Siemens Key-operated switch, 2 positions, lock number 455 Part number 3SU1000-4CF11-0AA0

Product Overview

The Siemens 3SU1000-4CF11-0AA0 is a RONIS key-operated switch, 22 mm round actuator, configured with lock number 421, supplied with two keys. It provides two switch positions (O / I), with latching operation at 90° (10:30 h / 13:30 h) and allows key removal in the O position.

Key Features

• Key-operated switch with metal key actuator and 22 mm mounting diameter
• Lock number 421; two keys included
• Two switch positions: O and I, with latching actuation
• Actuating angle: 90° (from 10:30 h to 13:30 h)
• High protection rating: front-actuator IP66 / IP67 / IP69K, terminals IP20

Technical Specifications

• Product Series: SIRIUS ACT Key-Operated Switches
• Article Number: 3SU1000-4CF11-0AA0
• Actuating Element: Key, metal, silver finish
• Mounting Diameter: 22.3 mm (+0.4 mm tolerance)
• Installation Depth: ~25.4 mm
• Switch Positions: 2 (O / I)
• Key Removal: Only in position O
• Mechanical Service Life: ~1 000 000 operations
• Operating Ambient Temperature: –25 °C to +70 °C
• Storage Temperature: –40 °C to +80 °C

Compliance & Certifications

• Front protection class IP66 / IP67 / IP69K; terminals IP20
• NEMA ratings: 1, 2, 3, 3R, 4, 4X, 12, 13
• Compliant with Siemens industrial-automation standards for operator elements

Applications

The 3SU1000-4CF11-0AA0 is ideal for machine-control panels, safety interlocks and industrial automation systems where secure key-control in two positions (O/I) is required. Its robust protection rating and turnkey key actuator design make it suitable for harsh-environment use in manufacturing plants, outdoor cabinets and maintenance-critical installations.