Siemens Key-operated switch, 2 switch positions O-I, 22mm Part number 3SU1000-5BF01-0AA0

Product Overview

Siemens 22 mm Key-Operated Selector Switch (Key Switch), 2-Position, Plastic (3SU1000-5BF01-0AA0) is a key-operated switch head from the SIRIUS ACT 3SU1 series. It provides a secure, lockable manual selector input for control panels or machine operator stations — requiring a key to switch between two positions (O / I). The switch is designed for rugged industrial environments and supports latching operation with key removal only in the “O” (off) position, helping prevent unauthorized or accidental switching.

Key Features

• 22 mm panel cutout — standard size for control-station mounting
• Plastic switch head — durable and suitable for industrial use
• Key-operated selector: 2 positions (O / I), 90° actuating angle, latching
• Comes with 2 keys (lock type SSG10) — security for control circuits
• Key can be removed only in the “O” (off) position — avoids unintentional operation
• Compact dimensions: ~29.5 mm outer diameter, suitable for 22.3 mm panel hole
• Protection class (switch-head front): IP66 / IP67 / IP69K — suitable for harsh and wash-down environments
• High mechanical durability — up to 1,000,000 switching operations

Technical Specifications

• Article Number: 3SU1000-5BF01-0AA0
• Product Type: Key-operated selector switch head (SIRIUS ACT 3SU1 series)
• Actuator / Cap Material: Plastic head; metal key
• Panel Cutout Diameter: 22 mm (mounting hole); tolerance up to 22.3 mm
• Switch Positions: 2 (O / I) — latching type, 90° turn
• Lock Number: SSG10 key set (2 keys included)
• Key Removal Position: Only in “O” (off) position
• Protection Rating (Front): IP66 / IP67 / IP69K — suitable for dust, splash, wash-down & harsh conditions
• Operating Temperature Range: –25 °C to +70 °C
• Mechanical Life: approx. 1,000,000 switching cycles
• Mounting Depth Behind Panel: ~25.4 mm
• Dimension (Head): ~29.5 mm outer diameter
• Application Category: Operator control / security key-switch (no internal contact module included) — requires compatible contact block or control wiring module

Applications

This key-operated selector switch head is ideal for secure manual control in industrial or machine-control panels: for example, enabling/disabling equipment, selecting operational modes, safe access control, or lockable start/stop control. It is suitable where manual control must be restricted via a key (e.g. maintenance mode, safety interlocks or authorized-use only circuits). Its robust IP protection rating makes it suitable even for wash-down or harsh ambient conditions, such as in food processing, utilities, or outdoor control enclosures.