|Figure 1. MDCAT External Appearance and Dimensions |
- 1000BASE-T / 100BASE-TX / 10BASE-T
- Ideal to protect network devices powered from Ethernet such as webcams
- Conforms to IEC 61643-21, Categories C1, C2
M-System’s model MDCAT is specifically designed to protect communication devices connected via Ethernet LAN from lightning surge entering through network cables.
1000BASE-T and PoE
Multi-stage protection is provided for all four pairs of conductors in Cat. 5e performance (1000BASE-T, 100BASE-TX and 10BASE-T) with minimal interference, tested for up to the maximum 100 meter segment length as defined in the standard. An equal level of protection is ensured for the core-to-core voltage used for PoE.
Both Alternative A and Alternative B configurations are usable to supply power to the protected network device.
|Figure 2. MDCAT application examples. |
Installation Options and DIN Rail Grounding
Compact module can be placed close to PCs, wireless hubs/switches and webcams in rolled-up LAN cables. It can also be snapped on a DIN rail for high-density mounting in a 19-inch rack together with Ethernet switches or inside a control panel with PLCs. Individual earth wiring is not necessary when you ground the DIN rail.
| || || |
|Figure 3. Clustered |
mounting on a DIN rail.
| ||Figure 4. DIN rail grounding & shortcircuit bar. |
Shield terminal, frame grounding, signal grounding may be provided or not depending on the protected devices. The MDCAT is provided as ‘grounding’ mode with a shortcircuit bar connecting the shield and the ground terminals. Removing the bar turns the module to ‘floating’ mode, so that a ground loop problem can be easily fixed. By separating the shield and the ground, the former terminal can be used for individual signal grounding.
|Table1. Performance |
| ||LINE-LINE |
per signal pair
|Max. continuous |
operating voltage Uc
|±6 V ||±58 V ||±150 V |
|Voltage protection |
|±15 V max. |
|±100 V max. |
|±600 V max. |
|Leakage current @Uc ||25 µA ||25 µA ||5 µA |
|Response time ||4 nsec. max. ||4 nsec. max. ||20 nsec. max. |
|Max. discharge current |
|100 A ||100 A ||10 kA |
|Nominal current IN ||1 A |
|Series resistance ||Approx. 0 Ω |
Every year lightning destroys millions of dollars of sensitive electronic equipment. Millions more are lost through extended down time and loss of production or mission-critical information.
That’s why companies around the world depend on on-line M-Rester Lightning Surge Protectors. The M-Rester absorbs only the lightning surges with no interruption of instrumentation signal.
|Product Bulletins |
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