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Legrand DX3 RCCB FP 63A 300mA

Legrand DX3 RCCB FP 63A 300mA Specifications, Features & Compatibility Guide

The Legrand DX3 RCCB FP 63A 300mA is a four-pole (4P) Type AC residual current circuit breaker designed for high-load residential main incomer applications.Rated for 230V operation, this device monitors 50Hz circuits to detect insulation failures and prevent electrical fires.

Quick Answer

You should buy the Legrand DX3 RCCB FP 63A 300mA if you require robust earth leakage protection for a high-load main incomer in your Indian residence. Its 4-pole, 63A, 300mA rating ensures critical fire safety against insulation failures, a vital investment for modern home electrical systems. This model is ideal for those prioritizing long-term safety and certified performance over initial cost savings.

This Legrand DX3 RCCB FP 63A 300mA is an excellent choice for Indian homeowners seeking advanced electrical fire safety for high-load main incomers, aligning with IS 12640 standards. However, avoid if your installation exceeds residential capacity or if budget takes precedence over verified, top-tier protection.

✓ 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 63A 300mA is a four-pole (4P) Type AC residual current circuit breaker designed for high-load residential main incomer applications. Rated for 230V operation, this device monitors 50Hz circuits to detect insulation failures and prevent electrical fires. Its primary function is providing earth leakage protection in distribution boards where standard MCBs cannot detect low-level leakage currents.

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Engineering Analysis
The 300mA sensitivity is specifically chosen for fire protection in residential settings where a 30mA device might cause nuisance tripping on long cable runs. With a 10kA breaking capacity, this RCCB handles high fault levels at the main incomer when coordinated with a backup MCB. The 4P configuration ensures that the neutral line is switched along with the three phases, providing total isolation during 300ms instantaneous tripping events.

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