HIRSCHMANN RS20-1600M2M2SDAUHH Ethernet rack-mounted switch

Belden Hirschmann RS20-1600M2M2SDAUHH (also identified as RS201600M2M2SDAUHH) is a rugged,

industrial-grade unmanaged Fast Ethernet rail switch designed to deliver uncompromising data transmission stability in harsh ambient conditions.

Engineered for rapid deployment on standard DIN rails, this compact unit features a total of 16 ports tailored for versatile plant-floor layouts: 14 standard 10/100 BASE-TX RJ45 ports paired with 2 Multimode fiber uplink ports (100BASE-FX, MM-SC).

Housed in an IP20-rated, fanless enclosure, the RS20-1600M2M2SDAUHH leverages a Store-and-Forward switching architecture to ensure error-free packet delivery.

Its dual fiber optic uplinks permit long-distance, interference-free network connections extending up to 5.000 meters, making it an excellent solution for isolating ground loops and mitigating electromagnetic noise across expansive industrial environments.

Product Advantages and Features

High Port Density & Hybrid Connectivity: Integrates 14 copper ports with 2 multimode SC fiber ports within a compact footprint, streamlining field connections and long-distance backbone routing simultaneously.

Industrial-Grade Resilience: Completely fanless construction with high shock (15 g, 11 ms) and vibration resistance according to IEC 60068-2-6 guidelines, ensuring a massive MTBF rating of over 40 years.

Flexible Redundant Powering: Supports wide-range low-voltage inputs including 12/24/48 V DC (ranging from 9.6 V to 60 V DC) as well as 24 V AC, accommodating standard industrial power grids.

Certified for Hazardous Locations: Carries standard cUL 508 safety approval alongside cUL 1604 Class 1 Division 2 certification for safe deployment in potentially explosive environments.

Plug-and-Play Simplicity: As an unmanaged switch, it eliminates complex initial software programming, featuring auto-negotiation and auto-crossing for effortless installation.

Technical Specifications

Application Cases

Factory Automation & Discrete Manufacturing: Provides decentralized control networks for linking regional PLC drops, remote I/O blocks, and HMI panels back to the central control desk via high-speed fiber uplinks.

Oil & Gas Refining Environments: Thanks to its Class 1 Div 2 classification, this switch safely handles field instrumentation networking inside processing plants, where volatile gases or vapors may be present.

Wastewater Treatment Facilities: Ideal for linking distributed pump stations over several kilometers via multimode fiber infrastructure without risking lightning surge damage or grounding loop issues.

Installation and Maintenance

Installation Procedures

DIN Rail Mounting: Hook the top of the rear bracket onto a standard 35 mm DIN rail, then press the bottom of the switch forward until it audibly snaps lock into position.

Grounding: Connect a dedicated low-resistance ground wire to the grounding screw located on the enclosure housing to maximize EMC immunity.

Power Input Wiring: Insert the 6-pin terminal block plug. Wire dual redundant DC power supplies to ensure continuous operation if one circuit fails.

Interface Connection: Attach your copper RJ45 patch cables into the 14 standard ports and lock the SC multimode duplex fiber connectors into the Uplink ports.

Maintenance Tips

Passive Cooling Integrity: Ensure the top and bottom ventilation slots remain free from heavy dust accumulation to maintain natural convection airflow.

No Internal Consumables: The unit features a fully solid-state, fanless architecture. Internal structural fuses only trip upon severe hardware damage, requiring service or depot replacement rather than field modification.

Related Models & Same Series Variants

The Hirschmann RS20 OpenRail platform covers a highly adaptable selection of port counts, temperature extremes, and management features.

If your application calls for managed profiles, alternative connectors, or extended operating configurations, consider these options:

RS20-1600M2M2SDAEHH: A variant extending the lower operating temperature range for extreme environments (typically down to -40°C).

RS20-1600S2S2SDAUHH: Replaces the multimode fiber transceiver with Single-mode SC connections for long-distance transport.

RS20-0800M2M2SDAUHH: An 8-port equivalent within the same unmanaged family