HIRSCHMANN OS20-001200T5T5T5- TBBZ999HHNE3S 08.1.00 industrial switch
The Hirschmann OS20-001200T5T5T5-TBBZ999HHNE3S 08.1.00 (historically part of the OCTOPUS family) is an ultra-rugged, IP67-rated managed Industrial Ethernet switch. Engineered specifically for harsh environments outside the safety of control cabinets, it completely eliminates the need for protective enclosures.
Featuring vibration-proof M12 connectors and a sealed housing, it is designed to operate reliably under extreme physical stress, wet conditions, and wide temperature swings.
Technical Parameter List
| Parameter | Specification | Description |
| Product Series | OS20 (OCTOPUS Series) | IP67-rated managed Fast Ethernet switch |
| Port Density | 12 Ports Total | $12 \times 10/100\text{ Mbit/s}$ Fast Ethernet ports |
| Connector Type | M12 D-Coded | 4-pole, female, vibration-proof, threaded connectors |
| Uplink Ports | T5T5T5 Configuration | Triple copper Ethernet uplinks via M12 |
| Software Level | Professional (L2P) | Advanced filtering, VLANs, security, and redundancy |
| Housing Rating | IP67 / IP65 | Fully sealed against dust and water immersion |
| Operating Voltage | Dual Redundant Inputs | Standard nominal industrial DC voltage range |
| Firmware Release | v08.1.00 | Pre-loaded operating system version |
| Conformal Coating | Yes (E3 / Extended Protect) | Internal components chemically sealed against moisture |
The precise configuration of this switch is defined by its highly detailed product code structure:
Product Features & Core Advantages
Cabinet-Free Mounting (IP67): No cabinet needed. This switch can be bolted directly to machine frames, railway cars, or exterior walls, saving installation space and hardware costs.
Vibration-Proof M12 Connections: Standard RJ45 clips fail under mechanical vibration. The OS20’s threaded M12 connectors ensure gas-tight, locking physical connections that never shake loose.
Conformal Coated Internal PCBs: Treated with a specialty protective film, shielding internal circuits from condensation, micro-dust, salt spray, and corrosive atmospheres.
Advanced Redundancy Protocols: Supports MRP (Media Redundancy Protocol) and HIPER-Ring. Network recovery times are sub-80ms, ensuring automation processes keep running without interruption during a link failure.
Enterprise-Grade L2 Security: Outfitted with IEEE 802.1X port authentication, IP/MAC filtering, access control lists (ACLs), and secure HTTPS/SSH encryption.
Model Classification (OCTOPUS/OS Series)
Hirschmann’s IP67 portfolio divides into specialized subgroups depending on speed, PoE, and certification requirements:
OS20 (Standard Fast Ethernet): $10/100\text{ Mbps}$ ports, optimized for standard PLC communication and device networking.
OS30 (Gigabit Ethernet): Equipped with $1000\text{ Mbps}$ M12 ports for high-bandwidth uplinks, cameras, and data-heavy processing.
OCTOPUS PoE/PoE+ Series: Models designed to supply high-power Power over Ethernet directly to IP cameras, wireless access points, or badge scanners over a single M12 cable.
Transportation-Specific (Train/EN 50155): Specialized variants with specific fire protection and rolling stock approvals for rail mounting.
OS20-001200T5T5T5- TBBZ999HHNE3S 08.1.00
Environmental Tolerance Conditions
This switch is designed to thrive where standard hardware fails:
Operating Temperature: $-40\text{ °C}$ to $+70\text{ °C}$ cold-start and continuous operation.
Ingress Protection: IP67 (dust-tight and protected against water immersion up to 1 meter for 30 minutes).
Vibration Resistance: Certified to handle severe mechanical shock and vibration (IEC 60068-2-6 and IEC 60068-2-27 compliance).
Electromagnetic Compatibility (EMC): High immunity to electrostatic discharge (ESD), line surge, and magnetic fields typically found in heavy industrial environments.
Installation Method
Unlike cabinet-based switches, the OS20 features an integrated flat mounting flange.
1.Position and Screw Mount：Direct mounting。
Align the switch’s integrated mounting flanges on a flat, rigid surface. Secure using four heavy-duty M6 screws to ensure high vibration resistance.
2.Establish Functional Grounding：EMC protection。
Connect a low-impedance ground strap from the designated grounding terminal on the switch housing directly to the machine’s central ground point.
3.Wire M12 Power Inputs：Redundant 5-pin power。
Connect the dual DC power feeds to the 5-pin, A-coded M12 power plug. Screw the connector securely onto the switch interface to seal it.
4.Connect M12 D-Coded Ethernet Cables：Network connections。
Align and thread the 4-pin, D-coded M12 Ethernet patch cables into the ports. Ensure they are tightened completely to maintain the IP67 seal.
Operating Instructions
First-Time Configuration
Default IP Address: The switch is set to receive an IP via DHCP by default. If no DHCP server is present, configure a temporary static IP using the Hirschmann HiDiscovery software tool over the network.
Accessing the GUI: Enter the switch’s IP address into a secure web browser (HTTPS). Log in using the default credentials found on the product’s physical side-label.
Change Default Credentials: Upon initial login, you will be prompted to change the default admin password to secure the switch.
Diagnostic LED Indicators
| LED Label | State | Meaning |
| P1 / P2 | Green | Power supply feed 1 / feed 2 is active and within range. |
| FL (Fault) | Red | Internal system error or a designated link port has gone down. |
| RM (Ring Manager) | Green | The switch is successfully acting as the active Ring Manager for MRP. |
| Port LEDs (1-12) | Flashing Yellow | Link established; active RX/TX data transmission. |