Product Overview:

The WE 77/Ex-1 230V is a switch amplifier designed for transferring digital signals from hazardous areas to safe areas. It works with NAMUR sensors or mechanical contacts and features lead breakage monitoring, ensuring signal integrity and system reliability.

Technical Specifications:

• Input: EEx ia IIC (NAMUR sensors, mechanical contacts)
• Power Supply: 230V AC (198 - 253V, 45-65Hz)
• Output: Relay with 1 changeover contact
• Contact Loading:
  • 253V AC / 2A / 500VA
  • 125V AC / 4A / 500VA
  • 40V DC / 2A / 80W (ohmic load)
• Switching Frequency: <10 Hz
• Mechanical Life: 10 million switching cycles
• Electrical Isolation: 300V rated insulation voltage
• Ambient Temperature: -25°C to 60°C
• Protection Class: IP20
• Dimensions: 40 × 104 × 110 mm
• Weight: Approx. 390g
• Certifications: ATEX, EN 60947-5-6, IEC 60529, EN 50020