Yokogawa AR-SA Surge Arrester

Overview

The Yokogawa AR-SA surge arrester is designed to protect electronic instruments from inductive lightning surges, especially those caused by lightning discharges. It is a crucial component in industrial control systems that require robust protection for DC current signal lines. The AR-SA is part of the AR Series, offering high performance, ease of maintenance, and wide compatibility with various signal types and power supplies commonly found in industrial environments.

Technical Specifications

• Product Type: Surge arrester for DC current signals
• Rated Voltage: 12 to 30 V DC signal line
• Surge Absorption Element: Zinc oxide varistor
• Compatibility: Suitable for use with various Yokogawa electronic instruments and systems
• Design: Plug-in connection with separable main unit and terminal block

Performance Specifications

• Maximum Continuous Voltage (Uc): 30 V DC
• Surge Absorption: 50 V DC
• Leakage Current:
  • 5 μA or less at 30 V DC
  • 10 μA or less at 50 V DC
• Impulse Protection Level (8/20 μs):
  • Between Lines: 250 V or less
  • Between Ground: 350 V or less
• Response Time: 3 ns
• Series Resistance: 33 Ω ± 10%
• Rated Current: 100 mA DC
• Durability: 500 A, 5000 A