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Legrand DX3 RCCB FP 40A 300mA

Legrand DX3 RCCB FP 40A 300mA Specifications, Features & Compatibility Guide

The Legrand DX3 RCCB FP 40A 300mA is a four-pole (4P) current-operated safety device designed for 400V residential distribution systems. Installed as a main incomer, it provides essential earth leakage protection by monitoring the vector sum of currents across all phases and the neutral conductor.

Quick Answer

Yes, you should consider the Legrand DX3 4P 40A 300mA RCCB if robust earth leakage and fire protection are priorities for your home. Designed for 400V residential mains, its IS 12640 certification guarantees compliance and reliable safety performance. Invest in this device for peace of mind, knowing your family and property are protected from electrical faults.

Opt for the Legrand DX3 RCCB FP 40A 300mA if your residential setup demands IS 12640 compliant, high-efficiency earth leakage and fire protection as a main incomer. Avoid if your requirements exceed standard residential capacity or if budget takes precedence over superior safety performance.

✓ Who Should Buy

  • • performance suitable for residential spaces.
  • •Verified efficiency of standard rating for reduced long-term operational costs.
  • •Structural stability for consistent cleaning under rigorous use cases.
  • •Hardware durability via premium components and advanced technology.
  • •Built-in grid protection with Standard power cycle voltage management.

✕ Who Should Avoid

  • •Spaces or usage requirements exceeding residential rated capacity.
  • •Installations prioritizing minimum capital expenditure over high-efficiency performance.
  • •Unstable grid conditions exceeding the functional threshold of Standard power cycle.
  • •Environments incompatible with electrical safety devices physical and thermal dissipation specs.
Product Overview
The Legrand DX3 RCCB FP 40A 300mA is a four-pole (4P) current-operated safety device designed for 400V residential distribution systems. Installed as a main incomer, it provides essential earth leakage protection by monitoring the vector sum of currents across all phases and the neutral conductor.

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Engineering Analysis
The 300mA sensitivity is specifically engineered for fire protection, as it detects leakages that are too low to trip an MCB but high enough to cause ignition. Its 630A making and breaking capacity allows the device to safely handle connection surges, while the four-pole configuration ensures total isolation of three-phase loads and the neutral line.

Technical Support & FAQs