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Why this version earns its place in an industrial network

Many edge cabinets serve cameras, PLCs, HMIs, remote I/O and condition-monitoring devices locally, yet must reach a control room across a long or electrically noisy route. This model combines 8 × 10/100BASE-TX RJ45 ports with 2 × single-mode Fast Ethernet fiber ports. The optical paths can separate copper edge traffic from long-distance backbone runs while reducing exposure to electromagnetic interference and ground-potential differences.

Verified configuration snapshot

A failure pattern we see in urgent replacement projects

A line stops, the original switch label is photographed, and a buyer orders the first listing containing “BRS20” and “fiber.” The new unit arrives, but the existing plant uses multimode fiber, an incompatible connector or a different wavelength/link budget. The switch itself is healthy; the BOM was wrong. The cure is simple: match the full product code and audit the optical path before issuing the PO.

Five checks before purchase

1. Speed: confirm Fast Ethernet is acceptable at every copper and fiber link.

2. Fiber: confirm single-mode—not multimode—and record the installed fiber specification.

3. Optics: verify connector, wavelength, distance, attenuation and link budget at both ends.

4. Environment: use the EEC version where the cabinet temperature can extend beyond the standard range.

5. Identity: quote both 942170016 and the full code BRS20-1000S2S2-TTCY99HHSESXX.X.XX.

Fixed FX-SM or SFP slots?

Choose fixed single-mode FX when the optical standard is already defined and the goal is a repeatable, compact edge design. Choose an SFP-based BOBCAT variant when projects may change wavelength, reach or transceiver type, or when Gigabit capacity is required. Flexibility is valuable, but only when it solves a real lifecycle requirement.

Buyer FAQ

Is 942170016 a Gigabit switch?

No. Official Hirschmann selection literature identifies the copper and optical ports as Fast Ethernet.

What does FX-SM mean?

It identifies fixed Fast Ethernet ports intended for single-mode fiber. Confirm the complete optical specification of both link endpoints before ordering.

Does EEC make the link faster?

No. EEC identifies the extended environmental version; the listed operating range is −40°C to +70°C.

Can you quote other BOBCAT BRS variants?

Yes. The 94 variants below are currently hot-selling and actively requested. Availability and lead time are confirmed per exact product code.

94 hot-selling Hirschmann BOBCAT BRS models

Technical data referenced from official Hirschmann product-selection literature. Configuration, optical compatibility, certifications, price and delivery should be reconfirmed for the final order.