Product Description

The Triconex 2553-8 Terminal Board (Part No. 7400056-380) is a critical interface component designed to connect field devices to Triconex safety instrumented systems (SIS). Featuring 32 isolated input channels, it supports multiple signal types including dry contact, wet contact, and pulse, providing versatile compatibility with industrial safety devices.

Engineered for reliability and safety, the 2553-8 offers hot-swappable module support, high-integrity communication protocols, and built-in diagnostic capabilities, making it ideal for safety-critical applications. With robust point isolation (1500–2500 VDC) and a wide input voltage range (90–155 VAC/VDC), the module ensures secure, interference-resistant signal acquisition.

Compact and durable, the terminal board operates across extreme temperatures from –40 °C to +85 °C, ensuring dependable performance in harsh industrial environments. It is widely deployed in oil & gas, petrochemical, and power generation industries, where safety integrity and fault tolerance are essential.

Key Features

• 32 isolated input channels

• Accepts dry contact, wet contact, and pulse signals

• Input voltage range: 90–155 VAC/VDC

• Input current range: 6–9 mA

• Point isolation: 1500–2500 VDC

• Supports hot-swappable modules

• High-integrity communication protocols

• Built-in diagnostic capabilities

• Compact dimensions: 173 × 117 × 48 mm 

• Lightweight: 0.4 kg 

• Wide operating temperature range: –40 °C to +85 °C

Technical Specifications