Legrand 402067 RX3 RCCB 4P 40A 100mA Type AC 230/400V

The Legrand 402067 RX³ is a 4P residual current circuit breaker (RCCB) rated 40A at 230/400V with 100mA sensitivity, Type AC. It provides earth fault and electric shock protection for three-phase circuits in commercial and industrial distribution boards by disconnecting the supply when a leakage current exceeding 100mA is detected.

Technical specifications:

• Part number: 402067
• Manufacturer: Legrand
• Series: RX³
• Type: Residual current circuit breaker (RCCB)
• Poles: 4P
• Rated current: 40A
• Sensitivity: 100mA
• RCD type: AC (detects sinusoidal AC fault currents)
• Rated voltage: 230/400V
• Mounting: DIN rail
• Standards: IEC/EN 61008-1

The 100mA sensitivity provides fire protection and is used as a selective main RCCB upstream of 30mA downstream devices, discriminating against nuisance tripping.

Features and benefits:

• Type AC detection covers sinusoidal AC residual currents from standard resistive and inductive loads
• Compact DIN rail design fits standard consumer units and distribution boards
• Clear trip indicator confirms fault disconnection
• Compatible with Legrand RX³ series MCBs and accessories for complete panel assemblies

Applications:

• Earth fault and electric shock protection in residential consumer units
• Main or sub-circuit RCCB in commercial distribution boards
• Replacement RCCB for existing Legrand RX³ installations

Compliant with IEC/EN 61008-1.

Also known as: Legrand 402067, RX³ RCCB 4P 40A 100mA, Legrand RX3 40A 4P residual current device, RCCB 4P 40A 100mA Type AC.