SCHNEIDER A9R71240 Residual Current Circuit Breaker (RCCB) Type AC 2P 40A 10mA

RCD Circuit Breaker SCHNEIDER A9R71240 Residual Current Device RCCB Type AC 2P 40A 10mA

The A9R71240 is a residual current circuit breaker designed for DIN rail mounting in electrical control panels. Its primary function is to immediately detect and disconnect the electrical circuit when an earth leakage current exceeds 30  mA, which is a level that can cause serious harm to humans. This device is Voltage Independent, meaning the tripping mechanism operates using a current transformer that detects current imbalance (incoming current does not equal outgoing current), ensuring protection still functions even under voltage drop conditions.

Specifications
- Human Protection: The 30  mA sensitivity is designed to protect against life-threatening hazards from direct electrical contact.
- Safety Indicators: Features VisiSafe and VisiTrip systems for safety and rapid fault identification.
- Voltage Independent Tripping: The circuit tripping mechanism operates independently of the system voltage, ensuring maximum protection reliability.
- Robustness: High mechanical endurance of up to 20,000 cycles and electrical endurance of 15,000 cycles.
- Easy Installation: Designed for DIN rail mounting with Single Terminal connections accommodating cables up to 35 mm.

Applications & Usage
- Residential and Commercial Buildings: Used as an electric shock protection device for all branch circuits in homes or buildings, such as outlet circuits, water heaters, and air conditioners.
- Damp and Wet Areas: Suitable for use in electrical circuits supplying bathrooms, kitchens, or outdoor areas where the risk of leakage current is high.
- High-Safety Required Equipment: Circuits supplying handheld power tools or equipment where users have direct contact.