DZ158 Miniature Circuit Breaker (MCB) is designed to provide reliable overload and short-circuit protection for low-voltage electrical circuits. It also functions as a switch and isolation device, enabling safe operation and maintenance in distribution systems.
Engineered for use across different earthing systems such as TN-S and TN-C, the DZ158 ensures dependable circuit protection when the prospective short-circuit current remains within the breaker’s rated capacity. Its compact modular design allows easy DIN-rail mounting, making it suitable for modern panel layouts.
Ideal for industrial control panels, commercial buildings, infrastructure projects, and OEM electrical assemblies, the DZ158 MCB delivers consistent protection, operational safety, and long-term reliability in everyday electrical applications.
1.1 Function
Protection of circuits against short-circuit currents, protection of circuits against overload currents, switch, isolation.
1.2 Selection
Technical data of the network at the point considered:
the earthing systems (TNS, TNC),
short-circuit current at the circuit-breaker installation point, which must always be less than the breaking capacity of this device,
Network normal voltage.
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