Siemens SIMATIC S7-300 Digital output SM 322, 8DO, 40-pole, 24VDC, 5A Part number 6ES7322-1HF10-0AA0

Product Overview

The Siemens 6ES7322-1HF10-0AA0 is a SIMATIC S7-300 digital output module (SM 322) equipped with 8 relay outputs. Each channel can switch AC or DC loads up to 5 A, offering flexible control for actuators, contactors, solenoid valves, and signaling devices. Designed for robust industrial automation, the module provides galvanic isolation, high switching capability, and reliable performance across a wide temperature range.

Key Features

• 8 isolated relay outputs for AC and DC load switching
• Rated for 5 A per channel at 24 V DC or 230 V AC
• Galvanic isolation between output channels and backplane bus
• Suitable for inductive, resistive, and lamp loads
• Compact 40 mm module width for efficient rack space usage
• Relay switching suitable for high load currents and mixed-voltage applications
• Designed for SIMATIC S7-300 automation systems

Technical Specifications

• Article Number: 6ES7322-1HF10-0AA0
• Product Type: Digital Output Module, SM 322 Relay
• No. of Outputs: 8 relay outputs
• Load Voltage: 24 V DC or 230 V AC
• Rated Current: 5 A per channel
• Switching Frequency: Approx. 2 Hz (resistive) / 0.5 Hz (inductive)
• Power Loss: Approx. 3.2 W
• Backplane Bus Current: Max. 40 mA
• Supply Current (L+): Max. 125 mA
• Isolation: Galvanic isolation between output channels and logic
• Connector Type: 40-pin front connector
• Dimensions (W × H × D): 40 × 125 × 120 mm
• Weight: Approx. 320 g
• Operating Temperature: –25 °C to +60 °C

Compliance & Certifications

• Siemens SIMATIC S7-300 system certified module
• Meets Siemens standards for industrial relay output modules
• Designed for long service life and dependable switching isolation

Applications

Ideal for switching AC or DC loads in industrial automation, including motor contactors, solenoids, pilot lamps, and electrically actuated devices. Commonly used in manufacturing cells, machinery automation panels, distributed I/O stations, and high-demand relay-based control systems.