DZ158-125

series introduction

# Introduction to the DZ158 - 125 Product Series

## 1. Overview
The DZ158 - 125 product series is a high - performance and reliable range of electrical devices, primarily designed for use in low - voltage distribution systems. These devices play a crucial role in protecting electrical circuits and equipment from various electrical faults, ensuring the safety and stability of power supply in a wide range of applications.

## 2. Key Features

### 2.1 High Breaking Capacity
The DZ158 - 125 series is engineered with a high breaking capacity. This means that in the event of a short - circuit or other high - current fault, the device can quickly and safely interrupt the electrical circuit. It can handle large fault currents without being damaged, preventing further damage to the electrical system and reducing the risk of fire or other safety hazards.

### 2.2 Precise Overload Protection
These devices are equipped with advanced thermal - magnetic trip units. The thermal part of the trip unit responds to long - term overloads. When the current in the circuit exceeds the rated value for an extended period, the thermal element heats up and causes the trip mechanism to operate, disconnecting the circuit. The magnetic part, on the other hand, provides instantaneous protection against short - circuits. It can detect sudden large increases in current and trip the circuit breaker within milliseconds.

### 2.3 Adjustable Trip Settings
Many models in the DZ158 - 125 series offer adjustable trip settings. This allows users to customize the protection parameters according to the specific requirements of their electrical systems. For example, the overload current setting can be adjusted to match the load capacity of the connected equipment, ensuring optimal protection without unnecessary tripping.

### 2.4 Compact Design
The DZ158 - 125 devices feature a compact design, which is beneficial in applications where space is limited. Their small size allows for easy installation in electrical panels, switchboards, and other enclosures. This not only saves valuable space but also simplifies the overall wiring and installation process.

### 2.5 High Reliability
Built with high - quality materials and advanced manufacturing processes, the DZ158 - 125 series offers high reliability. These devices are designed to withstand harsh environmental conditions, including temperature variations, humidity, and vibration. They have a long service life and require minimal maintenance, reducing the total cost of ownership for users.

## 3. Technical Specifications

### 3.1 Rated Current
The DZ158 - 125 series typically offers a range of rated currents, usually from a few amperes up to 125 amperes. This wide range of rated currents allows users to select the appropriate device for different load requirements, whether it is for small - scale residential applications or larger commercial and industrial installations.

### 3.2 Voltage Rating
These devices are designed for use in low - voltage systems, with a common voltage rating of 230V or 400V, depending on the specific model. They are suitable for both single - phase and three - phase electrical systems, providing flexibility in different power distribution scenarios.

### 3.3 Breaking Capacity
The breaking capacity of the DZ158 - 125 series can vary depending on the model, but it generally ranges from several kiloamperes to tens of kiloamperes. This high breaking capacity ensures that the device can safely interrupt fault currents in various electrical systems.

### 3.4 Trip Characteristics
The trip characteristics of the DZ158 - 125 series are designed to meet international standards. The thermal - magnetic trip units provide both long - time delay (for overload protection) and short - time delay or instantaneous (for short - circuit protection) tri

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