Disconnector with fuse 3P+PEN/160A (PEN terminal on the housing) SZ160.322

Power disconnect switch for power networks – reliability and safety

This 3P+PEN power disconnect switch with a rated current of 160A is a robust solution for protecting electrical installations. Designed for use in both distribution networks and industry, it provides effective protection against overloads and short circuits. The construction with an additional PEN terminal simplifies the connection of protective conductors, increasing safety.

Construction and application

The SZ160.322 disconnect switch is a version of the SZ160.3 disconnect switch equipped with an additional KG90 terminal, mounted directly to the housing. It is used to connect PEN conductors, which simplifies installation and ensures proper equalization connection. It allows the connection of aluminum or copper conductors with a cross-section from 16 to 120 mm², both on the supply and load side. This is an ideal solution for installers working with different types of conductors.

The KG90 terminal is permanently integrated into the housing of the disconnect switch and protected by a cover, which minimizes the risk of accidental contact with live parts. The disconnect switch is designed for pole mounting, making it an ideal choice for overhead networks. The ability to operate with a rod (available separately) increases comfort and safety.

Key features and benefits

• High resistance to weather conditions: The housing made of aluminum alloy ensures durability and corrosion resistance, which is particularly important in outdoor installations.
• Universal connections: The ability to connect aluminum and copper conductors with a cross-section of 16-120 mm² eliminates the need for additional adapters.
• Safety: The additional PEN terminal and the covered KG90 terminal increase safety and minimize the risk of electric shock.
• Compliance with standards: Meets the requirements of IEC 60947-3 standards, ensuring compliance with applicable regulations and safety standards.
• Suitable for NH00 inserts: Compatible with standard NH00 fuse links, which facilitates replacement and maintenance.
• Mechanical strength: Solid construction guarantees long-lasting and reliable operation even in difficult operating conditions.
• AC22B utilization category: Provides appropriate operating characteristics in circuits with induction motors and other loads requiring high starting currents.

This disconnect switch is used in:

• Low-voltage power networks
• Pole-mounted switchgear
• Industrial installations
• Commercial and residential buildings (in the case of outdoor installations)

The rated continuous current is 160A, and the rated conditional short-circuit current is 50 kA – these parameters guarantee effective protection of the installation against the effects of overloads and short circuits. The maximum rated operating voltage AC is 415V.