Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
Product Introduction
Industrial network downtime can interrupt communications between controllers, operator stations, engineering workstations, and other Ethernet-connected equipment. The Hirschmann MACH104-20TX-FR provides 24 Gigabit Ethernet ports in a managed industrial switching platform, combining high-density copper connectivity with four flexible copper/fiber combo ports. Its redundant AC power inputs support power-source redundancy, making it relevant to network cabinets where uninterrupted connectivity is a maintenance priority.
For replacement procurement, the exact suffix matters. The FR version has redundant power inputs; a visually similar MACH104 switch may have a different power configuration or feature set. Confirm the complete model and order number before installation.
MACH104-20TX-FR
MACH104-20TX-FR
MACH104-20TX-FR
MACH104-20TX-FR
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Hirschmann |
| Model | MACH104-20TX-FR |
| Order Number | 942 003-101 |
| Product Category | Managed Industrial Ethernet Switch |
| Total Ethernet Ports | 24 |
| Copper Ethernet Ports | 20 × 10/100/1000BASE-TX, RJ45 |
| Combo Ethernet Ports | 4 × Gigabit combo ports |
| Fiber Interface | Compatible 100/1000 Mbps SFP modules in combo ports |
| Switching Architecture | Store-and-forward |
| Software | Layer 2 Professional |
| Power Input | 100–240 VAC |
| Rated Frequency | 50/60 Hz; published technical documentation specifies 47–63 Hz tolerance range |
| Power Redundancy | Two independent AC power inputs |
| Management Interfaces | V.24 serial interface and USB interface |
| Network Management | Web-based management, CLI, SNMP, and network diagnostics |
| Redundancy Protocols | Supports industrial network redundancy features including MRP and RSTP |
| Industrial Protocol Profiles | EtherNet/IP and PROFINET IO support |
| Operating Temperature | 0°C to +50°C |
| Relative Humidity | 10–95%, non-condensing |
| Dimensions (W × H × D) | Approximately 448 × 44 × 345 mm |
| Weight | Approximately 4.4 kg |
| Mounting | 19-inch rack/control cabinet |
| Protection Rating | IP20 |
Technical note: Fiber performance depends on the installed SFP transceiver and fiber type. Verify connector type, wavelength, fiber mode, transmission distance, and link budget before selecting replacement optics. The four combo ports are not four additional dedicated fiber ports; each combo port uses either its copper or fiber interface.
Field Application & Technical Pitfalls
Typical Applications
1) Industrial control network distribution
The MACH104-20TX-FR can connect multiple Ethernet-enabled control devices within an industrial network cabinet. Typical connected equipment may include PLCs, HMIs, engineering workstations, supervisory systems, and compatible network infrastructure.
2) Fiber uplinks between cabinets or network segments
The four combo ports allow compatible SFP transceivers to be used where fiber links are required. This can be useful for connections between cabinets, electrically separated areas, or network segments requiring longer transmission distances than copper cabling supports.
3) Managed networks requiring redundant power
The FR variant provides two independent AC power inputs. In the documented redundant arrangement, the standard supply normally powers the device, while the second supply can take over if the first supply fails. This does not distribute the load between both inputs, nor does it protect the switch against every possible hardware or network failure.
Three Replacement Pitfalls to Avoid
Pitfall 1: Ordering the non-redundant version
The MACH104-20TX-F and MACH104-20TX-FR have similar names and port configurations, but their power arrangements differ. If the original installation requires two AC inputs, confirm the FR suffix and order number before approving a substitute.
Pitfall 2: Assuming all SFP modules are interchangeable
A physically compatible transceiver may still be unsuitable because of differences in wavelength, fiber mode, link distance, connector type, or supported module specifications. Check both ends of the link and verify the transceiver requirements before commissioning.
Pitfall 3: Replacing the switch without reviewing its configuration
A managed switch may contain VLAN assignments, ring-redundancy settings, port priorities, access controls, SNMP settings, and other configuration parameters. A replacement that powers up successfully can still disrupt communications if its configuration differs from the original.
Field lesson: Consider a maintenance team replacing a failed switch during a planned shutdown. The new unit has the correct port count, but the original switch’s VLAN and redundancy settings were not recorded. Once connected, some devices become unreachable even though the port LEDs appear normal. Preserving the original configuration and verifying network topology before replacement can prevent this avoidable commissioning delay.
Quality Control (QC) SOP & Transparency
For the -20TX-FR, inspection should verify the hardware identity, power configuration, physical condition, and suitability for the existing network.
- Model and order-number verification: Check the nameplate for -20TX-FR and order number 942 003-101.
- Physical inspection: Examine the enclosure, RJ45 ports, combo-port interfaces, power connectors, and mounting points for damage, corrosion, or signs of unauthorized repair.
- Power-input inspection: Confirm that both redundant AC input connections are present and physically intact.
- Functional verification: Where suitable equipment is available, check startup behavior, power-status indicators, port-link indicators, management access, and basic switching operation. A full network validation requires an appropriate test setup and configuration.
- Configuration review: Where required and supported, verify firmware information and available configuration data against the customer’s installation requirements.
- Final QA and packing: Reconfirm the model and physical condition before protective packing and shipment.
Supply and service information
- Warranty: 12 months, subject to order confirmation.
- Condition: New Original, New Surplus, or Refurbished, as stated in the quotation.
- Inspection support: Photos or video inspection can be arranged where available.
- Documentation: Available manuals and configuration information can be checked against the supplied model.
- Lead time: Confirmed against actual stock status and order requirements.
Frequently Asked Questions
Q1: What is SCHMANN ?
It is a managed 24-port Gigabit Industrial Ethernet switch with 20 copper RJ45 ports, four copper/fiber combo ports, and redundant AC power inputs.
Q2: What is the difference betweX-F and ?
The key difference is the power arrangement. The FR variant supports two independent AC power inputs for redundancy, while the standard F variant has a different power-input configuration. Confirm the full suffix when replacing an installed unit.
oes the support fiber-optic connections?
Yes. Four Gigabit combo ports can use compatible SFP fiber transceivers or their alternative copper interfaces. The appropriate transceiver depends on the required speed, fiber type, wavelength, and transmission distance.
Q4: Does the switch support industrial network redundancy?
The platform supports industrial network redundancy features, including Media Redundancy Protocol (MRP) and Rapid Spanning Tree Protocol (RSTP). The actual topology and operating mode depend on the configuration and connected network equipment.
Q5: Can I replace the switch without changing the network configuration?
Only if the replacement has a compatible configuration and the required features are available. VLANs, port assignments, redundancy settings, management addresses, and security settings should be reviewed before commissioning.
Is the a PoE switch?
The should not be confused with PoE-spMACH104 variants. If the connected devices require power over Ethernet, verify the exact model and PoE requirements before selecting a replacement.
Q7: What information should I provide for a quotation?
Provide the complete model number, required quantity, preferred condition, delivery destination, and any available nameplate photos. For a replacement project, also specify the required fiber interfaces, power arrangement, and whether the original network configuration must be preserved.
