CS AR-04M120 Pizzato Safety module 3NO+1NC, category 4

CSAR-04M120 Safety Relay Module Overview

The Pizzato CSAR-04M120 is a safety relay module from the CS AR series, designed for monitoring emergency stop circuits, safety gates, and interlocking devices in industrial machinery.

It belongs to the CS AR-04 family, typically used in applications requiring an expanded safety output configuration for controlling multiple contactors or safety zones in complex industrial systems.

Main Function

• Monitoring of safety guard doors and interlock switches
• Emergency stop (E-stop) circuit supervision
• Safe shutdown of machinery
• Control of multiple safety contactors or distributed safety zones

Key Features

• Supply voltage: 120 Vac
• Safety outputs: Expanded multi-output configuration (CS AR-04 family)
• Safety level: Category 4 / PL e / SIL 3
• Function: Dual-channel safety monitoring for E-stop and guards
• Mounting: DIN rail (compact 22.5 mm housing)
• Connection: Plug-in screw or spring terminals (variant dependent)

Safety Performance

The CSAR-04M120 is designed for high-risk industrial machinery applications and complies with:

• EN ISO 13849-1 (Category 4 / PL e)
• IEC 61508 (SIL 3)

This ensures redundant internal safety architecture and safe failure behavior, where any detected fault forces the system into a safe state.

How It Works (Simple Explanation)

• Door opens → machine stops immediately
• Emergency stop pressed → power is safely cut
• Fault detected → system transitions to safe state

Typical Applications

• Large machine guarding systems
• Industrial automation lines
• Robotics and conveyor safety systems
• Packaging and production machinery
• Multi-zone safety control systems

Quick Summary

The CSAR-04M120 is a 120 Vac safety relay module from the CS AR-04 family, designed for expanded multi-output safety applications requiring Category 4 / PL e / SIL 3 protection in complex industrial machinery.