Bircher ESD3-03-24ACDC switching unit—a key component in safety systems for automatic doors, gates, and industrial machinery:

Technical Specifications

• Model: ESD3-03-24ACDC
• Manufacturer: Bircher Reglomat
• Type: Safety switching unit
• Operating Voltage: 24 V AC/DC
• Inputs: 2 sensor inputs
• Outputs: 2 relay outputs (fail-safe design)
• Mounting: DIN rail (35 mm)
• Housing Dimensions: 79 × 44 × 104 mm
• Weight: 190 g
• Safety Category: Category 3 (EN 954-1 / ISO 13849-1)
• Reset Options: Automatic or external reset
• Monitoring Principle:
  • Evaluates resistance of connected sensors (typically 8.2)
  • Detects activation when resistance drops below threshold
  • Detects faults when resistance rises above threshold
• LED Indicators:
  • Yellow: Sensor activated
  • Red: Fault condition
• Protection Class: IP30
• Tariff Code: 85364900