

Hirschmann SPIDER-SL-20-04T1S29999SY9HHHH Industrial Switch
Unique Product Description
The Hirschmann SPIDER-SL-20-04T1S29999SY9HHHH (Part Number: 942 132-009) is an entry-level, unmanaged 5-port Industrial Fast Ethernet switch from Belden’s SPIDER III Standard Line (SSL) series.
Featuring 4 × 10/100Base-TX RJ45 copper ports and 1 × 100Base-FX Single-Mode SC optical fiber uplink port, this compact switch extends Ethernet connectivity over distances of up to 30 km without signal degradation. Designed for plug-and-play installation in space-constrained enclosures, it operates silently using a fanless, IP30 plastic housing while maintaining minimal power consumption.
Product Advantages and Core Features
Long-Distance Fiber Link: Integrated 100Base-FX single-mode optical port (SC interface) supports reliable network links up to 30 km.
Ultra-Compact Footprint: Measuring just 26 mm × 102 mm × 79 mm, its slim housing conserves valuable space on control cabinet DIN rails.
Plug-and-Play Simplicity: Requires zero software configuration—features auto-negotiation, auto-crossing (MDI/MDI-X), and auto-polarity on all copper ports.
Low Power Consumption: Consumes a maximum of 2.4 W (100 mA @ 24 V DC), lowering energy usage and thermal output inside control cabinets.
High Operational Reliability: Rated with a Mean Time Between Failures (MTBF) exceeding 2.2 million hours.
Technical Specifications Overview
| Parameter | Technical Detail |
| Product Type | SPIDER III Standard Line (SSL20-4TX/1FX-SM) |
| Part Number (Order No.) | 942 132-009 |
| Switch Type | Unmanaged Store-and-Forward Fast Ethernet Switch |
| Copper Ports | 4 × RJ45 sockets (10/100 Mbit/s, Auto-MDI/MDI-X) |
| Fiber Port | 1 × 100Base-FX Single-Mode (SC connector, 1300 nm, 0–30 km link budget) |
| Operating Voltage | 12/24 V DC (9.6 V DC to 32 V DC input range) |
| Current / Power Draw | Max. 100 mA @ 24 V DC (~2.4 W / 8.3 BTU/h) |
| Dimensions (W × H × D) | 26 mm × 102 mm × 79 mm |
| Housing / Enclosure | IP30 plastic rating |
| Weight | ~120 g |
Application Cases
The SPIDER-SL-20-04T1S29999SY9HHHH is tailored for cost-sensitive, unmanaged field-level industrial networks:
Remote Sub-Panels & Machine Control: Connects field PLCs, HMIs, and drives inside remote control cabinets back to a central control room over a single-mode fiber trunk.
Building Automation & Security: Feeds data from IP cameras and access control units spread across large facilities or outdoor perimeters over long-distance optical links.
Renewable Energy (Solar/Wind Farms): Interconnects localized monitoring equipment in field combiner boxes across multi-kilometer sites where copper cabling would suffer from electromagnetic interference (EMI) or length limits.

Installation and Maintenance
Installation Procedure
Mounting: Snap the unit onto a standard 35 mm DIN rail (IEC 60715).
Wiring Power: Connect a 12/24 V DC power feed (9.6–32 V DC) to the 3-pin plug-in screw terminal block.
Cable Connections:
Plug Cat5e/Cat6 copper Ethernet cables into RJ45 ports 1 through 4.
Connect single-mode fiber cables (9/125 $mu$m) to the SC fiber connector port (observe TX/RX polarity).
Maintenance & Diagnostics
Status LEDs: Verify operational status via front panel LEDs:
P (Power): Green = Power supply connected and within 9.6–32 V DC tolerance.
Port Link/Data: Solid Green = Active network connection; Blinking = Active data transmission.
Maintenance: Fanless construction requires no scheduled physical maintenance. Periodically inspect terminal block connections and keep optical connectors clean with fiber-cleaning tools during cable reconnects.
Other Models in the SPIDER III Family
| Model Name | Part Number | Port Configuration | Fiber / Housing Notes |
| SPIDER-SL-20-05T1... | 942 132-001 | 5 × RJ45 Copper | All copper 10/100TX, no fiber uplink |
| SPIDER-SL-20-04T1M2... | 942 132-008 | 4 × RJ45 + 1 × Multi-Mode SC | Multi-mode fiber optical uplink (up to 5 km) |
| SPIDER-SL-20-08T1... | 942 132-002 | 8 × RJ45 Copper | 8-port Fast Ethernet all-copper switch |
| SPIDER-PL-20-04T1S2... | 942 141-009 | 4 × RJ45 + 1 × Single-Mode SC | Premium Line version with metal housing, wider temp range ($-40^circtext{C}$ to $+70^circtext{C}$), and approvals |
| User name | Member Level | Quantity | Specification | Purchase Date |
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