Legrand 25A Double Pole (DP) RCBO, 30 mA – EV Charger Safety Box Specification

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The Legrand 25A Double Pole (DP) RCBO with 30 mA sensitivity is an ideal protection device for single-phase EV charging installations up to approximately 5.5 kW (230 V). It combines overload, short-circuit, and earth leakage protection in a single device, making it suitable for residential and commercial EV charging applications. Legrand’s DX³ RCBO range is compliant with relevant IEC/IS standards and is designed for DIN rail mounting.

Technical Specifications

Parameter Specification
Product Legrand DX³ RCBO
Device Type Double Pole (DP) RCBO
Rated Current 25 A
Rated Voltage 230 V AC, 50 Hz
Number of Poles 2 Pole (Phase + Neutral)
Tripping Curve C Curve
Earth Leakage Sensitivity 30 mA
Residual Current Type Type AC (Type A recommended where required by EV charger manufacturer)
Breaking Capacity 6 kA
Standard IEC/IS 61009-1
Mounting 35 mm DIN Rail
Terminal Protection IP20
Terminal Capacity Up to 35 mm²
Test Button Yes
Mechanical ON/OFF Indicator Yes
Operating Frequency 50 Hz
Application EV Chargers, Homes, Offices, Shops, Commercial Installations

Features

  • Double Pole isolation for enhanced electrical safety.
  • Protection against overload, short circuit, and earth leakage in one device.
  • 30 mA residual current protection for personnel safety.
  • Compact DIN rail design for easy installation.
  • Colour-coded ON/OFF indication.
  • Earth leakage trip indication.
  • ISI-marked and manufactured to IEC/IS 61009 standards.
  • Suitable for EV charging panels, distribution boards, and residential electrical systems.

Suitable EV Charger Applications

EV Charger Rating Compatibility
3.3 kW Single Phase ✔ Recommended
5.5 kW Single Phase ✔ Recommended
7.4 kW Single Phase ✘ Use a 32 A DP RCBO instead

Typical EV Safety Box Configuration

Component Specification
Enclosure Powder-coated Metal Box
Protection Device Legrand 25 A DP RCBO, 30 mA
MCB Integrated in RCBO
Socket 16 A Universal or 32 A Industrial (as per charger rating)
Cable Gland Weatherproof
Door Lockable
Mounting Wall Mounted
Suitable For Indoor & Outdoor Installation

Note: Many EV charger manufacturers recommend a Type A RCBO because modern EV chargers may generate pulsating DC residual currents. Always follow the EV charger manufacturer’s installation requirements and local electrical regulations when selecting the RCBO type.