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Siemens 3SU1050-4FF21-0AA0 O.M.R Red Key Switch, Key Removal I

Siemens 3SU1050-4FF21-0AA0 22mm O.M.R. red key switch, key removal I.

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ManufacturerSiemens

Part number3SU1050-4FF21-0AA0

Mounting 22 mm

Type Round

Material Metal

Finish Shiny

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CAGE: 9NK75

22mm mounting O.M.R. key system Latching operation Metal construction Red housing 90° actuating angle Key removal in 'I' position

Product description

The Siemens 3SU1050-4FF21-0AA0 is an O.M.R. key-operated switch for 22mm mounting. This round, metal, shiny switch is red, features lock number 73037, and comes with two keys. It provides two switch positions (O-I) with latching operation and an actuating angle of 90°. Crucially, the key can only be removed in the 'I' (On) position.

This specific configuration is useful for applications where the 'On' state must be secured by the key, ensuring continuous operation or a locked-in status. The red color aids in visual identification.

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Technical specifications

Mounting	22 mm
Type	Round
Material	Metal
Finish	Shiny
Color	Red
Lock Number	73037
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

Secure 'On' state

Access control

Compatible systems

Siemens 3SU1 Series control units

Also known as

Siemens red key switch lock 73037 3SU1050-4FF21 Siemens O.M.R. switch key removal I

Replaces / compatible with

Compatible with Siemens 3SU1 series control units and accessories.

Technical note

Expert tip

For applications requiring a sustained 'On' state that must be locked, the Siemens 3SU1050-4FF21-0AA0's key removal in the 'I' position provides a secure mechanical interlock.

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Frequently asked questions

What is the primary advantage of the Siemens 3SU1050-4FF21-0AA0 with key removal in the 'I' position?

The Siemens 3SU1050-4FF21-0AA0 allows the key to be removed only when the switch is in the 'I' (On) position. This ensures the switch remains active and secured in its 'On' state, preventing accidental deactivation.