Connect twelve Fast Ethernet devices with Hirschmann BRS20-12009999-STCY99HHSESXX.X.XX in a compact control cabinet
Hirschmann BRS20-12009999-STCY99HHSESXX.X.XX is the Hirschmann BOBCAT BRS20-12TX managed industrial switch, identified by part number 942170073. It provides twelve 10/100BASE-TX RJ45 ports in a fanless DIN rail design. This configuration combines a compact PC-ABS housing with managed switching functions for industrial Ethernet installations operating from 0 to +60 °C.
Hirschmann product reference image. The pictured model may differ from the specified configuration.
Technical specifications
| Brand | Hirschmann |
|---|---|
| Catalog Type | BRS20-12TX |
| Product code | BRS20-12009999-STCY99HHSESXX.X.XX |
| Part Number | 942170073 |
| Port Type and Quantity | 12 Ports in total: 12x 10/100BASE TX / RJ45 |
| Operating Voltage | 2 x 12 VDC ... 24 VDC |
| Power Consumption | 9 W |
| Operating temperature | 0-+60 °C |
| Housing | PC-ABS |
| Dimensions (WxHxD) | 73 mm x 138 mm x 115 mm |
| Weight | 600 g |
| Mount Type | DIN Rail |
| IP Protection Rating | IP30 |
Organize traffic at the machine level
VLAN support allows traffic to be separated into logical groups, while QoS and port prioritization help administrators assign different treatment to selected traffic classes. IGMP snooping and querier functions support multicast management. These features make the switch useful for a machine network that brings several Ethernet-connected devices together and needs more control than an unmanaged connection point provides. Each of the twelve physical ports is Fast Ethernet, so the bandwidth plan should use the documented 10/100 Mbit/s interface rates.
Tools for commissioning and maintenance
The management feature set includes HTTPS, SSHv2 and SNMP v1/v2/v3. Copper cable testing, port mirroring, Syslog and link speed monitoring give maintenance teams several ways to investigate a communication problem. USB-C is listed for local management and device replacement. HIPER-Ring, MRP and RSTP are available in the documented redundancy functions; select and configure the appropriate method for the topology used by the installation.
A compact footprint with defined power requirements
At 73 × 138 × 115 mm, the BRS20-12TX provides twelve copper connections in a relatively narrow housing. The listed power consumption is 9 W, and the operating supply specification is 2 × 12–24 V DC. The IP30 enclosure is intended for installation conditions that provide the required environmental protection. Allow room for the plug-in terminal block, Ethernet connectors and cable routing when laying out the cabinet.
Request the complete configuration
For a quotation, specify Hirschmann BRS20-12009999-STCY99HHSESXX.X.XX, part number 942170073 and the required quantity. Include the intended operating environment and any required delivery documentation. Keeping the complete order code on the inquiry helps distinguish this standard-temperature twelve-port version from other BOBCAT configurations.
From unmanaged connections to an organized machine network
A twelve-port switch can become the connection point for several parts of a machine or production cell. The practical benefit of a managed device is the ability to assign a deliberate network configuration rather than relying only on physical cabling. With Hirschmann BRS20-12009999-STCY99HHSESXX.X.XX, an engineer can plan VLAN membership, define management access and select monitoring functions for the installation. Start with an endpoint list that records each device, its address, its expected communication partners and its assigned port. Then identify any connection that carries traffic for several devices. This makes it easier to distinguish a port-count requirement from the capacity required on a shared link.
Prioritization and multicast controls are most useful when they reflect the actual traffic. A commissioning team should identify the relevant traffic classes before changing QoS settings, and check multicast group behavior before applying filtering. The documented functions provide configuration options; they do not remove the need to coordinate the connected controllers, operator stations and other Ethernet equipment. A simple port schedule and a saved configuration can make later troubleshooting more focused.
A practical commissioning sequence
Before the switch enters service, compare the full order code and part number with the equipment schedule, inspect the enclosure installation and confirm the specified DC supply. Assign the management address and establish the management access method required by the site. Next, configure the planned VLANs and redundancy settings, connect devices according to the port schedule and verify link speed and duplex status. For a ring design, test the intended redundancy behavior as part of the installation acceptance procedure rather than assuming that connecting a ring cable completes the configuration.
Record normal port status and retain a configuration backup after commissioning. If a fault occurs later, compare the affected port with that baseline, review event logs and use the documented cable-test or mirroring functions where appropriate. Include Hirschmann BRS20-12009999-STCY99HHSESXX.X.XX in the maintenance record so that the exact twelve-port configuration remains associated with the saved settings and installation drawing.
Manufacturer reference:
