Industrial Fiber Aggregation & Bulk Arrival Update | August 24, 2026

Answer first: The Hirschmann BRS20-8TX/2FX, complete product code BRS20-1000M2M2-STCY99HHSESXX.X.XX and order number 942170004, is a managed, fanless DIN-rail BOBCAT switch with eight 10/100BASE-TX RJ45 ports and two fixed 100BASE-FX multimode SC fiber ports. HONGKONG XIEYUAN TECH CO., LIMITED is supporting high-demand, project and bulk-order enquiries for this configuration and the wider Hirschmann BOBCAT range.

Industry Outlook: Compact Fiber Aggregation Moves Closer to the Machine

Industrial networks are becoming more distributed. Instead of routing every field device back to a large central cabinet, manufacturers are placing managed switches closer to production cells and connecting those cells over fiber. This reduces long copper runs, limits electromagnetic-interference exposure and creates clearer fault domains.

At the same time, many brownfield sites still depend on 100BASE-FX multimode SC infrastructure. The application traffic may be modest, but availability requirements are high. An eight-copper-plus-two-fiber architecture provides enough local density for PLCs, drives, HMIs, remote I/O and service devices while reserving two optical interfaces for a line, star or resilient ring backbone.

Our 2026 forecast is that this hybrid format will remain in demand for conveyor systems, water treatment, utilities, material handling and multi-building production sites. The key procurement risk is not bandwidth; it is media mismatch. Multimode SC, single-mode SC and SFP-slot variants can look similar in a list but require different cabling and optical planning.

Technical Profile: BRS20-8TX/2FX 942170004

Belden's official data sheet specifies ten network ports in total:

• Type: Hirschmann BRS20-8TX/2FX.

• Complete product code: BRS20-1000M2M2-STCY99HHSESXX.X.XX.

• Order number: 942170004.

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

• Fiber uplinks: 2 x fixed 100BASE-FX multimode SC.

• Copper reach: up to 100 m under the specified twisted-pair conditions.

• 50/125 µm multimode fiber: up to 5,000 m using the published 8 dB link-budget assumptions at 1300 nm.

• 62.5/125 µm multimode fiber: up to 4,000 m using the published 11 dB link-budget assumptions at 1300 nm.

• Power: two 12-24 VDC inputs; published consumption 8 W.

• Operating temperature: 0°C to +60°C for this standard variant.

• Construction: fanless DIN-rail design, PC-ABS housing, IP30.

• Local service: USB-C for management and device replacement.

Understanding BRS20-1000M2M2-STCY99HHSESXX.X.XX

The complete code contains the configuration logic that purchasing teams need. BRS20 identifies the BOBCAT Fast Ethernet platform. The 10 port arrangement combines eight copper connections with two optical interfaces. M2M2 identifies two fixed multimode 100BASE-FX SC ports, while STCY corresponds to the standard environmental and software selection associated with order number 942170004.

The distinction is operationally important. An S2S2 code denotes fixed single-mode SC ports, while Z6Z6 denotes SFP slots. A buyer should never approve a substitution based only on “8TX/2FX” wording without checking fiber mode, connector, temperature class and complete order code.

Why Two Fiber Ports Change the Topology

A single fiber port can connect a remote cell, but two fiber ports allow the switch to participate in a through-link or redundant topology. Depending on the project design, MRP, RSTP, HIPER-Ring, link backup and LACP can support recovery and resilience strategies. The eight copper ports then serve local devices while the two optical ports connect the cell to upstream and downstream cabinets.

This reduces the temptation to daisy-chain unmanaged switches inside a machine. It also gives operators clearer visibility into link state, topology and fault location. For critical systems, the redundancy protocol, recovery target and failure behavior should be validated during factory or site acceptance testing.

Multimode Fiber Budget: 4–5 km Requires Engineering

The published distance values assume specific fiber attenuation, modal bandwidth and reserve. A real route adds connector pairs, patch panels, splices, bends, contamination, repairs and aging margin. Engineers should calculate the total optical loss and compare it with measured results rather than treating route length alone as acceptance evidence.

Fiber core size must also be verified. Belden lists up to 5 km for 50/125 µm multimode fiber and up to 4 km for 62.5/125 µm multimode fiber under the stated conditions. Both link ends must use compatible 100BASE-FX multimode SC interfaces. Connector inspection and cleaning should be included in commissioning and preventive maintenance.

Management, Diagnostics and Industrial Security

The switch supports SNMP, LLDP, HTTPS, SSH, SFTP/SCP, VLAN, QoS, RMON, Syslog, port mirroring, copper cable testing and link-condition monitoring. These functions help teams determine whether a production interruption originates at a local copper device, the fiber backbone or the network configuration.

Belden's current data sheet also lists IEC 62443-4-2 Security Level 2 under industrial security. Secure operation still depends on system design: disable unused services, restrict management access, use current firmware, separate management traffic and integrate the switch into the site's account and change-control policies.

Hot-Selling Hybrid BOBCAT Configurations

These models and the wider BRS20, BRS30, BRS32, BRS40, BRS42, BRS50 and BRS52 configurations in our current BOBCAT program are currently hot-selling. Buyers can review the complete 94-configuration list in our Hirschmann BOBCAT bulk-arrival procurement index.

Bulk Arrival and Procurement Update

We are supporting stock-oriented and bulk-arrival enquiries for BRS20-8TX/2FX 942170004, including project quantities, replacement spares and mixed BOBCAT orders. Availability remains dynamic, so buyers should provide the required quantity, destination, delivery deadline and whether partial shipment is acceptable.

For the fastest and most accurate match, submit all three identifiers: BRS20-8TX/2FX, BRS20-1000M2M2-STCY99HHSESXX.X.XX and 942170004.

Buyer and Engineering Checklist

1. Confirm the exact 942170004 order number and M2M2 product code.

2. Verify eight copper ports plus two fixed multimode SC ports.

3. Identify 50/125 or 62.5/125 µm installed multimode fiber.

4. Calculate optical loss, connector count and maintenance margin.

5. Confirm 0°C to +60°C environmental suitability.

6. Validate redundancy, management and security requirements.

7. Provide quantity, destination and delivery schedule for live availability.

Frequently Asked Questions

Does BRS20-8TX/2FX 942170004 require SFP modules?

No. It has two fixed 100BASE-FX multimode SC interfaces. This reduces transceiver selection work but also means the optical media cannot be changed by installing another SFP.

Is 942170004 a Gigabit switch?

No. Its eight copper ports and two fixed fiber ports operate at Fast Ethernet rates. Buyers requiring Gigabit access or uplinks should evaluate BRS30, BRS40 or BRS50 configurations.

What is the difference between 942170004 and 942170006?

942170004 uses fixed multimode SC fiber ports. The related 942170006 BRS20-8TX/2FX-SM uses fixed single-mode SC ports.

Is BRS20-8TX/2FX currently hot-selling?

Yes. BRS20-8TX/2FX 942170004 and the related hybrid BOBCAT configurations above are currently hot-selling and supported for quotation and delivery coordination.

Request Availability, Technical Documents or a Quotation

For BRS20-8TX/2FX 942170004 stock confirmation, bulk pricing, data sheets or configuration review, contact:

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

Related resource: Hirschmann industrial networking products.

Technical reference: Core specifications were checked against Belden's official BRS20-8TX/2FX data sheet. Final optical design, configuration, firmware, certification and delivery suitability must be confirmed for the destination project.