10KA Miniature Circuit Breaker TDM4-125

Technical Data

Overload Current Protection Characteristics

Product Overview

A 125A miniature circuit breaker (MCB) is a critical protection device used in electrical distribution systems, specifically designed for high-current circuits. It integrates dual functions of overload protection and short-circuit protection. When the current in the circuit exceeds the rated value (e.g., due to overload) or experiences a severe short-circuit fault, it can quickly and reliably automatically cut off the power supply, effectively preventing conductor overheating, equipment damage, and electrical fire hazards.

Core Functions

Precise Overload Protection
Rapid Short-Circuit Protection
Reliable Switching and Isolation
Enhanced Electrical Fire Prevention

Product Features

1.Structure and Standard Compliance: The modular design not only simplifies the installation process but also facilitates subsequent maintenance and replacement. Furthermore, the product strictly adheres to the IEC60947-2 international standard, ensuring that its quality and safety performance meet global standards and is compatible with power system requirements in multiple regions.

2.Core performance advantages: First, stable and reliable performance. Equipped with high-precision current detection elements, it can operate stably under rated conditions for a long time, reducing the probability of failure. Second, precise protection characteristics. When an overcurrent or short circuit occurs in the line, it can respond and disconnect the circuit within milliseconds to prevent the fault from escalating. Third, it is compact and takes up about 20% less space in the distribution box than traditional circuit breakers of the same specification, making it particularly suitable for installation scenarios where components are densely packed inside the distribution box.

3.Material and Durability: The outer shell is made of high-temperature resistant and flame-retardant PC material, which has excellent insulation and impact resistance. It can withstand a wide operating temperature range of -25°C to 70°C and adapt to different regional climatic conditions. The internal conductive components are made of high-purity copper to reduce resistance loss, reduce heat generation, and extend the product life. Under normal use, the mechanical life can reach more than 10,000 times, and the electrical life can reach more than 5,000 times.

4.Installation and compatibility features: Supports 35mm standard rail installation, eliminating the need for custom mounting brackets, and adapts to mainstream distribution box specifications on the market. It also has excellent compatibility and can be flexibly combined with leakage protection accessories and auxiliary contacts of the same brand or those that meet international standards to expand protection functions and meet personalized power protection needs in different scenarios.