Overcurrent circuit breaker 25kA, In=25A, B characteristic. 1-pole. AZ-B25 174481

Overcurrent switch – reliable installation protection

This single-pole overcurrent switch from Eaton's AZ series, with a rated current of 25A and B characteristic, is a key element of every safe electrical installation. It provides effective protection against overloads and short circuits, protecting both devices and the electrical installation. Its short-circuit strength of 25kA guarantees reliable operation even in difficult conditions.

Functionality and application

The AZ-B25 switch is designed to operate in AC circuits with a voltage of 230V and a frequency of 50-60Hz. The B characteristic means that the switch reacts quickly to a short circuit, but tolerates short-term current surges, which is particularly important when connecting devices with electric motors or other loads with high starting current. Installation is simple and intuitive – a width of 1.5 modules makes it easy to place it in a standard distribution board.

• Overload protection: Prevents damage to wires and devices caused by excessive load.
• Short-circuit protection: Immediately interrupts the circuit in the event of a short circuit, minimizing the risk of fire and damage.
• Versatility: Suitable for use in home, commercial and industrial installations.
• High durability: Short-circuit breaking capacity of 25kA ensures safety even in the event of serious failures.
• Mounting: Easy mounting on TH35 rail thanks to the standard width of 1.5 modules.

Construction and parameters

The switch is made of high-quality materials, which guarantees its durability and reliability. The IP20 degree of protection provides protection against accidental contact, and the energy limitation class 3 and surge category 3 confirm its compliance with safety standards. The cross-section of the connected solid or stranded wire ranges from 2.5 to 50 mm², which allows connecting wires of different thicknesses. The ambient temperature in operating conditions is in the range of -25 to 55°C, which allows the use of the switch in various environmental conditions. Additional equipment can be selected according to needs, expanding the functionality of the switch. The rated impulse withstand voltage Uimp is 4kV and the rated insulation voltage Ui is 440V.