The Triconex 3351 is a high-performance analog input module designed for integration into safety-critical, fault-tolerant control systems. This module provides reliable signal acquisition for process variables, converting field transmitter inputs into precise digital data for monitoring and control applications. Built to meet the rigorous demands of industrial automation, the 3351 ensures high availability and system integrity in environments where process continuity is essential, such as petrochemical, energy, and chemical manufacturing sectors.
This module is ideal for safety instrumented systems (SIS) that require high-integrity monitoring of analog process variables. It is commonly deployed in emergency shutdown systems (ESD), fire and gas monitoring, and critical process control loops where signal accuracy and fault detection are mandatory.
| Model | 3351 |
| Brand | Triconex |
| Input Channels | 32 differential |
| Signal Range | 4 to 20 mA or 0 to 5 VDC |
| Power Consumption | 5.5 W (max) |
| Operating Temperature | 0 to 60 deg C |
Is the 3351 module hot-swappable?
Yes, the Triconex 3351 is designed to be replaced while the system is operational, provided the installation is performed according to standard safety procedures and local site protocols.
What is the primary function of the 3351 module?
The 3351 acts as an analog interface, converting field-level signals (current or voltage) into validated digital data for use by the Triconex controller in a TMR configuration.
Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.
Mark Thompson
Maintenance Manager, USAFinding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.
Robert Hoffmann
Engineering Lead, GermanyWe have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.
Lucas Müller
Operations Director, Germany