Hager RCD 100A Type A 30mA 2 Pole 2 Module CDA285U

Hager CD285U: 100A 30mA 2 Pole RCCB Type A, a DIN rail mounted residual current circuit breaker for earth fault protection on line and neutral circuits.

Safety & Reliability

This Hager RCCB opens the circuit automatically the moment it detects an earth fault between line and earth, or neutral and earth, cutting power before a fault becomes a hazard. The trip-free mechanism means the switch cannot be held closed against a fault condition, so protection stays effective even under manual interference. Built to BS EN 61008 and IEC1008, it gives contractors a compliant, tested device for consumer units and distribution boards where reliable residual circuit current breaker performance is required.

Clear Status Indication

A rectangular flag indicator shows switch position at a glance: red for closed, green for open, removing any guesswork during inspection or fault-finding. A separate yellow flag confirms when the device has tripped, so engineers can quickly identify which RCCB has operated in a board full of similar units. This visual feedback speeds up diagnosis on site and reduces callback time when isolating faults.

Installation & Compliance

Terminal capacities of 50mm² rigid and 35mm² flexible conductor at this 100A rating make the CD285U straightforward to wire into higher-current distribution circuits, while the 2-module DIN rail footprint keeps panel space to a minimum. The device can be padlocked on or off using a Hager MZN175 accessory, giving installers a simple way to lock out circuits during maintenance. As a Hager Ltd manufactured product with IP20 ingress protection and a 500V rated insulation voltage, it's built for standard indoor distribution board use.

Key Features of the Hager CD285U Residual Current Circuit Breaker Include:

• Automatically Disconnects Supply On Earth Fault Between Line/Neutral And Earth
• Trip-Free Mechanism Prevents Override During A Fault Condition
• Red/Green Flag Indicator Shows Closed/Open Switch Position At A Glance
• Yellow Flag Indicator Confirms When The Device Has Tripped
• Lockable On Or Off Using A Hager MZN175 Padlock Accessory
• Suitable As A Residual Current Circuit Breaker (RCCB) For Domestic And Commercial Distribution Boards
• Rated Current: 100A
• Rated Residual Operating Current: 30mA
• Number Of Poles: 2
• Leakage Current Type: Type A
• Rated Voltage: 230V, 50Hz
• Rated Insulation Voltage (Ui): 500V
• Rated Impulse Withstand Voltage (Uimp): 4kV
• Terminal Capacity (100A Rating): Rigid 50mm², Flexible 35mm²
• Mounting Method: DIN Rail, Width 2 Modules
• Degree Of Protection: IP20
• Ambient Operating Temperature: -25°C And Above
• Compliant With BS EN 61008 & IEC1008