DC overcurrent circuit breaker 1-pole FAZ-C3/1-DC 279123

Safety and Reliability in DC Installations

This single-pole circuit breaker FAZ-C3/1-DC is a key protective element in direct current circuits. Designed by Eaton, it provides effective protection against overloads and short circuits, minimizing the risk of damage and downtime. Its compact size – only 1 module wide – makes it easy to install even in crowded distribution boards.

The circuit breaker is characterized by a high breaking capacity of up to 10 kA at 250V and 400V DC, which guarantees a quick and safe response in the event of a failure. Characteristic C allows for tolerance of short-term current surges, typical for starting motors or powering electronic devices, while ensuring reliable protection against long-term overloads. Immunity to reverse polarity further increases safety and installation flexibility.

Installation and operating parameters

The FAZ-C3/1-DC circuit breaker is designed to operate in temperatures from -25°C to 75°C, making it suitable for use in various environmental conditions. Wire cross-section from 1 mm² to 25 mm² (solid and stranded) ensures compatibility with a wide range of installations. The IP20 degree of protection protects against accidental contact, and the rated insulation voltage Ui at 440V guarantees safe use. The rated impulse withstand voltage Uimp is 4 kV.

The breaking capacity of the circuit breaker is 10 kA at 250V and 400V DC, in accordance with IEC 60947-2. The C tripping characteristic is particularly recommended for circuits with devices generating high inrush currents. The circuit breaker operates at a rated voltage of 250 V DC, and with the use of two poles, it is possible to connect to a network with a voltage of 500 V DC. The accepted wire cross-section is from 1 mm² to 25 mm² for both solid and stranded wires. The device retains its properties in a wide temperature range, from -25°C to 75°C, and the IP20 degree of protection provides basic protection against contact. The width of the circuit breaker is only 1 module (18mm), which facilitates installation in tight spaces.

This circuit breaker is a solid solution for both professional installers and end-users looking for reliable protection of their DC electrical installations. Its compact size, high breaking capacity and resistance to environmental conditions make it an optimal choice for a wide range of applications.