Engineering & Procurement Update | August 11, 2026

Control-panel builders are under pressure to add faster fiber uplinks without giving up DIN-rail space or increasing cabinet power demand. That requirement is bringing renewed attention to compact managed switches that support both conventional Gigabit copper devices and 2.5 Gigabit-capable optical uplinks. The Hirschmann BRS50-00122Q2Q-ETCZ99HHSEAXX.X.XX is a 12-port BOBCAT configuration designed for this type of access and aggregation role.

The full code is essential. Although Belden's generated data sheet displays 942170999 as the BOBCAT configurator part number, that number is shared across configurable BRS products. It does not by itself identify the 8-copper-plus-4-SFP port map or the compact PC-ABS housing of this exact variant.

Configuration Breakdown: BRS50-00122Q2Q-ETCZ99HHSEAXX.X.XX

The official generated technical data sheet specifies:

• Platform: Hirschmann BOBCAT BRS50 managed industrial Ethernet switch.

• Total ports: 12.

• Copper access: 8 x 10/100/1000BASE-TX RJ45 ports.

• Fiber uplinks: 4 x SFP slots supporting 100, 1000 or 2500 Mbit/s, arranged as two groups of two.

• Power input: two 12-24 VDC inputs through the power and signal-contact terminal block.

• Power consumption: 12 W.

• Operating temperature: -40°C to +70°C.

• Construction: PC-ABS housing, DIN-rail mounting, IP30 and conformal-coated PCB.

• Dimensions and weight: approximately 73 x 138 x 115 mm and 570 g.

• Additional interfaces: USB-C local management and device-replacement interface, plus one digital input.

A Compact Access Switch With Four Flexible Fiber Paths

The 8-RJ45 layout suits machine cells, remote panels, utilities and transportation cabinets where copper endpoints are limited but fiber topology options are important. Four SFP slots allow engineers to allocate separate uplinks for a redundant ring, line topology, supervisory network or future expansion.

Each optical slot can support 100 Mbit/s, 1 Gbit/s or 2.5 Gbit/s with an appropriate supported transceiver. This is useful when a project must connect an older fiber segment today but preserve a route to higher backbone bandwidth later. The SFP module remains a separate selection: fiber type, reach, connector, speed and environmental rating must match the installed link.

Why This Variant Is Not Simply a Smaller 24-Port Switch

The port count is the most visible difference from BRS50-00242Q2Q, but the mechanical and power characteristics also change. This 12-port version uses a 73 mm-wide PC-ABS enclosure, weighs about 570 g and consumes 12 W. The 24-port ETDZ configuration uses a much wider metal enclosure, weighs approximately 1.62 kg and consumes 20 W.

For cabinet upgrades, those differences affect rail space, heat calculation, cable routing and mechanical loading. A project that needs only eight local copper devices may gain useful panel space by selecting the compact ETCZ variant, while higher-density cells may justify the larger ETDZ version.

Advanced Management and Industrial Redundancy

The HHSEA configuration corresponds to the advanced managed feature set described in the generated data sheet. Capabilities include VLAN and QoS functions, IGMP snooping and querying, link aggregation, RSTP, MSTP, MRP, HIPER-Ring, SNMP, secure management, persistent logging, SFP management and OPC-UA server support.

TSN 802.1Qbv is also listed for designated interfaces. Engineers should validate the complete deterministic networking design, including time synchronization, endpoint support, traffic scheduling and HiOS configuration. Buying a TSN-capable switch is only one part of implementing a time-aware industrial network.

How to Use the 942170999 Reference Correctly

Belden identifies 942170999 as the configurator part number in the generated data sheet. It is a useful family-level search reference, but it is not a unique substitute for BRS50-00122Q2Q-ETCZ99HHSEAXX.X.XX.

Purchase orders and replacement records should retain the complete product code. The quotation should confirm the port map, enclosure, temperature class, coating, software level and approval package. When only 942170999 appears in an enquiry, the supplier should request the full label or configuration data sheet before proposing an equivalent.

Commissioning Priorities

Before installation, confirm the redundant DC feeds, signal contact, grounding, DIN-rail clearances and SFP compatibility. Export the existing switch configuration where possible and document VLANs, ring roles, link aggregation, multicast filtering and management addresses.

After replacement, test both power paths, copper and fiber links, failover behavior, alarm reporting and remote management. Firmware and configuration files should be controlled as part of the site's network change procedure, especially when the switch participates in an MRP or HIPER-Ring topology.

Current Supply Chain Availability

HONGKONG XIEYUAN TECH CO., LIMITED is supporting enquiries for BRS50-00122Q2Q-ETCZ99HHSEAXX.X.XX, BOBCAT configurator family 942170999 and related Hirschmann industrial Ethernet switches. Stock-oriented sourcing and fast-delivery coordination are available for compact-panel projects and installed-base replacements.

Availability depends on the exact product string, quantity, approvals, software level and required SFP modules. Configuration-label verification is recommended before accepting a substitute.

Buyer's Verification Checklist

1. Confirm 12 total ports: eight RJ45 plus four tri-speed SFP slots.

2. Use the complete BRS50-00122Q2Q-ETCZ99HHSEAXX.X.XX code.

3. Verify the compact PC-ABS housing, conformal coating and extended temperature range.

4. Allow for 12 W power consumption and dual 12-24 VDC inputs.

5. Select supported SFP modules for the required speed and fiber link.

6. Review HiOS, redundancy, VLAN and TSN settings before migration.

Request Technical Documentation, Availability or a Quotation

For a generated data sheet, stock confirmation, configuration comparison or quotation, contact:

Email: becky@hkxytech.com
Mobile / WhatsApp / WeChat: +86 15972186287

Related resource: Hirschmann industrial networking products.

Technical reference: Port map, power, environmental and management information was checked against the Belden official generated data sheet for BRS50-00122Q2Q-ETCZ99HHSEAXX.X.XX and the current Hirschmann BRS family installation manual. Final configuration and certification suitability must be confirmed for the destination project.