Single-pole double-throw switch iSSW-20-11 20A 1NO/1NC A9E18072

This linear switch from the Acti9 series by Schneider Electric is a reliable solution for manual control of electrical circuits. Model iSSW-20-11, with a rated current of 20A, is designed for installation in modular switchboards, occupying a width of one module (18mm). Its single-pole design with 1NO/1NC contacts provides flexibility in circuit configuration.

Functionality and Application

This switch finds application in a wide range of electrical installations – both in residential and commercial buildings. It is ideal for situations where manual switching of circuits is required, e.g., lighting, sockets or heating devices. The possibility of connecting rigid or flexible copper wires with a cross-section from 0.5 mm² to 2x2.5 mm² facilitates installation and ensures a solid connection. Forced isolation according to DIN VDE 0113 guarantees safe use.

Technical Characteristics and Construction

The switch design has been designed with ease of installation and reliability in mind. Offset terminals facilitate wire connection, and a tightening torque of 1 N.m (PZ1 screw) ensures a stable connection. The IP40 degree of protection protects against access to live parts and dust. A mechanical endurance of 30,000 switching cycles (AC22, cos φ=0.8) demonstrates the long service life of the device. Rated voltage of 250V AC and compliance with IEC 60669-1 and IEC 60947-5-1 standards confirm its safety and quality. The absence of a signaling lamp simplifies the design and reduces the cost of the device.