YOKOGAWA AR-SA S3.0 ARRESTOR 100ma 30 50VDC

YOKOGAWA AR-SA S3.0 ARRESTOR 100ma 30 50VDC

Description:

The Yokogawa AR-SA S3.0 Surge Arrester is used in signal protection systems to absorb transient voltage surges on 4–20 mA DC current signal lines. Commonly installed in control panels, marshalling cabinets, and instrumentation loops connected to transmitters and receivers. Maintenance teams and system integrators use this part for protecting sensitive instrumentation, replacing failed surge protection devices, or maintaining reliable signal integrity in process control systems.

Applications:

The Yokogawa AR-SA S3.0 is commonly used in industrial environments where analog current signals must be protected from lightning-induced or switching surges. It is frequently applied in oil & gas, chemical plants, power generation, and water treatment systems to safeguard transmitters, PLC/DCS input cards, and signal wiring. Installed between field devices and control systems, the arrester prevents surge damage and improves long-term reliability of instrumentation loops.

Technical Specifications:

• Manufacturer: Yokogawa
• Model / Part Number: AR-SA S3.0
• Product Type: Surge Arrester (Signal Line Protection Device)
• Signal Type: 4–20 mA DC current signal (12–30 VDC loop)
• Rated Current: 0–100 mA DC
• Maximum Continuous Voltage:
  – Between lines: 30 VDC
  – To ground: 50 VDC
• Response Time: ~3 ns
• Surge Protection: Absorbs lightning-induced surge voltages
• Discharge Capacity: Up to 5000 A (8/20 µs waveform)
• Leakage Current: ≤5 µA (line), ≤10 µA (ground)
• Series Resistance: ~33 Ω
• Construction: Plug-in type (main unit + terminal base)
• Mounting: Panel or DIN rail (with adapter)
• Function: Protects instrumentation from transient overvoltage events
• Application: Signal loop protection for transmitters and control systems

Common Replacements:

• Yokogawa AR-HA Surge Arrester (higher voltage range)
• Yokogawa AR-TC Surge Arrester (thermocouple signals)
• Yokogawa AR-RT Surge Arrester (RTD signals)