Hager RCD 63A Type A 30mA 4 Pole 4 Module CDA463U

Hager CDA463U: 63A 30mA 4 Pole RCCB Type A designed to disconnect a circuit automatically on detection of an earth fault between line and earth, or neutral and earth.

Safety & Reliability

This residual current circuit breaker (RCCB) uses a Type A sensing element, detecting both AC and pulsating DC residual currents for broader fault coverage than standard AC-type devices. A trip-free mechanism means the contacts cannot be held closed against a fault, so the circuit disconnects even if the operating handle is restrained.

Clear flag indication removes any guesswork on-site: a red flag confirms the contacts are closed, green confirms open, and a yellow flag shows when the device has tripped on a fault. Electricians get an instant visual status check without needing a meter.

Installation & Compliance

Manufactured by Hager Ltd and built to BS EN 61008 and IEC1008, this 4 pole RCCB suits three-phase distribution boards where earth fault protection is required across all live conductors. DIN rail mounting and a compact 4-module width keep panel layouts tidy.

Terminals accept 25mm² rigid or 16mm² flexible conductors at this 63A rating, giving installers flexibility with cable selection on busier circuits. For sites needing arc fault protection alongside earth leakage detection, this RCCB can be paired with a Hager AFDD to extend coverage against arcing faults that RCCBs alone will not detect.

Secure Isolation

All Hager RCCB's in this range accept a padlocking device (MZN175), letting contractors lock the switch in either the on or off position during maintenance. This supports safe isolation procedures on multi-occupancy or commercial installations where accidental re-energisation must be ruled out.

Key Features of the Hager CDA463U Include:

• Automatic Disconnection On Earth Fault Between Line & Earth Or Neutral & Earth
• Type A Residual Circuit Current Breaker Detects AC & Pulsating DC Fault Currents
• Trip-Free Mechanism Prevents Contacts Being Held Closed Against A Fault
• Flag Indicator Shows Red (Closed), Green (Open) & Yellow (Tripped) Status
• Padlockable On Or Off With MZN175 Accessory For Safe Isolation
• Compatible With Hager AFDD For Combined Arc & Earth Fault Protection
• Rated Current: 63A
• Rated Residual Current: 30mA
• Number Of Poles: 4
• Rated Voltage: 400V
• Rated Insulation Voltage (Ui): 500V
• Rated Impulse Withstand Voltage (Uimp): 4kV
• Short-Circuit Withstand Current (Icw): 6kA
• Surge Current Capacity: 0.25kA
• Degree Of Protection: IP20
• Terminal Capacity: 25mm² Rigid / 16mm² Flexible
• Mounting Method: DIN Rail
• Width: 4 Modular Spacings
• Ambient Operating Temperature: -25°C
• Conforms To BS EN 61008 & IEC1008

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