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Showing 145 - 168 of 251 products

€5.342,95

Only 8 units left

Triconex Tricon Digital Output Module (DO) 3603B, 110/120VDC high-density. TMR supervised digital output for 110/120VDC loads with enhanced output current capability and comprehensive diagnostics. SIL 3 certified.

Triconex 3601TN Triconex

€9.449,95

Only 5 units left

Triconex Tricon Digital Output Module (DO) 3601TN, 115VAC, N-series. Enhanced version with N-series backplane compatibility for Tricon V10.5+ systems. Supervised 115VAC outputs with optical isolation. SIL 3 certified.

Triconex 3603 Triconex

€1.837,95

Only 3 units left

Triconex Tricon Digital Output Module (DO) 3603, 110/120VDC. TMR supervised digital output for high-voltage DC loads with output readback and load-line monitoring. SIL 3 certified.

Triconex 3601E Triconex

€1.045,95

Only 8 units left

Triconex Tricon Enhanced Digital Output Module (EDO), 115VAC, optically isolated. TMR supervised digital output for 115VAC loads with output readback verification, load-line monitoring, and optical isolation. 16-point capacity. SIL 3 certified per IEC 61508.

Triconex 3601T Triconex

€1.903,95

Only 5 units left

Triconex Tricon Digital Output Module (DO), 115VAC, TMR supervised. Triple modular redundant digital output switching 115VAC loads with supervised monitoring and optical isolation. SIL 3 certified.

Triconex 3564 Triconex

€2.165,95

Only 4 units left

Triconex Tricon Single Digital Input Module, 24VDC. TMR digital input with non-triplicated single-channel configuration for monitoring non-safety-critical discrete signals within the Tricon safety system. 24VDC input with optical isolation.

Triconex 3533E Triconex

€0,00

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Triconex Tricon Enhanced Input Module 3533E. TMR input module for Tricon safety controllers with enhanced signal conditioning and diagnostic capabilities. SIL 3 certified per IEC 61508.

Triconex 3531E Triconex

€2.839,95

Only 8 units left

Triconex Tricon Enhanced Digital Output Module, 115VAC variant. TMR supervised digital output with 115VAC switching capability, output readback verification, and load-line monitoring. SIL 3 certified.

Triconex 3512X Triconex

€0,00

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Triconex Tricon Pulse Input Module (PI) 3512X, extended version. TMR pulse input with enhanced frequency range and additional counting features for demanding turbomachinery speed monitoring applications. SIL 3 certified.

Triconex 3515 Triconex

€0,00

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Triconex Tricon Pulse Input Module (PI) 3515. TMR pulse input module with specialized input characteristics for specific pulse/frequency measurement applications in safety-critical turbomachinery protection. SIL 3 certified.

Triconex 3511 Triconex

€6.730,95

Only 8 units left

Triconex Tricon Pulse Input Module (PI) 3511. TMR pulse input for high-speed frequency and speed measurement applications. Supports multiple counting modes, programmable filtering, and direction detection for turbine speed, flow metering, and encoder feedback. SIL 3 certified.

Triconex 3510 Triconex

€1.903,95

Only 7 units left

Triconex Tricon Pulse Input Module (PI), TMR. High-speed pulse counting module for turbomachinery speed monitoring, flow measurement, and frequency detection. Configurable counting modes with debounce filtering. SIL 3 certified.

Triconex 3506X Triconex

€4.409,95

Only 8 units left

Triconex Tricon Supervised Digital Input Module (DI) 3506X, 24VDC. TMR digital input with supervised line monitoring capability to detect wiring faults (open and short circuits) on each input channel for enhanced safety integrity. SIL 3 certified.

Triconex 3505E Triconex

€0,00

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Triconex Tricon Enhanced Digital Input Module (EDI) 3505E. TMR digital input module with specialized input specifications for particular field device configurations. Optical isolation, wire-break detection. SIL 3 certified.

Triconex 3504E Triconex

€6.341,95

Only 4 units left

Triconex Tricon High Density Digital Input Module (HDDI), 24VDC, 64-point. TMR high-density digital input providing double the point count per slot. 24VDC input with optical isolation, wire-break detection, and per-channel diagnostics. SIL 3 certified.

Triconex 3503F Triconex

€0,00

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Triconex Tricon Digital Input Module (DI) 3503F, 24VAC/DC variant. TMR digital input with specialized configuration for specific field device interface requirements. 32-point, optically isolated. SIL 3 certified.

Triconex 3503EN2 Triconex

€0,00

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Triconex Tricon Enhanced Digital Input Module (EDI) 3503EN2, 24VAC/DC, N-series Version 2. Latest generation 24V digital input with N-series backplane compatibility, enhanced diagnostics, and improved cybersecurity. SIL 3 certified.

Triconex 3503EC Triconex

€6.183,95

Only 3 units left

Triconex Tricon Enhanced Digital Input Module (EDI) 3503EC, 24VAC/DC, conformal coated. Same specifications as 3503E with additional conformal coating for harsh environment protection against moisture, dust, and corrosive atmospheres. SIL 3 certified.

Triconex 3503E Triconex

€1.205,95

Only 9 units left

Triconex Tricon Enhanced Digital Input Module (EDI), 24VAC/DC, 32-point. TMR digital input with enhanced diagnostics, improved noise immunity, and faster response time for 24V field devices. Optical isolation, wire-break detection, per-channel fault reporting. SIL 3 certified per IEC 61508.

Triconex 3503 Triconex

€1.903,95

Only 6 units left

Triconex Tricon Digital Input Module (DI), 24VAC/DC, 32-point. TMR digital input module accepting 24VAC or 24VDC discrete signals. Optical isolation, per-channel diagnostics, and wire-break detection. SIL 3 certified.

Triconex 3502EN2 Triconex

€0,00

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Triconex Tricon Enhanced Digital Input Module (EDI) 3502EN2, 48VAC/DC, N-series Version 2. Latest generation 48V digital input with N-series backplane compatibility and enhanced diagnostics. SIL 3 certified.

Triconex 3502E Triconex

€542,95

Only 3 units left

Triconex Tricon Enhanced Digital Input Module (EDI), 48VAC/DC, 32-point. TMR digital input module accepting 48VAC or 48VDC discrete signals with optical isolation and enhanced diagnostics. Used for low-voltage field devices. SIL 3 certified.

Triconex 3501TN2 Triconex

€2.536,95

Only 5 units left

Triconex Tricon Enhanced Digital Input Module (EDI) 3501TN2, 115VAC/DC, N-series Version 2. Latest generation 115V digital input with improved wire-break detection, enhanced cybersecurity, and N-series backplane compatibility. SIL 3 certified.

Triconex 3501TN Triconex

€9.449,95

Only 3 units left

Triconex Tricon Digital Input Module (DI) 3501TN, 115VAC/DC, N-series. Enhanced version with improved diagnostics and N-series compatibility for Tricon V10.5+ safety controllers. 32-point, optically isolated. SIL 3 certified.

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Triconex is a Schneider Electric brand specializing in safety instrumented systems and critical control technology for process industries and high-hazard industrial applications. Triconex hardware is built around the Triple Modular Redundancy (TMR) architecture, in which three independent processing channels run in parallel and vote on outputs, maintaining continuous safe-state operation even when individual components fail. Triconex systems are certified to IEC 61508 and IEC 61511 standards and are deployed globally in facilities where a failure in the safety function carries unacceptable operational, safety, and regulatory risk. PLC Direct supplies Triconex hardware for customers sourcing replacement components for installed Tricon safety systems. Our Triconex collection supports maintenance teams and procurement managers in keeping existing Triconex-based safety installations operational.

Why Choose Triconex Safety Systems

Triconex is recognized as a purpose-built safety instrumented system platform with a long-established presence in process industries where SIL 2 and SIL 3 functional safety requirements apply. The Tricon platform's fully triplicated architecture, from input modules through main processors to output modules, is designed to provide fault-tolerant, uninterrupted operation in environments where any lapse in safety function availability is not acceptable.

Triconex safety systems are commonly installed in:

Oil and gas production, refining, and petrochemical processing facilities
LNG terminals, gas transmission pipelines, and compressor stations
Chemical and specialty chemical manufacturing plants
Power generation facilities, including thermal and nuclear applications
Offshore platforms and subsea production installations
Facilities subject to OSHA Process Safety Management (PSM) regulations
Industrial plants requiring emergency shutdown (ESD) and fire and gas detection systems

This concentration in safety-critical process industries reflects Triconex’s design focus on high-integrity, high-availability control, where the cost of a missed safe-state response is measured in environmental, safety, and regulatory terms.

Triconex Products and Solutions

Triconex hardware at PLC Direct covers components used within the Tricon safety system platform, including communication modules, I/O termination panels, terminal boards, interface modules, analog input assemblies, and field communication accessories. The Triconex collection focuses on hardware that supports the maintenance and lifecycle continuity of installed Tricon systems.

Triconex Product Families

Tricon Communication Modules (TCM): The 4351B is a Tricon Communication Module used in Tricon v10.0 and later systems. Each TCM contains four RS-232/RS-485 serial ports and two 10/100BaseT copper Ethernet network ports, supporting TriStation, Modbus master and slave, TCP/IP, TSAA, and SNTP protocols. A single Tricon system supports up to four TCMs. The 4351B enables communication between the Tricon controller, TriStation engineering workstations, other Tricon or Trident controllers, and Modbus devices over Ethernet networks.
Tricon Terminal Boards: Terminal board assemblies for field wiring termination in the Tricon system. These boards provide organized connection points for analog and digital I/O field wiring within the Tricon cabinet. The collection covers the 9761, 9762, 9765, and 9771 series, including the 9761-210, 9762-210, 9765-210, 9771, 9771-210, and 9771-2XX configurations.
Tricon Interface and Terminal Modules: Interface and terminal modules for Tricon safety system wiring, covering the 9802, 9832, and 9852 series. These modules provide the physical connection interface between Tricon I/O and field instrumentation wiring.
Tricon DIDO Termination Panels: Combined digital I/O termination panels for organized field wiring within the Tricon safety system. The 9853 series is available in two terminal block configurations: Phoenix Contact (9853) and Weidmuller (9853-610), reflecting the two variants used across different Tricon installation specifications.
Tricon Analog Input Module Assemblies: Integrated housing and control unit assemblies for analog measurement applications. The HCU3700/3703E combines the 3700-series analog input module with the 3703E isolated analog input, providing integrated thermocouple and process measurement capability in a pre-configured assembly.
MTL4850 HART Multiplexer: The MTL4850 is a HART protocol multiplexer used with Tricon safety system I/O modules to enable communication with HART-enabled field instruments. It provides maintenance teams access to device diagnostics, configuration data, and calibration information from connected field devices.

Triconex Products Available on PLC Direct

4351B Tricon Communication Module (TCM) with four RS-232/RS-485 serial ports and two 10/100BaseT copper Ethernet network ports, compatible with Tricon v10.0 and later systems
Tricon terminal boards across the 9761, 9762, 9765, and 9771 series for analog and digital field wiring termination
Tricon interface and terminal modules in the 9802, 9832, and 9852 series
Tricon DIDO termination panels (9853 series) in Phoenix Contact and Weidmuller terminal configurations
HCU3700/3703E integrated analog input module assemblies for thermocouple and process measurement
MTL4850 HART multiplexer for field device communication with Tricon I/O modules

These products are typically sourced for component replacement, wiring infrastructure maintenance, and lifecycle support of existing Tricon safety system installations.

Lifecycle Support for Triconex Industrial Systems

PLC Direct supports Triconex safety system installations by supplying hardware components used across active and aging Tricon systems. Our focus is on helping maintenance engineers and procurement teams source the specific Triconex hardware needed to keep installed safety systems operational without waiting on OEM lead times.

Our support coverage includes:

Hardware for active, in-service Tricon safety system installations
Components used in older Tricon system versions still in operation at process facilities
Select discontinued Triconex parts, subject to availability.

Additional support may include:

Inventory-backed availability for urgent sourcing requirements
Assistance with part number identification and order verification
Sourcing support for hard-to-find Triconex termination and interface hardware
1-year PLC Direct warranty on all purchased items

PLC Direct supplies Triconex hardware for replacement and maintenance purposes and does not provide safety system design, programming, validation, or integration services.

Frequently Asked Questions

Triple Modular Redundancy means the Tricon system runs three independent processing channels simultaneously. All three channels read inputs, execute the control program, and vote on outputs, so the system continues to function correctly even if one channel develops a fault. For procurement teams, TMR architecture means that every I/O module, terminal board, and communication component in a Tricon system must match the installed configuration precisely. Part compatibility is not just a performance question — it is a safety architecture requirement.

We carry Triconex components for installed Tricon safety systems, including terminal boards (9761, 9762, 9765, and 9771 series), interface and terminal modules (9802, 9832, and 9852), DIDO termination panels (9853 series in Phoenix Contact and Weidmuller configurations), HCU3700/3703E analog input assemblies, and the MTL4850 HART multiplexer. Contact us with your part number to check current availability.

Triconex systems are most commonly found in oil and gas production and refining, petrochemical and chemical processing, LNG terminals, power generation, and offshore platforms. These are industries where process safety management regulations require safety instrumented systems certified to IEC 61508 or IEC 61511, and where an undetected failure in a safety function carries serious operational and regulatory consequences.

No. The 9853 (Phoenix Contact) and 9853-610 (Weidmuller) DIDO termination panels are distinct versions designed for specific terminal block types used in different Tricon installations. The terminal block manufacturer affects the compatibility of field wiring terminations. Always verify which configuration is installed before ordering a replacement panel.

As an independent supplier, we stock Triconex hardware outside standard OEM distribution channels. This makes PLC Direct a practical sourcing option for maintenance teams that need a specific Tricon terminal board, interface module, or DIDO panel quickly. Contact us with your part number to check availability and condition grade options.