MTL5553 Fieldbus Isolator – Hazardous Area Network Extender for H1 Systems
Industrial Fieldbus Solution
The MTL5553 safely extends 31.25kbit/s fieldbus networks into Zone 0, IIC hazardous areas. Provides power and communication with switchable termination for flexible installations.
Key Specifications
- Brand: MTL | Model: 5553 (Full code: MTL5553-EX-FB)
- Fieldbus Speed: 31.25kbit/s (H1 compliant)
- Output Power: 18.4V ±2% @80mA max
- DC Impedance: 105Ω ±3%
- Isolation: 250V AC safe/hazardous area
- Supply Voltage: 20-35V DC
- Power Consumption: 135mA @24V
- Certification: ATEX/IECEx Zone 0, IIC
Installation Features
- Switch-selectable termination for short networks
- DIN-rail mounting (vertical recommended)
- 10mm spacing required between units
- Green LED power indicator
5 Fieldbus FAQs
- When should I enable termination?
For safe-area bus lengths under 30 meters. - Can I daisy-chain multiple devices?
Yes, within the 80mA power limit. - What cable type is recommended?
Type A fieldbus cable for best performance. - How to calculate max cable length?
Based on IS parameters and voltage drop. - Is special configuration needed?
No, plug-and-play operation.
Package & Support
- 1x MTL5553 isolator unit
- Quick-start guide
- DIN-rail mounting clip
- 12-month performance warranty
- Express shipping via FedEx/UPS/DHL










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