Circuit breaker 25kA, In=20A, characteristic B. 2-pole. AZ-2-B20 174493

Overcurrent switch – reliable protection for electrical installations

This two-pole overcurrent switch from Eaton's AZ series is a key element of every safe electrical installation. Designed to protect circuits against overloads and short circuits, it ensures stable and reliable operation. The rated short-circuit breaking capacity of 25kA guarantees an effective response in emergency situations, minimizing the risk of damage and fires.

Characteristics and application

The switch with a rated current of 20A and B characteristic is ideal for protecting lighting circuits, socket circuits and other standard applications in residential, commercial and industrial buildings. The B characteristic means that the switch reacts quickly to short-term overloads, but is more tolerant to short current surges, which is particularly important when connecting devices with motors or other elements generating starting current. This avoids unnecessary tripping of the circuit during normal operation of devices.

Construction and technical parameters

The switch is made of high-quality materials, which ensures its durability and reliability. Mounting on a DIN rail is quick and easy, and the compact dimensions (width of 2 modules) allow for efficient use of space in the switchgear cabinet. Compliance with EN 60898 standards ensures safety and a guarantee of proper operation. Additionally, the possibility of using auxiliary accessories allows you to expand the functionality of the switch, adapting it to the individual needs of the installation.

The switch is characterized by a rated short-circuit breaking capacity (Icn) of 6kA at 230V AC and 6kA at 400V AC, which ensures effective protection against the effects of short circuits. Its rated voltage is 400V AC – the standard voltage in most electrical installations. It also provides a high level of safety thanks to the rated insulation voltage (Ui) of 440V and the impulse withstand voltage (Uimp) of 4kV. The degree of protection (IP) is IP20, which means protection against touching with fingers and solid objects with a diameter of more than 12.5 mm. The energy limitation class is 3, providing adequate protection in the event of an electric arc, and the surge category is III, making it suitable for installation in residential and public buildings. Compact dimensions – the installation depth is 75 mm – make it easy to install in tight spaces.