Chint Residual current circuit breaker Fi

The Chint residual current circuit breaker is an essential accessory for distribution boards, providing comprehensive protection for people and equipment. With a rated operational residual current of I△n ≤ 30mA, it effectively protects against direct contact in the event of excessive touch voltage. At a residual current of I△n ≤ 300mA, it offers preventive fire protection by detecting and interrupting dangerous fault currents. The switch is capable of detecting both slowly rising and sudden sinusoidal alternating currents, making it particularly versatile. The tripping characteristic B (3-5 ln) protects systems from overload and short circuits, while characteristic C (5-10 ln) is also suitable for resistive and inductive loads with low inrush current. With a breaking capacity of 6 kA, this circuit breaker ensures reliable performance in various applications.

• Protection against direct contact in the event of excessive touch voltage
• Preventive fire protection for fault currents up to 300mA
• Detection of sinusoidal alternating currents
• Versatile tripping characteristics for different applications.