Why Source from PLC Autocontroller?
✔ 20-year track record – we speak Triconex, Allen-Bradley, ABB, Schneider and more.
✔ Genuine, new-in-box hardware with 12-month warranty.
✔ Export docs & same-day customs clearance from Xiamen Free-Trade Zone.
✔ Multiple shipping channels (DHL, FedEx, air or sea freight) to 60+ countries.
✔ Payment safety: bank T/T, PayPal, Alibaba Trade Assurance accepted.
The TRICONEX 3503E is a 32-point, triple-modular-redundant (TMR) digital input module engineered for Safety Instrumented Systems (SIS) that must remain fault-free even in harsh, continuously-operating plants.
PLC Autocontroller, based in Xiamen-China with two decades of automation export experience, now offers the 3503E ex-stock for next-day dispatch worldwide.
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Feature Group
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3503E Advantage
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Safety Integrity
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Certified to IEC 61508 SIL 3, TÜV approved
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Availability
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Hot-spare & on-line self-test of "stuck-ON" points
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Flexibility
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Accepts dry contact, NPN or PNP sensors in the same module
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Maintenance
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Module can be swapped under power; mechanical keying prevents mis-insertion
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Technical Specifications
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Parameter
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Rated / Limit Value
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Input points
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32, common return
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Nominal voltage
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24 VDC / 24 VAC (47–63 Hz)
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Operating range
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20…42.5 VDC / 24 VAC
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Channel scan time
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≤ 5 ms (typical)
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Isolation
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Optical, channel-to-bus
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Diagnostics
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Continuous, automatic
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Operating temperature
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–40 °C to +70 °C
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Key code
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Brown (#10) – matches Tricon v10+ chassis
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Part number
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3503E (Rev. D, PN 7400252-025)
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Typical Application Areas
1. Emergency shutdown (ESD) & fire-and-gas loops
2. High-integrity pressure, temperature and level monitoring
3. Turbine & compressor protection skids
4. Offshore and onshore oil, gas, chemical and power facilities
What happens next?
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Your quote
You’ll get a fully customized quote to fit your unique needs.
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