HIRSCHMANN MM20-Z6Z6Z6Z6EBH Industrial Media Module
HIRSCHMANN MM20-Z6Z6Z6Z6EBH Industrial Media Module
Product Introduction / Overview
The Hirschmann MM20-Z6Z6Z6Z6EBH is an industrial-grade Fast Ethernet media module designed for use with Hirschmann’s MICE (Modular Industrial Ethernet) switch family, such as the MS20. MS30. and PowerMICE series.
Equipped with four SFP slots (designated by the sub-module code Z6), this module allows flexible fiber-optic network expansion. It offers high network density and hot-swappable convenience, making it ideal for harsh industrial environments requiring reliable, long-distance, or noise-immune communications.
Technical Parameter List
| Parameter | Specification |
| Manufacturer | Hirschmann (Belden Brand) |
| Model Code | MM20-Z6Z6Z6Z6EBH |
| Order Number / Designation | 943 938-001 (Family configuration) |
| Module Type | Fast Ethernet Media Module (MICE system) |
| Total Ports | 4 x Fast Ethernet SFP Slots (100 Mbit/s) |
| Interface Types | 4 x SFP transceiver slots (Z6 configuration) |
| Transmission Speed | 100 Mbit/s Fast Ethernet |
| Power Supply | Supplied via MICE switch backplane |
| Operating Voltage | 5 V DC via backplane bus |
| Power Consumption | Approx. 3.2 W (varies with SFP modules inserted) |
| Diagnostics / LEDs | Power (P), Port Status / Link Status LEDs |
| Dimensions (W x H x D) | 38 mm x 134 mm x 118 mm |
| Weight | Approx. 180 g |
| Mounting | Snaps directly into MICE backplane / DIN rail via media switch base |
| Approvals / Certifications | CE, cUL508, ISA 12.12.01 (Class 1 Div 2), EN 61130-2, Railway EN 50121-4 |
Product Features / Core Advantages
High Modular Density: Provides 4 independent Fast Ethernet SFP slots in a single compact module width.
Flexible SFP Connectivity: Supports various Fast Ethernet SFP transceivers (multimode, single-mode, long-haul) to match custom fiber distance requirements.
Hot-Swappable Design: Can be installed or replaced in a running MICE switch base without interrupting power or network traffic on adjacent modules.
Industrial Hardening: Designed without moving cooling parts (fanless) to maximize Mean Time Between Failures (MTBF) in harsh environments.
Immunity to Electromagnetic Interference: Fiber-based interfaces ensure complete galvanic isolation, preventing ground loops and noise susceptibility.
Model Classification & Ordering Code Breakdown
The model designation MM20-Z6Z6Z6Z6EBH follows the standard Hirschmann MICE nomenclature breakdown:
MM20 – [Port 1][Port 2][Port 3][Port 4] – [Temp][Approvals][Housing]
MM20: Media Module for Fast Ethernet (100 Mbit/s) MICE series.
Z6 / Z6 / Z6 / Z6: Four slots configured for Fast Ethernet SFP transceivers (100BASE-FX).
E: Extended Temperature Range (Standard/Extended operating environment).
B: Basic / Standard Approvals (CE, cUL508. Safety).
H: Hardened / Ruggedized Industrial Housing design.
Environmental Tolerance Conditions
| Environmental Factor | Operating / Tolerance Range |
| Operating Temperature | -40 °C to +70 °C |
| Storage / Transport Temp | -40 °C to +85 °C |
| Relative Humidity | 10% to 95% (non-condensing) |
| Ingress Protection Class | IP20 |
| Vibration Resistance | IEC 60068-2-6 (5 Hz to 150 Hz, 1g) |
| Shock Resistance | IEC 60068-2-27 (15g, 11 ms duration) |
| EMC Interference Immunity | EN 61000-4-2 (ESD), EN 61000-4-4 (Burst), EN 61000-4-5 (Surge) |
Installation Method
1.Power & Safety Preparation：Pre-installation check。
Verify that the MICE switch base (e.g., MS20 or MS30) is securely mounted to the standard 35 mm DIN rail and properly grounded via the ground screw.
2.Module Insertion into Backplane：Mechanical alignment。
Align the rear guide rails of the MM20 module with the target slot on the MICE switch base. Push the module firmly until the backplane connector engages completely.
3.Fasten Locking Screws：Secure attachment。
Tighten the top and bottom captive locking screws on the module panel using a flat-head screwdriver to ensure mechanical stability and proper grounding connection.
4.SFP Transceiver Insertion：Optical interface setup。
Insert compatible Hirschmann 100 Mbit/s SFP transceivers into the Z6 SFP slots until they click into position. Remove dust caps prior to connecting fiber cables.
Operating Instructions
Power-On Self-Test (POST): Upon inserting the module into an active base unit, the power LED (P) will illuminate green, indicating successful backplane power delivery.
Port Link Verification: Connect the optical LC fiber cables to the corresponding SFP transceivers. The port LED corresponding to the slot number (1–4) will light up solid green when a valid link is established and flash during active data transmission.
SFP Compatibility: Ensure only Fast Ethernet (100 Mbps) SFPs are used in the Z6 slots. Gigabit SFPs (1000 Mbps) are not supported by MM20 series modules.
Maintenance & Cleaning: Keep protective dust caps installed on unused SFP slots to prevent dust build-up on optical sensors.