Overcurrent circuit breaker, 3P, D characteristic, 25A, 6kA, AC | S203-D25 2CDS253001R0251

Overcurrent switch – reliable protection of electrical installation

This three-pole overcurrent switch with D characteristic is a key element of every safe and efficient electrical installation. Designed to protect circuits against overloads and short circuits, it provides not only safety of use but also long-term reliability. This switch is particularly recommended for applications where high inrush currents occur, such as when starting motors or devices with heating elements.

Functionality and application

The S203-D25 switch with a rated current of 25A and a short-circuit breaking capacity of 6kA (at 230V) effectively protects the installation against the effects of sudden current increases. The D characteristic means delayed tripping, which allows for trouble-free starting of devices generating high starting currents – without unnecessary tripping of the circuit. This is an ideal solution for workshops, public buildings or homes with a large number of energy-consuming devices.

• Overload protection: The switch automatically disconnects the circuit if the permissible current is exceeded, protecting wires and devices from damage.
• Short-circuit protection: Fast reaction to a short circuit minimizes the risk of fire and equipment damage.
• D characteristic: Delayed tripping allows for trouble-free starting of devices with high starting currents, such as motors or transformers.
• High short-circuit breaking capacity: Provides effective protection even in the event of serious failures in the installation.
• Mounting on TH35 rail: Standard mounting simplifies installation and replacement of the switch.

Technical parameters and construction

The switch has been designed with durability and reliability in mind. Its housing is made of high-quality materials, resistant to mechanical damage and external factors. A width of 3 modules allows for efficient use of space in the switchgear cabinet. The rated insulation voltage Ui is 440V, and the IP20 degree of protection provides basic protection against accidental contact. Additional equipment can be installed if necessary, which increases the functionality of the device. The switch meets the requirements of EN 60898 and IEC 60947-2 standards, which guarantees its safety and compliance with applicable regulations.