Siemens IP67, IP69, IP66 Key Switch, SPST, 10A, 3-Way, Ronis-Key, Latching, Screw Terminal 3SU1100-4BL11-1NA0

Siemens 3SU1100-4BL11-1NA0 Key Switch is a highly reliable industrial control component designed to provide secure switching solutions with robust protection. Rated IP67, IP69, and IP66, this key switch is fully dust-tight and capable of withstanding water ingress up to 1 meter, making it suitable for harsh industrial environments including manufacturing plants, power distribution cabinets, and alarm control panels.

This SPST key switch can handle currents up to 10A and voltages up to 500V AC/DC, providing versatile switching capabilities for controlling critical circuits safely. The device features a latching operation with three selectable positions, operated by a Ronis key that rotates 45° left or right. This secure key mechanism limits control access to authorized personnel only, enhancing workplace safety and preventing accidental or unauthorized operation.

The switch's housing is made of durable plastic with a round bezel, and it uses screw-type terminals for reliable electrical connections, facilitating easy installation and maintenance. Designed to withstand temperatures ranging from -25°C to +70°C, it ensures reliable performance across a variety of industrial conditions. The mechanical life span of one million cycles underlines its durability for long-term use in industrial automation systems.

The product carries approvals including CE, UL, CSA, EAC, and CCC which attest to its compliance with international safety and quality standards. Part of the Siemens SIRIUS ACT series, this key switch is manufactured in Germany, reflecting high quality and engineering standards.

The switch operates with a latching mechanism for secure control. Constructed with durable plastic housing and a round bezel shape. Compatible with AC and DC voltages up to 500V for versatile applications. Equipped with Ronis key type allowing device activation through 45° rotation.

Screw terminal connections provide secure wiring and mounting convenience. Designed to operate reliably in temperatures from -25°C to +70°C. Mechanical life expectancy up to 1,000,000 cycles ensures long-term durability.

Compliance with CE, UL, CSA, EAC, and CCC standards guarantees safety and quality. Ideal for industrial automation, power distribution, and alarm systems requiring restricted access. Manufactured in Germany as part of the SIRIUS ACT series for industrial control devices.

This Siemens Key Switch is an essential component for industrial, automation, electrical, and commercial safety systems. Its combination of robust construction, secure key operation, and comprehensive environmental protection makes it suitable for power plants, manufacturing lines, HVAC control units, and other complex industrial infrastructures. Browse the Siemens brand offerings on EnvMart for more industrial-grade control devices.