Triconex is a world-leading supplier of safety-critical control systems. It is now part of the Schneider Electric Group and focuses on safety automation solutions for high-risk industries such as petrochemicals and nuclear power. Founded in 1983, the company is renowned for its triple modular redundancy (TMR) technology and its products have passed SIL3 safety certification.
Parameter Details
Brand TRICONEX
Model 3503EN
Alternative Model 3503E
Type TMR Digital Input Module
Series Tricon Safety Instrumented System
Core Function 32-Point 24VAC/VDC Digital Signal Acquisition
Country of Origin USA
Condition New / Refurbished / Surplus Available
Availability In Stock / Contact Us
Warranty 12 Months
Product Description
TRICONEX 3503EN is a high-reliability Digital Input Module designed for Tricon Safety Instrumented System (SIS) applications. Based on Triple Modular Redundant (TMR) architecture, the module provides reliable acquisition of discrete field signals for safety-critical industrial processes.
The 3503EN module supports 24 VAC/VDC digital input signals and provides 32 input points with self-test capability. It is designed for applications where fault tolerance, diagnostic coverage, and continuous system availability are critical.
As part of the Triconex legacy safety controller platform, the 3503EN is widely used as a replacement spare for existing Tricon systems operating in industries such as oil & gas, power generation, chemical processing, and petrochemical production.
| Item | Description |
|---|---|
| Product Name | Triconex Digital Input Module |
| Model | 3503EN |
| System | Tricon Safety System |
| Input Channels | 32 |
| Signal Type | Digital Input |
| Voltage | 24 VAC/VDC |
| Architecture | TMR |
| Self-Test | Supported |
| Isolation | Opto-isolated |
| Application | SIS / ESD / Safety Control |
| Installation | Tricon Chassis |
| Weight | Approx. 0.5 kg |
| HS Code | 8538900000 |
The 3503EN provides the interface between field safety devices and Tricon processors.
Typical connection:
Field Sensors
↓
Digital Input Module
↓
Tricon Processor
↓
Safety Logic
↓
Shutdown / Protection Action
Main functions:
(1) Receive safety signals
(2) Provide fault-tolerant input processing
(3) Support safety interlocks
(4) Maintain system availability
When replacing TRICONEX 3503EN, confirm:
(1) Existing Tricon model
(2) Module position
(3) Input voltage
(4) Terminal panel type
(5) Application requirement
We supply:
(1) Original Triconex modules
(2) Surplus inventory
(3) Tested replacement units
(4) Refurbished SIS components
Typical industries:
(1) Oil & Gas
(2) Chemical
(3) Refining
(4) Energy
(5) Manufacturing
(6) Process Safety Systems
For quotation, please provide:
(1) Part number
(2) Quantity
(3) Current Tricon system information
(4) Delivery location
(5) Required condition
A clear photo of the module label can help confirm compatibility.
Before shipment:
(1) Verify Triconex identification
(2) Inspect module appearance
(3) Check connectors
(4) Test functions where possible
(5) Prepare export documents
Related Products:
Related Tags:
TRICONEX + Tricon + 3503EN + Safety PLC + SIS Controller + Industrial Automation Spare Parts
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