-150 Hz

Conformity with EMC directives

Developed in acc. with standardIEC 61000-6.2
Test standardEN 61000-4-2 (ESD)
Test resultCriterion B
Test standardEN 61000-4-3 (radiated noise immunity)
Test resultCriterion A
Test standardEN 61000-4-4 (EFT burst)
Test resultCriterion B
Test standardEN 61000-4-5 (surge)
Test resultCriterion B
Test standardEN 61000-4-6 (line noise immunity)
Test resultCriterion A
Test standardEN 61000-4-8 (electromagnetic fields)
Test resultCriterion A
Test standardEN 61000-4-11

PDF of Ethernet switch, 24 Ethernet ports on the front in RJ45 format, automat - PHOENIX CONTACT - FL SWITCH 1924 - 2891057

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