HIRSCHMANN MM20-Z6Z6T1T1SZHH Technical Datasheet & SEO Guide
HIRSCHMANN MM20-Z6Z6T1T1SZHH Technical Datasheet & SEO Guide
Product Introduction / Overview
The Hirschmann MM20-Z6Z6T1T1SZHH is a 4-port Fast Ethernet Media Module designed for Hirschmann’s MICE (Modular Industrial Communication Equipment) modular switch family, including the MS20. MS30. and MNS20 series.
This hot-swappable hybrid module features 2x Fast Ethernet SFP slots (Ports 1 & 2) and 2x RJ45 copper ports (Ports 3 & 4). It allows industrial network operators to bridge localized copper device drops (e.g., PLCs, HMIs) with customizable optical fiber uplinks (multimode, single-mode, or long-haul via M-FAST-SFP transceivers) in a single modular chassis slot.
Technical Table
| Parameter / Feature | Technical Specification |
| Manufacturer | Hirschmann (a Belden Brand) |
| Model / Part Number | MM20-Z6Z6T1T1SZHH |
| Product Type | Hot-Swappable Fast Ethernet Media Module |
| Compatible Base Switches | MS20, MS30, MNS20 Modular Switches |
| Total Port Count | 4 Ports |
| Ports 1 & 2 (Fiber Uplinks) | 2x 100BASE-FX SFP Slots (M-FAST-SFP transceivers) |
| Ports 3 & 4 (Copper Field Drops) | 2x 10/100BASE-TX (RJ45, Auto-Negotiation, Auto-MDI/MDI-X) |
| Transmission Rate | 100 Mbps (Fast Ethernet) |
| Power Supply | Powered via host switch backplane bus |
| Power Consumption | Approx. 4.0 W – 6.0 W |
Part Number Breakdown (SZHH) |
• S: Standard Operating Temperature ($0^\circ\text{C}$ to $+60^\circ\text{C}$) • Z: Standard Approval Package (CE, FCC, cUL508) • H: Hazardous Location Approvals (Class I Div 2 / ATEX Zone 2) • H: Hardware Revision Code |
| Hot Swapping | Supported (replace or expand without taking down the host switch) |
Environmental Tolerance Conditions
Operating Temperature: $0^\circ\text{C}\text{ to }+60^\circ\text{C}$ (Standard Temperature Tier)
Operating Relative Humidity: 10% to 95% (non-condensing)
Protection Class: IP20 (Enclosure/Cabinet installation)
Mechanical Shock: 15 g for 11 ms duration (IEC 60068-2-27)
Vibration Resistance: 1 Hz to 150 Hz according to IEC 60068-2-6
Hazardous Location Ratings: ISA 12.12.01 Class I Div 2. ATEX Zone 2 compliant
Storage Conditions
Proper storage extends equipment life and ensures operational readiness:
Storage Temperature Range: $-40^\circ\text{C}\text{ to }+70^\circ\text{C}$
Storage Relative Humidity: 5% to 95% (non-condensing)
Environment: Clean, dust-free, and non-corrosive indoor atmosphere.
Packaging: Keep inside anti-static ESD shielding bags prior to deployment. Keep protective dust caps installed on empty SFP slots and RJ45 ports.
Operating Instructions
1.Observe Electrostatic Discharge (ESD) Safety：Handling & Safety。
Wear an anti-static wrist strap connected to cabinet ground before handling or unboxing the MM20 module.
2.Mount Module into Base Chassis：Physical Insertion。
Align the module guide rails with an open slot on the active MS20/MS30 switch frame. Push the module firmly until the backplane multi-pin connector fully seats into the host chassis.
3.Secure Retaining Screws：Fastening。
Tighten the top and bottom captive screws on the module faceplate using a flathead screwdriver to ensure complete electrical grounding and mechanical stability.
4.Connect Optical & Copper Links：Cable Integration。
Insert approved Hirschmann Fast Ethernet SFP transceivers (M-FAST-SFP series) into Ports 1 & 2 until latched. Plug shielded Cat5e or Cat6 cables into the RJ45 jacks for Ports 3 & 4.
Fault Diagnosis & Troubleshooting
Use the front-panel status LEDs to identify and resolve common communication issues:
| LED Status | Indicated Condition | Recommended Action |
| Power LED Off | Module is not receiving backplane power. | Re-seat module firmly into slot and ensure captive screws are tightened. Check host switch status. |
| Port LED Off | No physical link detected. | Check cable continuity, verify SFP transceiver compatibility, or check connected device power. |
| Port LED Amber / Yellow | Port disabled by software or speed mismatch. | Check switch web management / CLI interface for disabled port settings or VLAN misconfigurations. |
| High Bit Error Rate (Optical) | Contaminated SFP fiber optical interface. | Disconnect fiber cables and clean SFP optics using a 1.25 mm fiber cleaning tool. |
Related Models of the Same Series
The Hirschmann MM20 modular series includes several port combinations and environmental ratings:
| Model Name | Port Configuration | Temperature / Approval Rating |
| MM20-Z6Z6T1T1SAHH | 2x SFP slots + 2x RJ45 Copper | Standard Temp ($0^\circ\text{C}\text{ to }+60^\circ\text{C}$), Standard Approvals |
| MM20-Z6Z6Z6Z6SAHH | 4x SFP Slots | Standard Temp ($0^\circ\text{C}\text{ to }+60^\circ\text{C}$), Standard Approvals |
| MM20-Z6Z6Z6Z6EBH | 4x SFP Slots | Extended Temp ($-40^\circ\text{C}\text{ to }+70^\circ\text{C}$), Conformal Coated |
| MM20-T1T1T1T1SAHH | 4x 10/100BASE-TX RJ45 Copper | Standard Temp ($0^\circ\text{C}\text{ to }+60^\circ\text{C}$) |
| MM20-M2M2T1T1SAHH | 2x Multimode SC Fiber + 2x RJ45 | Standard Temp ($0^\circ\text{C}\text{ to }+60^\circ\text{C}$) |
| MM20-P9P9T1T1SAHH | 2x Single-mode SC Fiber + 2x RJ45 | Standard Temp ($0^\circ\text{C}\text{ to }+60^\circ\text{C}$) |