Hirschmann Belden OCTOPUS OS20-002800T5T5T5-TBBY999GMSE3S Manageable industrial Ethernet switch
Hirschmann Belden OCTOPUS OS20-002800T5T5T5-TBBY999GMSE3S Datasheet & Technical Guide
The Hirschmann Belden OS20-002800T5T5T5-TBBY999GMSE3S (Order Code: 942 133-273 / 942 133-999-116) is a high-port-density, managed industrial Ethernet switch from the OCTOPUS OS20 family. Designed with an IP67/IP65 ingress protection rating and vibration-proof M12 connector interfaces, this switch provides reliable data communication directly on machinery, in transportation networks, and in cabinet-free extreme industrial environments.
1. Product Introduction / Overview
The OCTOPUS OS20 series is engineered to deliver reliable networking outside protected control cabinets. Featuring 28 Fast Ethernet ports equipped with 4-pin M12 D-coded female connectors, the OS20-002800T5T5T5-TBBY999GMSE3S provides robust data throughput while eliminating the need for protective electrical enclosures.
Operating on Hirschmann’s HiOS (Hirschmann Operating System) software, it offers enterprise-grade Layer 2 and Layer 3 routing capabilities, redundancy protocols, and extensive network management options (SNMP, Web GUI, CLI) tailored for mission-critical industrial automation.
2. Technical Parameter List
| Parameter | Specification |
| Brand / Manufacturer | Hirschmann (A Belden Brand) |
| Model Number | OS20-002800T5T5T5-TBBY999GMSE3S |
| Alternate ID / Part Number | 942 133-273 / 942 133-999-116 |
| Product Series | OCTOPUS OS20 |
| Total Port Count | 28 Ports |
| Port Types & Connectors | 28 × 10/100BASE-TX Fast Ethernet via M12 D-coded female sockets |
| Operating System / Software | HiOS Layer 3 / Layer 2 Managed |
| Power Supply | Dual redundant 24 V DC (18 V DC to 32 V DC) via M12 power connectors |
| Ingress Protection (IP Rating) | IP67 / IP65 (dust-tight and protected against powerful water jets / temporary immersion) |
| Housing Material | Heavy-duty die-cast zinc / aluminum housing |
| Mounting Options | Wall mounting / Panel mounting |
| Dimensions / Weight | Approx. 16.0 × 10.0 × 6.0 in; ~10 lbs (4.5 kg) |
3. Product Features / Core Advantages
High Port Density in IP67 Form Factor: Provides 28 individual M12 ports on a single compact housing, dramatically reducing wiring complexity across large production lines or train carriages.
Cabinet-Free Installation: IP67 water/dust protection and high mechanical resilience allow mounting directly on vehicles, machine frames, or outdoor structures without expensive NEMA/IP enclosures.
M12 Screw-Locking Security: M12 D-coded connectors ensure physical locking mechanisms that prevent accidental disconnections caused by heavy machine vibration or shock.
Ultra-Fast Network Redundancy: Supports Hirschmann’s MRP (Media Redundancy Protocol) and HIPER-Ring protocols to guarantee recovery times under 10 ms in ring topologies during cable faults.
Dual Power Redundancy: Features dual 24V DC inputs with reverse-polarity protection, preventing network downtime if one power channel fails.
4. Model Classification & Code Breakdown
The Hirschmann OCTOPUS model nomenclature specifies hardware configurations directly within the part code:
$$\text{OS20} – \underbrace{\text{002800}}_{\text{28 FX/TX Ports}} \underbrace{\text{T5T5T5}}_{\text{M12 D-Coded Connectors}} – \underbrace{\text{TBBY}}_{\text{24V DC Power / Approvals}} \underbrace{\text{999GMSE3S}}_{\text{HiOS Software Tier \& Customizations}}$$
OS20: OCTOPUS Fast Ethernet IP67 switch family.
002800: Configuration featuring 28 total Fast Ethernet interfaces.
T5T5T5: Twisted-pair copper media interfaces utilizing M12 4-pin D-coded socket connections.
TBBY: Dual 24V DC supply configuration with standard industrial safety approvals.
GMSE3S: HiOS Managed software suite including Layer 2/3 features, security policies, and diagnostic features.
5. Environmental Tolerance Conditions
| Environmental Attribute | Operating Range / Standard |
| Operating Temperature | -40°C to +70°C (-40°F to +158°F) |
| Storage Temperature | -40°C to +85°C (-40°F to +185°F) |
| Relative Humidity | 5% to 100% (condensing, fully protected by IP67 seal) |
| Vibration Resistance | IEC 60068-2-6 (5 Hz to 150 Hz, 1 mm amplitude / 3 g) |
| Shock Resistance | IEC 60068-2-27 (15 g, 11 ms duration) |
| Transportation Compliance | EN 50155 / EN 50121-4 (railway rolling stock and trackside standards) |
6. Installation Method
Mounting Position: Secure the switch to a flat, solid surface or equipment wall using four M6 mounting bolts through the integrated flange holes on the switch chassis.
Grounding: Attach a heavy-duty grounding cable to the designated protective earth (PE) grounding screw on the housing to shield against electrostatic discharges (ESD) and electromagnetic interference (EMI).
Power Wiring: Connect dual 24V DC power feeds using 5-pin M12 A-coded power cables to the PWR1 and PWR2 ports. Hand-tighten and wrench-torque the M12 coupling nuts to 0.6 Nm.
Data Cables: Insert 4-pin M12 D-coded Ethernet cables into desired ports (1–28). Ensure all unused M12 ports are sealed with IP67 protective screw caps to maintain moisture resistance.
7. Operating Instructions & Maintenance
Initial Access & IP Assignment: Connect a computer to port 1 or via the M12 console port. Use Hirschmann HiDiscovery tool or BOOTP/DHCP to discover the device and assign an initial IP address.
Management Interface: Open a web browser to access the HiOS graphical interface or establish a Secure Shell (SSH) connection for command-line configuration.
Status LED Diagnostics:
STAT (Status): Solid Green = Switch operational; Solid Red = System error / hardware fault.
FAULT: Off = Normal operation; Solid Red = Power supply failure or ring redundancy fault.
Port LEDs: Solid Green = Link established; Flashing Green = Active data transmission; Off = No physical link detected.
Routine Maintenance: Periodically check that all M12 locking nuts and port protective caps remain torqued correctly to ensure the IP67 watertight seal remains intac