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Siemens 3SU1050-4BM01-0AA0 Momentary 3-Position Key Switch

Siemens 3SU1050-4BM01-0AA0 22mm momentary 3-position key switch.

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ManufacturerSiemens

Part number3SU1050-4BM01-0AA0

Mounting 22 mm

Type Round

Material Metal

Finish Shiny

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Veteran-owned

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22mm mounting RONIS lock system Momentary action 3 switch positions Metal construction 2x45° actuating angle Key removal in 'O' position

Product description

The Siemens 3SU1050-4BM01-0AA0 is a RONIS key-operated switch for 22mm mounting. This round, metal, shiny switch features lock number SB30 and comes with two keys. It offers three switch positions (I>O<II) with momentary contact type, an actuating angle of 2x45°, and key removal exclusively in the 'O' position.

This momentary key switch is suitable for applications where brief activation of a function is required, such as starting a motor or initiating a specific process. It is commonly used in industrial control panels and machinery requiring precise, temporary control.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3SU1050-4BM01-0AA0. We provide reliable components for your industrial automation needs, ensuring you receive quality parts at competitive prices.

Technical specifications

Mounting	22 mm
Type	Round
Material	Metal
Finish	Shiny
Lock Number	SB30
Keys	2
Switch Positions	3 (I>O<II)
Operation	Momentary
Actuating Angle	2x45°
Key Removal	O

Common applications

Momentary control

Industrial machinery

Automation systems

Control panels

Process initiation

Temporary function activation

Compatible systems

Siemens 3SU1 Series control units

Also known as

Siemens momentary key switch 3SU1050-4BM01 Siemens RONIS 22mm momentary

Replaces / compatible with

Compatible with Siemens 3SU1 series control units and accessories.

Technical note

Expert tip

The key removal only in the 'O' position for the 3SU1050-4BM01-0AA0 ensures the momentary function is not accidentally left engaged.

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Frequently asked questions

What is the difference between latching and momentary action for this Siemens key switch?

The Siemens 3SU1050-4BM01-0AA0 is a momentary switch, meaning the circuit is only active while the key is held in position. When the key is released, the switch returns to its default state. This differs from latching switches which maintain their state until the key is turned again.