Identify the exact EEC-HL four-port configuration with Hirschmann BRS20-04009999-TTCX99HHSESXX.X.XX
Hirschmann BRS20-04009999-TTCX99HHSESXX.X.XX is the full Product code for the Hirschmann BRS20-4TX-EEC-HL. This managed DIN rail switch has four 10/100BASE-TX RJ45 ports, a PC-ABS enclosure and a specified operating range of −40 to +70 °C. Its catalog record includes ISA12.12.01 under hazardous locations. Keep the exact configuration reference and applicable product documentation together when reviewing a project requirement; the suffix alone should not be used to infer every approval condition or installation detail.
Keep the approval reference tied to the exact device
The manufacturer catalog lists ISA12.12.01 for this configuration. Where a project requires approval documentation, request the current certificate and installation instructions for the offered device and compare them with the project specification. Do not transfer approval assumptions from a similar BRS20 model or from a shared product image. Recording the full code, part number and device label gives the engineering and purchasing teams a precise basis for that review without reducing it to the letters HL.

Hirschmann product reference image. The pictured model may differ from the specified configuration.
Technical specifications
| Brand | Hirschmann |
|---|---|
| Catalog Type | BRS20-4TX-EEC-HL |
| Product code | BRS20-04009999-TTCX99HHSESXX.X.XX |
| Part Number | 942170034 |
| Port Type and Quantity | 4 Ports in total: 4x 10/100BASE TX / RJ45 |
| Operating Voltage | 2 x 12 VDC ... 24 VDC |
| Power Consumption | 5 W |
| Operating temperature | −40 to +70 °C |
| Housing | PC-ABS |
| Dimensions (WxHxD) | 57 mm x 138 mm x 115 mm |
| Weight | 380 g |
| Mount Type | DIN Rail |
| IP Protection Rating | IP30 |
| Hazardous locations | ISA12.12.01 |
Temperature range and protection remain separate criteria
The extended −40 to +70 °C range addresses operating temperature, while the enclosure is rated IP30. Review both in the context of the finished cabinet, its exposure and the other installed components. The 5 W power consumption belongs in the electrical and thermal assessment. Check the conditions at the switch location during operation and starting periods. The presence of an approval entry in the catalog does not replace the need to follow the applicable manufacturer installation documentation.
Managed functions with a documented service procedure
The catalog includes HTTPS, SSHv2, SNMP v1/v2/v3 and LLDP for management, plus cable testing, link monitoring, Syslog and mirroring for diagnostics. Establish approved access procedures and retain a configuration backup before the device enters routine service. For a redundant design, the listed HIPER-Ring, MRP and RSTP functions should be considered with the participating equipment and the available ports. These networking functions describe capabilities; their inclusion does not establish that a particular topology or access policy has already been configured for the installation.
Four Fast Ethernet ports with a defined network role
Prepare a connection list that includes local endpoints, any uplink and any additional interconnection used by the chosen topology. All of these roles occupy ports from the four-port total. Assign management access and VLAN settings according to the site plan, then verify communication with the connected equipment. A compact installation benefits from the same configuration records as a larger network because a technician may otherwise have little context when one connection needs attention.
Keep documentation available through maintenance
Retain the applicable manufacturer documentation with the installed label, configuration backup and network drawing. Record normal link status after commissioning and identify the procedure used for authorized management access. If the installation changes, review the equipment requirements before updating the record. Associating those documents with Hirschmann BRS20-04009999-TTCX99HHSESXX.X.XX keeps the exact EEC-HL configuration visible to the people responsible for purchasing, acceptance and later maintenance.
A precise EEC-HL purchasing record
Provide Hirschmann BRS20-04009999-TTCX99HHSESXX.X.XX, part number 942170034, quantity and required documentation with the inquiry. Include any accessory requirements separately. The published dimensions are 57 × 138 × 115 mm and the weight is 380 g; allow for wiring and service access when planning the enclosure. For a replacement, retain the installed label and software information with the approved configuration. This keeps the environmental, mechanical and documented approval requirements associated with the same four-port device.
Configuration records complement product documentation
USB-C local management and XML-based configuration files are documented alongside automatic configuration undo and remote backup when saving. Establish how the approved settings are stored and how a technician checks that a file belongs to the installed EEC-HL device. Keep configuration records and applicable product documents associated with the same equipment reference. They serve different purposes, but both are needed for a well-documented replacement. Identify required service cables or adapters explicitly in the maintenance plan, and retain the accepted configuration after any authorized network changes. Keep a dated record of accepted configuration changes.
Manufacturer reference:
Hirschmann BRS20-4TX-EEC-HL — official configuration details
