Ask our team:
  • Phone: +86 181 0690 9650
  • E-Mail info@apterpower.com

T9803

/ 4.9
1001 reviews | Need a Specific Revision?
The T9803 is a high-reliability digital input termination assembly (TA) engineered by ICS Triplex, a global leader in safety and fault-tolerant control solutions for mission-critical industrial applications.
Get a quick price for T9803
Quantity
*E-mail
Company
*Mobile
*Content
Upload (gif, jpg, jpeg, png, bmp, doc, docx, xls, xlsx, ppt, pdf, csv)

Technical specifications for T9803

  • Manufacturer:
    ICS Triplex
  • Part Number:
    T9803
  • Product Family:
    Trusted Triple Modular Redundant
  • Product Type:
    Digital Input Termination Assembly
  • Operating Voltage:
    24 VDC (standard industrial control voltage)
  • Input Configuration:
    16 channels (digital on/off signals)
  • Input Current:
    Maximum 6 mA per channel
  • Signal Type:
    Dry contact / DC input compatible
  • Response Time:
    ≤ 2 ms (high-speed signal processing)
  • Isolation:
    Channel-to-channel isolated design
  • Redundancy Support:
    Triple Modular Redundancy (TMR)
  • Communication Interface:
    RS-485 (for system integration)
  • Weight:
    3.06 kg
  • Estimated shipping dimensions:
    30.2x26.5x9.3cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Operating Environment Compatibility Applications

Features:

  • Triple Modular Redundancy (TMR) Architecture for SIL 3 Applications
  • Fully Isolated 16-Channel Digital Input Termination
  • Hazardous Area & Environmental Compliance
The T9803 supports 2oo3D (two-out-of-three with diagnostics) voting logic, enabling the system to tolerate a single module failure and continue safe operation. This architecture ensures both high safety integrity and high availability for critical emergency shutdown and fire & gas systems.

Designed for reliable field signal acquisition, the T9803 provides channel-to-channel and channel-to-chassis isolation (withstanding ±1.5 kVdc for 1 minute). This eliminates cross-talk, ground loops, and protects against EMI/RFI interference in electrically noisy environments such as variable frequency drive (VFD) cabinets and high-voltage switchyards.

Certified for use in Class I, Division 2, Groups A, B, C, and D (North America) and ATEX/IECEx Zone 2 (Ex ec IIC T4 Gc), the T9803 operates reliably from -25°C to +60°C. When installed in a certified IP54 enclosure with vertical orientation and 85°C rated conductors, it meets rigorous safety and environmental standards for oil & gas and chemical facilities.

The T9803 ICS Triplex digital input termination assembly may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
ICS Triplex T9803 digital input termination assembly Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
ICS Triplex T9803 digital input termination assembly

General

  • Manufacturer ICS Triplex
  • Model T9803
  • Condition New Original ready stock
  • Product Family T9801,T9802,T9831
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Ambient Temperature Range – -25°C to +60°C, supporting outdoor and unconditioned shelter installations.
  • Pollution Degree 2 (IEC 60664-1) – Designed for non-conductive pollution environments with occasional temporary condensation.
  • Humidity & Coating Protection – Conformal coating meets US MIL-146058C and IPC-CC-830, approved for defense and aerospace-level moisture/humidity resistance.
  • Installation Orientation – Vertical mounting only, requiring no forced air cooling, but must be placed in a tool-accessible IP54 minimum enclosure for hazardous locations.
  • AADvance Controller Ecosystem – Directly compatible with T9300 I/O Backplane and T9110 Processor Module for SIL 2 and SIL 3 configurations.
  • Redundancy Configurations – Works in simplex, dual (1oo2D), and TMR (2oo3D) architectures without special cables or interface units.
  • Backward Compatibility with Termination Assemblies – Shares physical and electrical compatibility with T9801 (simplex) and T9802 (dual), allowing modular safety upgrades.
  • Global Safety Certifications – UL listed for hazardous locations (File E251761), ATEX DEMKO 11 ATEX 1129711X, and IECEx UL 12.0032X, ensuring global plant acceptance.
  • Emergency Shutdown Systems (ESD) – Provides high-integrity digital input processing for emergency trips.
  • Fire & Gas (F&G) Protection Systems – Interfaces with flame, gas, and smoke detectors in SIL 3-rated loops.
  • Burner Management Systems (BMS) – Monitors flame safety switches and valve position feedback.
  • High-Availability Process Control – Suitable for critical rotating machinery protection where spurious trips must be minimized.
Description
The T9803 is a high-reliability digital input termination assembly (TA) engineered by ICS Triplex, a global leader in safety and fault-tolerant control solutions for mission-critical industrial applications. Designed as a core component of the Aadvance distributed control system (DCS) architecture, this module specializes in secure, high-speed acquisition and transmission of digital signals from field sensors, switches, and actuators — serving as an indispensable interface for safety instrumented systems (SIS) and process control networks. 

Targeting oil & gas, power generation, petrochemical processing, and nuclear energy sectors, the T9803 delivers unmatched fault tolerance, signal integrity, and environmental resilience, ensuring uninterrupted operation in harsh industrial environments where system failure could lead to catastrophic safety risks, financial losses, or environmental harm.

At its core, the T9803 is optimized for safety-critical data acquisition, featuring 16 fully isolated digital input channels that eliminate cross-interference and protect against electromagnetic interference (EMI) and radio frequency interference (RFI) — critical for maintaining signal integrity in environments with high-voltage equipment, variable frequency drives (VFDs), and industrial noise sources. 

Each channel operates independently, with built-in surge protection and overcurrent safeguards to withstand transient voltage spikes common in field applications. The T9803’s advanced Triple Modular Redundancy (TMR) architecture is a defining strength: it synchronizes data across three independent processing paths, enabling automatic fault detection and seamless failover without compromising data accuracy .

Alternative Names
T9802 T9801 T98O3 T9831 T9832 T9833 T9851 T9852
Technical notes
Designed and certified to IEC 61508 SIL 3, the ICS Triplex T9803 TMR Digital Input Termination Assembly is engineered for high-integrity safety instrumented systems where fault tolerance and automatic failure management are mandatory without process interruption.
Exceptional Service

Our Mission

  • 100% Satisfaction

    We believe expertise is priceless. With over 20 years of experience, and top engineers on staff, we can help you solve or avoid problems that threaten your business.
  • Trust Guaranteed

    Not only do we have a vast inventory, our team makes sure every piece of equipment is in working condition. Your purchases are also backed by our Warranty.
  • Expertise

    Time is money, especially when your equipment is down. We work quickly to get your equipment on its way so you can get it back up and running.

FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What type of signals does the T9803 support?
The T9803 is a digital input termination assembly designed for 16 channels of digital input signals in industrial control systems.
How does the T9803 handle redundancy?
It supports TMR (Triple Modular Redundancy) configurations, providing enhanced reliability by accommodating three digital input modules for critical applications.
What level of channel isolation does the T9803 offer?
The T9803 termination assembly provides isolated channel inputs suitable for robust operation in redundant system architectures.

Product Browsing History