Power circuit breaker with thermal-magnetic trip unit DPX3 160 4P 40A 16kA 420012

Power switch – reliable installation protection

This four-pole DPX3 160 power switch with a rated current of 40A and a short-circuit breaking capacity of 16kA is a solid solution for protecting electrical circuits. Designed for both residential and commercial applications, it provides effective protection against overloads and short circuits. The device's construction allows for mounting on a TH rail, making installation and replacement easier.

Functionality and design features

The switch is characterized by versatility thanks to the possibility of connecting auxiliary contacts – one changeover and two normally open. This allows integration with control and signaling systems. The built-in thermal-magnetic trip unit with adjustment in the range of 32-40A allows for precise adaptation to the load characteristics. This ensures that the device reacts quickly to overloads, protecting the installation from damage, while allowing for short-term current surges, e.g. when starting motors. Additionally, the presence of a trip indicator facilitates identification of the device's status after the protection has activated.

The switch has a rated current of 40A and a short-circuit breaking capacity of 16kA (at 400V). It is a four-pole device with an overload trip setting range of 32 to 40A and a protection degree of IP30. The connection of the main contacts is realized by screw terminals.

Application and compliance with standards

The DPX3 160 switch is ideal for protecting lighting circuits, socket outlets and electrical devices with higher power consumption. It meets the requirements of IEC 60947-2 standard, which guarantees its safety and reliability. The device also has a built-in undervoltage release, increasing the scope of installation protection. The possibility of mounting on a DIN TH rail facilitates integration with existing electrical switchboards. Screw terminals allow connection of wires with a cross-section of up to 70 mm², ensuring a solid electrical connection.