Residual current circuit breaker with overcurrent protection B/6kA, 16A, 30mA, 2-pole, type A ADA916D

Residual Current Circuit Breaker with Overcurrent (RCBO) is a reliable protection for electrical installations, combining the functions of an overcurrent and residual current circuit breaker. Model ADA916D, with a rated current of 16A and a sensitivity of 30mA, provides comprehensive protection against the effects of short circuits, overloads, and electric shock. The two-pole design (1P+N) makes it ideal for protecting lighting, socket, and other circuits in residential and commercial buildings.

Characteristics and application

The circuit breaker is characterized by a B tripping characteristic, which means it reacts quickly to an increase in short-circuit current, but is more tolerant to short-term inrush currents – which is particularly important when connecting devices with induction motors or other pulsed loads. Type A indicates its ability to detect alternating residual currents, providing protection for people against electric shock. The rated short-circuit breaking capacity Icn of 6kA guarantees effective disconnection of the circuit in the event of a serious failure.

Advantages and benefits

• Versatile protection: Combining overcurrent and residual current protection in one device simplifies installation and increases safety.
• Fast response: Characteristic B ensures quick tripping in the event of short circuits, minimizing the risk of damage to the installation and equipment.
• Protection against electric shock: 30mA sensitivity effectively detects leakage currents, protecting users from dangerous electric shocks.
• Easy installation: 2 module width allows for easy installation in standard distribution boards. Flush mounting option further increases flexibility.
• Safety of use: Protection against contact IP2X and a lock preventing accidental opening of the device ensure a high level of safety during operation.
• Durable construction: Made of high-quality materials, guarantees reliable operation for a long time.
• Wide operating temperature range: Allows operation in difficult environmental conditions (-25°C to +40°C).
• Compatibility with DIN rails: Facilitates integration with existing distribution systems.

Design and parameters

The circuit breaker is designed for ease of installation and maintenance. It has screw terminals allowing the connection of wires with a cross-section from 1 mm² to 25 mm² (solid) and from 1 mm² to 16 mm² (stranded). The rated insulation voltage Ui is 500V, and the rated impulse withstand voltage Uimp is 4kV – confirming its resistance to overvoltages. The energy limitation class is 3, which indicates high efficiency in suppressing short-circuit energy. Additionally, the circuit breaker has two contact position indicators and a residual current release facilitating fault diagnosis.