HIRSCHMANN RS20-2400S4S4SDAEHC09.0.14 industrial switch

The Hirschmann RS20-2400S4S4SDAEHC09.0.14 is a highly reliable, hardened, managed Industrial Ethernet switch from Belden’s legendary OpenRail family. Known for its exceptional durability in harsh environments, this 24-port switch is specifically engineered to handle mission-critical industrial automation applications.

Below is a comprehensive technical breakdown of this exact model, highlighting its specifications, advantages, application scenarios, and key sister models.

Unique Product Description

To understand the exact physical and functional profile of the RS20-2400S4S4SDAEHC09.0.14. we can decode its precise part code nomenclature:

RS20: Compact OpenRail managed Layer 2 Ethernet switch.

2400: Features 24 Fast Ethernet ports (10/100 Mbps) with 0 Gigabit ports.

S4S4: Equipped with two Single-mode Fiber Optic uplink ports utilizing classic ST connectors (supporting 100 Mbit/s over long distances).

S: Standard operating temperature range of 0 °C to +60 °C.

D: Standard power supply/voltage range accepting 9.6 V DC to 60 V DC or 18 V AC to 30 V AC.

A: Standard industrial approvals package (including CE, UL 508. and ISA 12.12.01 Class 1 Div 2).

E: Features Hirschmann’s Enhanced (L2E) Software package, offering advanced diagnostics, VLANs, and ring redundancy.

H: Standard ruggedized plastic/metal housing designed for space-saving DIN-rail installation.

C: Includes Conformal Coating on the internal PCBs, providing extra protection against condensation, dust, and corrosive gases.

09.0.14: Specifies the pre-installed firmware release version.

Product Advantages and Features

Exceptional Port Density: Packing 24 Fast Ethernet RJ45 copper ports and 2 Single-mode ST fiber ports into a compact DIN-rail footprint, it maximizes physical space in cramped control cabinets.

Ultra-Fast Redundancy: Supports industry-standard redundancy protocols like MRP (Media Redundancy Protocol) and Hirschmann’s proprietary HIPER-Ring. This guarantees network recovery times of under 80ms in the event of a fiber or copper link failure.

High-Security Baseline: The Enhanced software provides robust security layers, including MAC-based port security, IEEE 802.1X multi-client authentication, IP/MAC filtering, and SNMP v3/SSH v2 encrypted management.

Environmental Resilience: With its fanless design and conformally coated PCBs, the switch thrives in high-vibration, high-EMI, and high-humidity environments.

Power Redundancy: Features dual power inputs and an integrated signal contact (fault relay) that triggers immediately if a power feed drops or a crucial port link is lost.

Application Cases

Because this model features single-mode fiber ports with ST connections and conformal coating, it is most commonly deployed in:

Substation & Power Distribution Automation: The single-mode fiber links allow communication over several miles between substations and control rooms, while the EMI-hardened design resists electrical noise.

Water and Wastewater Treatment Facilities: Corrosive gases and humidity are common in treatment plants. The conformal coating protects the delicate circuitry from premature failure.

Wind Farms and Solar Plants: Large physical footprints require the long-distance reach of single-mode fiber. The 24 copper ports on each switch easily aggregate local turbine control PLCs and sensors.

Transportation Infrastructure: Used alongside railways and in tunnels where vibration is constant and network uptime is critical for signaling and monitoring systems.

Other Models in the Same Series

The RS20 family is modular by design, allowing users to configure port counts, connector styles, and software levels:

Installation and Maintenance

Mounting: Designed for standard 35mm DIN-rail installation. Ensure the ventilation slits on the top and bottom are not covered, leaving at least 10 cm of clearance to maintain natural convective airflow (fanless cooling).

Redundant Power Wiring: Power should be wired to both terminal block inputs ($+24\text{ V}$ on P1 and P2) from separate power supplies to guarantee true power redundancy.

Grounding: Always ground the device using the dedicated ground screw on the bottom-left of the front panel to prevent electrostatic damage.

Zero-Config Replacement: The switch supports the Hirschmann ACA (Auto-Configuration Adapter) via its USB/V.24 port. If a switch needs replacement, simply plug the ACA into the new unit, and it will automatically load the exact configuration of the old switch—minimizing downtime.