Hirschmann RS20-0800T Ruggedized Managed Switch

Product Overview

Hirschmann RS20-0800T Ruggedized Managed Switch: Industrial Resilience for Harsh Environments

The Hirschmann RS20-0800T is an 8-port managed industrial Ethernet switch engineered for continuous, fault-tolerant operation in the most demanding automation environments. Designed and manufactured in Germany to Hirschmann’s exacting RS20 Series standards, this DIN-rail-mounted switch delivers deterministic network performance under conditions that would compromise commercial-grade equipment — including extreme temperatures, high humidity, pervasive dust, mechanical vibration, and intense electromagnetic interference (EMI).

In modern industrial facilities — from oil refineries and gas compression stations to steel mills, coal mines, and municipal water treatment plants — network reliability is not optional. A single dropped packet or link failure can cascade into unplanned downtime, safety incidents, or costly production losses. The RS20-0800T is purpose-built to eliminate that risk, providing the backbone connectivity that keeps PLCs, DCS controllers, remote I/O modules, variable frequency drives (VFDs), industrial power supplies, safety relay modules, communication gateways, and terminal bus modules operating in perfect synchrony.

Rugged Specifications Table

Comprehensive Protection Solutions

The RS20-0800T does not operate in isolation — it is the network spine that ties together an entire control architecture. In a typical heavy-industry control cabinet, this switch connects directly to a Siemens SIMATIC S7-300 or S7-400 PLC via its PROFINET interface, enabling real-time cyclic data exchange with sub-millisecond jitter. Distributed I/O racks — such as the Siemens ET 200M or ET 200SP remote I/O stations — rely on the RS20-0800T’s RSTP ring topology to maintain communication even if a cable segment is severed, recovering the network in under 300 milliseconds.

Variable frequency drives, including the Siemens SINAMICS G120 or S120 series, connect to the same Ethernet ring to receive speed references and report diagnostic data back to the SCADA layer. Industrial 24 V DC power supplies — such as the Hirschmann or Phoenix Contact QUINT series — feed the RS20-0800T through its redundant power input terminals, ensuring that a single PSU failure does not interrupt network operation. Safety relay modules and Pilz PNOZ or Siemens SIRIUS 3SK safety controllers transmit PROFIsafe telegrams across the same managed switch fabric, with QoS priority queuing guaranteeing that safety-critical frames are never delayed by bulk data traffic.

Communication gateways — including Moxa MGate MB3000 series Modbus-to-Ethernet converters — bridge legacy serial field devices into the modern Ethernet backbone managed by the RS20-0800T. Terminal bus modules and marshalling panels connect downstream sensors and actuators, while the switch’s VLAN segmentation isolates process control traffic from engineering workstation access, hardening the network against both accidental misconfiguration and deliberate intrusion. The result is a layered, defense-in-depth network architecture that meets IEC 62443 industrial cybersecurity recommendations.

Application in Critical Infrastructure

In oil and gas upstream and midstream facilities, the RS20-0800T is deployed in wellhead control panels and pipeline SCADA RTU cabinets where ambient temperatures routinely exceed 60 °C and explosive-atmosphere-adjacent enclosures demand zero unplanned reboots. Its -40 °C cold-start capability makes it equally suited to Arctic pipeline monitoring stations.

In underground mining operations, the switch withstands constant mechanical shock from blasting and heavy equipment, while its sealed DIN-rail form factor resists coal dust ingress when installed in IP54-rated junction boxes. The HIPER-Ring redundancy protocol ensures that a cable damaged by mining machinery triggers automatic failover in milliseconds — keeping conveyor belt PLCs and ventilation control systems online.

At thermal and hydroelectric power generation plants, the RS20-0800T integrates into IEC 61850 substation automation networks, connecting protection relays, bay controllers, and HMI workstations. Its SNMP v3 management interface allows the plant’s network operations center to monitor port statistics, detect link faults, and push firmware updates without interrupting live protection functions.

In municipal water and wastewater treatment facilities, the switch connects distributed pump station PLCs across fiber and copper segments, supporting the SCADA system’s continuous monitoring of flow rates, chemical dosing, and alarm states. Its wide-temperature operation ensures reliable performance in outdoor pump-house enclosures subject to seasonal temperature extremes.

For metallurgical and steel production lines, where induction furnaces and large motor drives generate severe conducted and radiated EMI, the RS20-0800T’s EN 61000-6-2 immunity rating provides the margin needed to maintain clean Ethernet communication between rolling mill PLCs, pyrometer interfaces, and quality-control vision systems — all without the packet loss or CRC errors that plague commercial switches in the same environment.

Security & Quality FAQ

Q1: What does the 12-month warranty cover, and how is a claim processed?
The 12-month warranty covers all manufacturing defects and functional failures under normal industrial operating conditions from the date of shipment. If a unit fails within the warranty period, contact us at [email protected] with your order number and a fault description. We will arrange advance replacement or repair and cover return freight for confirmed warranty cases. Units damaged by incorrect wiring, overvoltage beyond rated input, or physical impact are assessed individually.

Q2: How is each RS20-0800T tested before shipment?
Every unit undergoes a pre-shipment functional verification that includes power-on self-test, port link and traffic throughput check across all 8 ports, management interface access confirmation (Web GUI and SNMP), and visual inspection for physical integrity. Units sourced from authorized distribution channels are accompanied by original Hirschmann documentation where available. Test records are retained and can be provided on request for critical infrastructure procurement.

Q3: Is the RS20-0800T compatible with my existing Hirschmann RS20 or MACH series network?
Yes. The RS20-0800T is fully interoperable with other Hirschmann RS20 series switches and is backward-compatible with MACH 100, MACH 1000, and MACH 4000 series devices within the same HIPER-Ring or RSTP topology. It supports standard IEEE 802.1Q VLANs and 802.1w RSTP, ensuring seamless integration with third-party managed switches from Siemens SCALANCE, Moxa EDS, or Phoenix Contact FL SWITCH families in mixed-vendor architectures.

Q4: Can you guarantee long-term supply and support for ongoing maintenance and spare-parts programs?
Yes. TOPNLMS maintains dedicated stock of Hirschmann RS20 series components to support both emergency replacement and planned spare-parts programs. We can provide volume pricing for multi-unit orders, staged delivery schedules aligned with your maintenance windows, and advance procurement agreements to protect against lead-time risk. For critical infrastructure operators requiring guaranteed availability, contact us to discuss a framework supply arrangement.