Siemens 6ES7326-1RF00-0AB0 Digital Input Module

The Siemens 6ES7326-1RF00-0AB0 is a NAMUR-based, fail-safe digital input module for SIMATIC S7 safety systems (S7-300F), delivering eight 24 V DC NAMUR inputs in an Ex(i) protected 1x40-pole module. It supports eight one-channel inputs or four two-channel inputs, enabling flexible wiring configurations for safety circuits. Designed for hazardous environments, the module carries Category 4 (EN 954-1) safety ratings, SIL3 (IEC 61508), and PLE (ISO 13849) compliance for safety-related signaling, and is intended for use with SIMATIC S7-F safety systems. Electrical characteristics include a 24 V DC supply, with input current from load voltage L+ (no load) up to 160 mA and from the backplane 5 V DC up to 90 mA, and a typical power loss of around 4.5 W. The eight NAMUR inputs are configured to monitor NAMUR sensors directly while preserving intrinsic safety in Ex(i) environments, all within a single 40-pole backplane footprint. This module is a purpose-built digital input solution for safety applications in Siemens automation ecosystems, providing robust, clearly defined input points for failsafe control circuits.