 |
 |
 |
 |
Industrial Network Connectivity and ControlThe Hirschmann BRS20-24TX (part number 942170-083) is a 24-port managed industrial Fast Ethernet switch for DIN rail installation. Its 24 RJ45 ports provide 10/100BASE-TX connectivity for industrial Ethernet networks. Part of the BRS BOBCAT series, this switch supports real-time communication using Time-Sensitive Networking (TSN) and combines a fanless design with a PC-ABS housing.
Managed switching, network redundancy, and diagnostic functions help network administrators organize traffic and maintain visibility across connected equipment. VLANs and Quality of Service (QoS) support traffic segmentation and prioritization, while ring redundancy and link backup options support network continuity. The switch operates from two 12–24 V DC power inputs and carries a five-year manufacturer’s guarantee.
Key Features & Benefits
- Traffic management: VLANs, QoS, queue shaping, and multicast controls support organized industrial network traffic.
- Network redundancy: HIPER-Ring, Media Redundancy Protocol (MRP), RSTP, and link aggregation provide options for resilient network design.
- Secure administration: HTTPS, SSHv2, SNMPv3, access controls, and configurable user policies support controlled device management.
- Fault investigation: Port mirroring, copper cable testing, Syslog, and link monitoring help identify network issues.
- Industrial integration: EtherNet/IP, PROFINET, Modbus TCP, and IEC 61850 profiles support integration with industrial automation systems.
- Configuration and replacement: USB-C local management, configuration backups, and automatic rollback support commissioning and service work.
Application Notes
Use the BRS20-24TX to connect Ethernet-enabled equipment in machine control panels and plant automation networks. Its managed functions are useful where multiple devices share a network and maintenance teams need traffic prioritization, port-level diagnostics, and controlled access. The IP30 enclosure and operating temperature range of 0 °C to +60 °C provide clear criteria for selecting an appropriate installation location.
Installation & Commissioning
Confirm the available DIN rail space, supply voltage, ambient conditions, and Ethernet cable lengths before installation. Plan the VLAN, redundancy, and time synchronization settings around the network requirements. Refer to the BOBCAT series manual for mounting, electrical connections, commissioning, and maintenance instructions.
Technical Specifications
| Manufacturer | Hirschmann |
| Model | BRS20-24TX |
| Part number | 942170-083 |
| Series | BRS BOBCAT |
| Switch type | Managed industrial Fast Ethernet switch |
| Ports | 24 × 10/100BASE-TX RJ45 |
| Housing | PC-ABS |
| Cooling | Fanless |
| Operating voltage | 2 × 12–24 V DC |
| Power consumption | 16 W |
| Heat dissipation | 55 BTU/h |
| Twisted-pair cable length | 0–100 m |
| Network topology | Line and star; unrestricted cascading |
| Manufacturer’s guarantee | 5 years |
Interfaces
| Power supply/signaling contact | 1 plug-in terminal block, 6-pin |
| Digital Input | 1 plug-in terminal block, 2-pin |
| Local management and device replacement | USB-C |
Ambient Conditions
| Operating temperature | 0 °C to +60 °C (32 °F to 140 °F) |
| Storage / transport temperature | −40 °C to +70 °C (−40 °F to 158 °F) |
| Relative humidity | 1%–95%, non-condensing |
Mechanical Construction
| Dimensions (W × H × D) | 108.8 × 137.5 × 103.5 mm (4.28 × 5.41 × 4.07 in.) |
| Mounting | DIN rail |
| Weight | 1,160 g |
| Protection class | IP30 |
Software & Network Capabilities
SwitchingIndependent VLAN Learning, Fast Aging, Static Unicast/Multicast Address Entries, QoS / Port Prioritization (802.1D/p), TOS/DSCP Prioritization, Interface Trust Mode, CoS Queue Management, Queue-Shaping / Max. Queue Bandwidth, Flow Control (802.3X), Egress Interface Shaping, Ingress Storm Protection, Jumbo Frames, VLAN (802.1Q), GARP VLAN Registration Protocol (GVRP), Voice VLAN, GARP Multicast Registration Protocol (GMRP), IGMP Snooping/Querier per VLAN (v1/v2/v3), Unknown Multicast Filtering, Multiple VLAN Registration Protocol (MVRP), Multiple MAC Registration Protocol (MMRP), Multiple Registration Protocol (MRP).
RedundancyHIPER-Ring (Ring Switch), Link Aggregation with LACP, Link Backup, Media Redundancy Protocol (MRP) (IEC62439-2), Redundant Network Coupling, RSTP 802.1D-2004 (IEC62439-1), RSTP Guards.
ManagementDual Software Image Support, TFTP, SFTP, SCP, LLDP (802.1AB), LLDP-MED, SSHv2, HTTP, HTTPS, Traps, SNMP v1/v2/v3, Telnet, IPv6 Management, OPC UA Server.
DiagnosticsManagement Address Conflict Detection, MAC Notification, Signal Contact, Device Status Indication, TCPDump, LEDs, Syslog, Persistent Logging on ACA, Port Monitoring with Auto-Disable, Link Flap Detection, Overload Detection, Duplex Mismatch Detection, Link Speed and Duplex Monitoring, RMON (1,2,3,9), Port Mirroring 1:1, Port Mirroring 8:1, Port Mirroring N:1, Port Mirroring N:2, System Information, Self-Tests on Cold Start, Copper Cable Test, SFP Management, Configuration Check Dialog, Switch Dump.
ConfigurationAutomatic Configuration Undo (roll-back), Configuration Fingerprint, Text-based Configuration File (XML), Backup config on a remote server when saving, Clear config but keep IP settings, BOOTP/DHCP Client with Auto-Configuration, DHCP Server: per Port, DHCP Server: Pools per VLAN, Auto-Configuration Adapter ACA21/22 (USB), HiDiscovery, USB-C Management support, Command Line Interface (CLI), CLI Scripting, CLI script handling over ENVM at boot, Full-featured MIB Support, Context-sensitive Help, HTML5-based Management.
SecurityISASecure CSA / IEC 62443-4-2 certified, MAC-based Port Security, Port-based Access Control with 802.1X, Guest/unauthenticated VLAN, Integrated Authentication Server (IAS), RADIUS VLAN Assignment, Denial-of-Service Prevention, DoS Prevention Drop Counter, VLAN-based ACL, Ingress VLAN-based ACL, Basic ACL, Access to Management restricted by VLAN, Device Security Indication, Audit Trail, CLI Logging, HTTPS Certificate Management, Restricted Management Access, Appropriate Use Banner, Configurable Password Policy, Configurable Number of Login Attempts, SNMP Logging, Multiple Privilege Levels, Local User Management, Remote Authentication via RADIUS, User Account Locking, Password change on first login.
Industrial ProfilesEtherNet/IP Protocol, IEC61850 Protocol (MMS Server, Switch Model), Modbus TCP, PROFINET Protocol.
Time SynchronizationPTPv2 Transparent Clock two-step, PTPv2 Boundary Clock, boundary clock with up to 8 synchronizations/s , 802.1AS, Buffered Real Time Clock, SNTP Client, SNTP Server.
MiscellaneousDigital IO Management, Manual Cable Crossing, Port Power Down.
Mechanical Stability
| Shock: IEC 60068-2-27 | 15 g, 11 ms duration |
| Vibration: IEC 60068-2-6 | 5–8.4 Hz at 3.5 mm amplitude; 2–13.2 Hz at 1 mm amplitude; 8.4–200 Hz at 1 g; 13.2–100 Hz at 0.7 g |
EMC Interference Immunity
| EN 61000-4-2 electrostatic discharge (ESD) | 6 kV contact discharge, 8 kV air discharge |
| EN 61000-4-3 electromagnetic field | 10 V/m (80–2000 MHz); 5 V/m (2000–2700 MHz); 3 V/m (5100–6000 MHz) |
| EN 61000-4-4 fast transients (burst) | 2 kV power line, 2 kV data line |
| EN 61000-4-5 surge voltage | power line: 2 kV (line/earth) and 1 kV (line/line); data line: 2 kV |
| EN 61000-4-6 conducted immunity | 10 V (150 kHz–80 MHz) |
EMC Emissions
| FCC CFR 47 Part 15 | Class A |
| EN 55032 | Class A |
Approvals
| Industrial control equipment safety | cUL 61010 |
| Standards and markings | CE, FCC, EN 61131, EN 62368-1 |
Scope of Delivery
The scope of delivery includes the switch, a terminal block for the supply voltage and signaling contact, and a safety and general information sheet.
|
|
 |
 |
 |
 |

|