Copper Terminal Block Housing: In Which Situations Is It Not Advisable To Use Low-smoke Halogen-free Materials?

In areas subject to frequent bending, pulling, or significant mechanical stress, using low-smoke, zero-halogen (LSZH) materials for the copper terminal block housing may pose potential risks.

Housing transitions and bending points

Low-smoke, zero-halogen materials are commonly used for cable jackets or in fixed-structure housing designs. During processing, these materials tend to develop high rigidity and low ductility. At copper distribution block locations requiring bending or angle adjustment, this rigidity may prevent the housing from adequately accommodating deformation. Over time, stress concentration could lead to cracks or damage.

Areas Subject to Thermal Cycling or Temperature Fluctuations

While LSH materials offer advantages in fire resistance and low smoke emission, their physical properties are more susceptible to aging and embrittlement under temperature fluctuations or thermal cycling conditions. copper terminal strip For industrial environments or wiring systems with significant temperature variations, these areas should not rashly adopt LSH enclosures solely for short-term fire safety requirements.