The Schneider Electric Acti 9 iPRU 4P 20R is a Type 2 (Class II) Surge Protective Device designed for the main distribution board in three-phase electrical systems. The "20R" suffix indicates it is a special version with a built-in thermal disconnector, making it a "plug-and-play" SPD that does not require an external backup fuse or circuit breaker for most applications. It provides protection against transient overvoltages from indirect lightning strikes and switching surges.

Technical Specifications Brand / Series: Vickers by Eaton, DG4V-3 series (60 Series design) Model Code: DG4V-3-2AL-M-U-H7-60 Actuation Type: Solenoid operated Coil Voltage: 24 V DC Mounting / Interface: Subplate / manifold mount, ISO 4401-03 (D03) interface Valve Type: Directional control valve (3- or 4-way) Flow Rate (max): up to 21.0 GPM (≈ 80.0 L/min) Max Operating Pressure (P, A, B ports): 350 bar (≈ 5000 psi) Max Tank Port Pressure (T port): 210 bar (≈ 3000 psi) Seal Material (standard): Viton (for multi-fluid compatibility) — nitrile (Buna-N) may be an option depending on variant. Electrical Connection: ISO 4400 (DIN 43650) solenoid connector Power Consumption (coil): approx. 30 W Spool Type / Spring Arrangement: Spool “2AL” / Spool 2, Spring-offset (end-to-end) center arrangement Manual Override: Plain (standard) Fluid Compatibility: Petroleum-based hydraulic oils Fluid Cleanliness Recommended: 19/17/14 micron code Operating Temperature Range: –20 °C to +70 °C (–4 °F to +158 °F) Body Material: Gray cast iron Valve Size: D03 (ISO 4401)

SIEMENS A1A10000313.00DCR box is a high-performance equipment for industrial automation control system, which is suitable for data acquisition and control system in various complex environments. It can provide stable and reliable data transmission and processing capabilities, and is widely used in manufacturing, energy, transportation and other industries.