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Siemens 3SU1050-4CF21-0AA0 Latching Key Switch, Key Removal I

Siemens 3SU1050-4CF21-0AA0 22mm latching key switch, key removal I.

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ManufacturerSiemens

Part number3SU1050-4CF21-0AA0

Mounting 22 mm

Type Round

Material Metal

Finish Shiny

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22mm mounting RONIS lock system Latching operation Metal construction 90° actuating angle Key removal in 'I' position Lock number 455

Product description

The Siemens 3SU1050-4CF21-0AA0 is a RONIS key-operated switch designed for 22mm mounting. This round, metal, shiny switch uses lock number 455 and includes two keys. It features two switch positions (O-I) with latching operation and an actuating angle of 90°. A notable feature is the key removal capability solely in the 'I' (On) position.

This switch is ideal for applications where the 'On' state needs to be secured with the key removed, preventing unauthorized operation or ensuring a specific condition remains active. It is used in industrial control and automation.

Stanlo Automation, a veteran-owned distributor of industrial surplus, offers the Siemens 3SU1050-4CF21-0AA0. We provide reliable and cost-effective components to keep your systems operational.

Technical specifications

Mounting	22 mm
Type	Round
Material	Metal
Finish	Shiny
Lock Number	455
Keys	2
Switch Positions	2 (O-I)
Operation	Latching
Actuating Angle	90°
Key Removal	I

Common applications

Industrial control

Machine safety

Automation systems

Electrical panels

Access control

Secure operation

Compatible systems

Siemens 3SU1 Series control units

Also known as

Siemens key switch lock 455 3SU1050-4CF21 Siemens RONIS 22mm switch

Replaces / compatible with

Compatible with Siemens 3SU1 series control units and accessories.

Technical note

Expert tip

The 3SU1050-4CF21-0AA0's specific lock number 455 and key removal in the 'I' position provide enhanced security for maintaining an 'On' state in critical industrial applications.

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Frequently asked questions

What is the significance of key removal being in the 'I' position for the Siemens 3SU1050-4CF21-0AA0?

Key removal in the 'I' position for the Siemens 3SU1050-4CF21-0AA0 means the switch remains locked in the 'On' state as long as the key is removed. This is often used for critical operational states that must be maintained.