25A 1-phase A-type Hager CDA225K RCCB 30mA 230VAC

Multipurpose automatic fuse for DIN rail mounting. Automatic circuit breaker can be used in various application such as:

• Electrical cabinet
• Electrical device
• Industrial electrical installations
• Household electrical installation
• Protecting electrical motor (Large motors require slow fuses such as D-class or even slower)

RCD or Residual-Curren Device monitors the amount of current passing through the phase wire and compares it with the current returning through neutral wire. If the RCD senses up to a 30mA difference between those two it means, that electricity has "leaked somewhere". Leakage in this case can mean that for example an appliance chassis has been damaged and the internal electrified parts touch the grounded chassis. Other reasons for tripping the RCD might be breaking of electrical motor's copper winding and "leakage" into the chassis or person touching an electrified parts, which results in electricity going through the person to the ground. If you have some certain devices which feature naturally large leakage currents as normal operation, such as large electrical motors or some certain electrical testers, then those can't be used with an RCD nor it is needed, but most likely the user/owner already knows this.

Residual-current devices protective function is based on the fact, that during electrocution human gets max 30mA current through him and it is being turned off in less than 300ms. This way we can avoid personal injuries.

RCCB's technical details:

• Rated leakage current:
  • Max 30mA
• Rated max operation current:
  • 25A
• Fuse type:
  • A-type
• Nominal operating voltage:
  • 220VAC
• Max inrush current:
  • I_m630A
• Max short circuit current:
  • 6kA
• Max operating voltage:
  • 400VAC
• Mounting:
  • Into 35mm DIN rail
• Complies with standards:
  • IEC 61008