HIRSCHMANN RS20-1600T1T1SDAUHH industrial switch
Product Overview
The Hirschmann RS20-1600T1T1SDAUHH (Part Number / Order No.: 943 434-047) is a 16-port Unmanaged Industrial Fast Ethernet DIN-Rail Switch from Belden’s OpenRail RS20 series. It features an all-copper RJ45 configuration (16 × 10/100Base-TX ports), delivering dependable, high-density local connectivity for control cabinets without the need for fiber optics.
Designed for zero-configuration, plug-and-play operation in industrial environments, this switch combines fanless passive cooling, redundant dual power inputs, and an integrated fault relay to maintain high uptime across field-level automation networks.
Technical Parameter List
| Parameter | Specification Details |
| Product Model | RS20-1600T1T1SDAUHH |
| Part / Order Number | 943 434-047 |
| Switch Type | Unmanaged Store-and-Forward Fast Ethernet Switch |
| Total Port Count | 16 Ports (All Copper RJ45) |
| Port Configuration | 2 × Uplink 10/100Base-TX RJ45 + 14 × Standard 10/100Base-TX RJ45 |
| Cable / Line Specs | Auto-crossing (Auto-MDI/MDI-X), Auto-negotiation, Auto-polarity |
| Transmission Distance | 0 to 100 meters per RJ45 copper segment |
| Operating Voltage | Dual Redundant 12/24/48 V DC (9.6–60 V DC) & 24 V AC (18–30 V AC) |
| Current Draw | 392 mA @ 24 V DC / 196 mA @ 48 V DC (~32.1 BTU/h heat dissipation) |
| Interfaces / Terminals | 1 × 6-pin removable plug-in terminal block (Power & Signal Contact) |
| Housing / Enclosure | IP20 rated compact plastic enclosure |
| Dimensions (W × H × D) | 110 mm × 131 mm × 111 mm |
| Weight | ~600 g |
| MTBF | 45.4 Years (MIL-HDBK-217F) |
Product Features / Core Advantages
High-Density All-Copper Switching: 16 Fast Ethernet ports in a single compact DIN-rail footprint, making it ideal for large cabinet setups requiring extensive local device connections.
True Plug-and-Play Simplicity: Requires no software setup—automatically negotiates speed (10/100 Mbps), duplex mode, and cable pinouts (Auto-MDI/MDI-X) across all ports.
Redundant Power & Alarm Relay: Features dual power supply inputs to prevent network outages from power source failures, alongside a dry contact signal relay that triggers local PLC alarms upon link loss or power failure.
RS20-1600T1T1SDAUHH
Fanless & Solid-State Reliability: Operates quietly without moving cooling parts, yielding an MTBF exceeding 45 years.
Model Classification & Ordering Code Breakdown
In the Hirschmann RS20 configurator matrix, the designation RS20-1600T1T1SDAUHH breaks down as follows:
RS20: OpenRail Fast Ethernet Compact Series.
1600: 16 Total Fast Ethernet Ports.
T1 / T1: Ports 1 and 2 (Uplink Ports) are Twisted Pair TX (RJ45) copper interfaces.
S: Standard Temperature Range ($0^\circ\text{C}$ to $+60^\circ\text{C}$).
D: Standard Power Supply (12/24/48 V DC & 24 V AC).
A: Standard Approvals (cUL 508 / cUL 1604).
U: Unmanaged Switch Firmware Tier.
HH: Standard Hardware Configuration & Standard Release.
Environmental Tolerance Conditions
| Environmental Standard | Rating / Compliance |
| Operating Temperature | $0^\circ\text{C}$ to $+60^\circ\text{C}$ ($32^\circ\text{F}$ to $140^\circ\text{F}$) |
| Storage / Transport Temp | $-40^\circ\text{C}$ to $+70^\circ\text{C}$ ($-40^\circ\text{F}$ to $158^\circ\text{F}$) |
| Relative Humidity | 10% to 95% (non-condensing) |
| Shock Resistance | IEC 60068-2-27 (15 g, 11 ms duration, 18 shocks) |
| Vibration Resistance | IEC 60068-2-6 (1 mm @ 2–13.2 Hz, 0.7g @ 13.2–100 Hz) |
| EMC Immunity | EN 61000-4-2 (ESD 6kV Contact / 8kV Air), EN 61000-4-3 (10 V/m Radiated) |
| Safety Certifications | cUL 508 (Industrial Control), cUL 1604 Class 1 Div 2 (Hazardous Locations) |
Installation Method
DIN-Rail Mounting: Hook the upper latch of the switch onto a standard 35 mm DIN rail (EN 50022/IEC 60715) and push the bottom of the housing toward the rail until the locking lever snaps into place.
Earth Grounding: Connect a functional protective grounding conductor (minimum 1.5 $\text{mm}^2$) to the grounding screw terminal on the switch bottom plate.
Power & Fault Relay Wiring: Wire redundant DC inputs (9.6–60 V DC) or 24 V AC power into the 6-pin removable terminal block. Connect the fault contact output to a PLC input or alarm light.
Network Cabling: Plug standard Cat5e or Cat6 twisted-pair Ethernet cables (up to 100 meters) into any of the 16 RJ45 ports.
Operating Instructions
Power Verification: Upon energizing the terminal block, check that the front panel power LEDs (P1 and P2) light up solid green.
Port Link Checking: Observe the LED indicators above each RJ45 port:
Link/Data LED: Solid green indicates a valid physical connection; flickering green indicates active frame transmission.
Speed LED: Displays port connection speed (10 Mbps vs. 100 Mbps).
Fault Diagnostics: If the red Fault/Error LED illuminates, verify that both power feeds are active and that none of the monitored network ports have lost their link.
Maintenance: Because the switch is unmanaged and fanless, no software configuration or routine physical maintenance is required—periodic inspections should focus on wire tightness and dust build-up.