Eaton MTL4517

Product Name:​ MTL4517 Switch / Proximity Detector Interface (Digital Input Isolator)
Product Introduction:
Part of the MTL4500 backplane-mount series, the MTL4517 provides dual-channel isolation for dry contacts or NAMUR proximity switches located in hazardous areas, converting them to safe-area relay outputs with line fault detection.
Category:
Description
Technical Specifications:
  • Channels:​ 2 independent channels
  • Input Type:​ Hazardous area dry contacts or NAMUR sensors (7–9 VDC sensor supply)
  • Output:​ 2 x SPDT relays (Safe area) + 1 dedicated LFD relay
  • Fault Detection:​ Open-circuit (<50 µA) and short-circuit (<100 Ω) LFD
  • Response Time:​ ≤ 10 ms
  • Supply Voltage:​ 20–35 VDC (backplane powered)
  • Relay Rating:​ 0.5 A @ 35 VDC (10 W), 2 A @ 250 VAC resistive
  • Certification:​ Ex ia IIC Ga, Zone 0, ATEX/IECEx/CNEX
Functional Features:
  • Phase reversal via DIP switch
  • LED indicators: Green (Power), Amber (Channel), Red (Fault)
  • Three-way galvanic isolation
Applications:
  • Emergency Shutdown (ESD) button monitoring
  • Limit switch feedback from explosive atmospheres
  • Proximity sensor interfacing in pharmaceutical batching
Structure & Installation:
  • Plug-in module onto MTL4500 dedicated backplane (not DIN rail)
  • High-density cabinet arrangement supported
Usage Considerations:
  • Do not exceed NAMUR compliance voltage/current
  • Ensure backplane earth continuity for IS integrity
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