HIRSCHMANN MM3-4FXM4 – 4-Port Multimode Fiber Optic Media Module | MICE / RS2 / RS4 Platform
Engineering Background
The HIRSCHMANN MM3-4FXM4 is a plug-in media module designed for the HIRSCHMANN MICE, RS2, and RS4 managed industrial Ethernet switch families. It extends the base switch chassis with four additional 100 Mbps multimode fiber optic ports (100BASE-FX), enabling long-distance, EMI-immune network segments in demanding industrial environments. As a genuine OEM expansion module, it integrates seamlessly with the host switch’s management plane — no additional configuration layer required.
Product Positioning
Targeted at automation engineers and network architects who require deterministic, high-availability fiber connectivity within existing HIRSCHMANN switch infrastructure. The MM3-4FXM4 is the preferred choice when copper-based segments are insufficient due to distance constraints (>100 m), ground loop risks, or high electromagnetic interference from drives, motors, or high-voltage switchgear.
Complete Technical Specifications
- Part Number: MM3-4FXM4
- Manufacturer: HIRSCHMANN (Belden brand)
- Module Type: Plug-in media module (not a standalone device)
- Compatible Platforms: HIRSCHMANN MICE, RS2, RS4 managed switch series
- Number of Ports: 4 × 100BASE-FX fiber optic ports
- Fiber Type: Multimode (MM)
- Connector Type: SC duplex
- Data Rate: 100 Mbps (Fast Ethernet)
- Wavelength: 1300 nm
- Max. Transmission Distance: Up to 4 km (multimode, 62.5/125 µm fiber)
- Operating Temperature: -10 °C to +60 °C
- Storage Temperature: -40 °C to +70 °C
- Relative Humidity: 10 % to 95 % (non-condensing)
- Power Supply: Powered via host switch backplane (no external PSU required)
- Dimensions (W × H × D): Module form factor per MICE/RS2/RS4 slot specification
- Weight: Approx. 180 g
- Certifications: CE, UL (subject to host switch assembly)
- Standards Compliance: IEEE 802.3u (100BASE-FX)
- MTBF: >200,000 hours (typical, per Belden/HIRSCHMANN reliability data)
Proven Application Environments
- Automotive Manufacturing: Backbone fiber rings in body-shop and paint-shop automation cells where VFD noise is pervasive.
- Oil & Gas / Petrochemical: Long-distance fiber runs between control rooms and remote I/O panels exceeding copper distance limits.
- Power Utilities & Substations: Galvanically isolated fiber links that eliminate ground-loop interference between HV and LV domains.
- Water Treatment & Pumping Stations: Outdoor cabinet installations requiring wide temperature tolerance and moisture resistance.
- Railway & Transportation Infrastructure: Trackside switch cabinets with strict EMC requirements and vibration exposure.
- Discrete Manufacturing / Machine Building: Fiber uplinks from machine-level MICE switches to plant-level backbone switches.
Engineering Advantages
- Native Platform Integration: Recognized by the host switch OS as a native port — full SNMP/RMON visibility, VLAN assignment, and RSTP/MRP participation without additional drivers.
- EMI Immunity: Fiber optic medium is inherently immune to electromagnetic interference, eliminating packet errors in high-noise environments.
- Galvanic Isolation: Optical link provides complete electrical isolation between network segments, protecting equipment from ground potential differences.
- Extended Reach: 4 km multimode range far exceeds the 100 m limit of copper Fast Ethernet, enabling distributed topology designs.
- Hot-Swap Capable: Module can be inserted/removed without powering down the host switch (verify with specific host switch firmware version).
- Deterministic Latency: Store-and-forward switching with consistent, bounded latency suitable for time-sensitive PROFINET and EtherNet/IP traffic.
- Compact Slot Footprint: Single slot expansion preserves chassis space for additional copper or fiber modules.
System Architecture & Signal Flow
The MM3-4FXM4 inserts into a dedicated expansion slot on the MICE, RS2, or RS4 switch chassis. The module interfaces directly with the switch’s internal switching fabric via the backplane connector — all four fiber ports participate in the same switching domain as the base copper ports. Optical signals are received via SC duplex connectors, converted to electrical signals by the onboard transceiver, and forwarded to the switch fabric at wire speed. The management CPU of the host switch polls the module for port statistics, link state, and error counters via the internal management bus, making all four ports fully visible in the switch’s web GUI, CLI, and SNMP MIB.
Typical topology: Field-level MICE switch (copper ports to PLCs/I/O) → MM3-4FXM4 fiber uplink → plant backbone switch → SCADA/DCS server.
Sourcing & Quality Verification
- Origin: Genuine HIRSCHMANN (Belden) OEM hardware — not aftermarket or clone.
- Condition: New-in-box (NIB) or tested surplus stock clearly stated per listing.
- Traceability: Each unit ships with original manufacturer labeling and date code visible.
- Pre-shipment Testing: All modules are powered-on tested for link establishment and port-level diagnostics prior to dispatch.
- Packaging: ESD-safe anti-static bag + foam-lined carton; double-boxed for international shipments.
- Warranty: 90-day Konmask operational warranty; DOA replacement within 7 business days.
Procurement Process
- Step 1 — Inquiry: Contact [email protected] or WhatsApp +0086 19859288691 with your required quantity and delivery timeline.
- Step 2 — Quotation: Receive a formal proforma invoice (PI) within 1 business day, including unit price, shipping cost, and lead time.
- Step 3 — Payment: T/T bank transfer, PayPal, or trade-platform escrow accepted. Net-30 available for verified B2B accounts.
- Step 4 — Dispatch: Orders ship within 2–5 business days via DHL Express, FedEx, or UPS with full tracking.
- Step 5 — After-Sales: Technical support available post-delivery for integration questions and compatibility verification.
Technical FAQ
Q: Is the MM3-4FXM4 compatible with the HIRSCHMANN MICE2 series?
A: The MM3-4FXM4 is designed for the original MICE, RS2, and RS4 platforms. Compatibility with MICE2 depends on chassis slot specification — please confirm your chassis model before ordering.
Q: Can I use single-mode fiber with this module?
A: No. The MM3-4FXM4 is a multimode-only module (1300 nm, 62.5/125 µm or 50/125 µm OM2 fiber). For single-mode fiber runs, the MM3-4FXS4 or equivalent SM variant is required.
Q: What is the maximum fiber cable length?
A: Up to 4 km on 62.5/125 µm multimode fiber at 100 Mbps. Actual reach depends on fiber quality, connector cleanliness, and splice losses.
Q: Does this module support MRP (Media Redundancy Protocol)?
A: MRP is managed by the host switch firmware, not the module itself. If the host MICE/RS2/RS4 switch supports MRP, the MM3-4FXM4 ports participate in the MRP ring as standard switch ports.
Q: Is the module hot-swappable?
A: Hot-swap capability depends on the host switch firmware version. Consult the HIRSCHMANN MICE/RS2/RS4 release notes for your specific firmware to confirm.
Q: What fiber connector type is used?
A: SC duplex connectors (standard for 100BASE-FX industrial applications).
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