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Siemens 3SB3500-1LA20 22mm Metal Emergency Stop Pushbutton

Siemens 22mm metal round emergency stop pushbutton, 40mm mushroom head, key-operated.

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ManufacturerSiemens

Part number3SB3500-1LA20

Actuator Type Mushroom Pushbutton

Head Size 40mm

Mounting Diameter 22mm

Actuator Material Metal

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22mm metal round actuator 40mm mushroom head Key-operated emergency stop Latching mechanism S1 lock type Red color

Product description

The Siemens 3SB3500-1LA20 is a 22mm metal round actuator designed as an emergency stop mushroom pushbutton. It features a 40mm mushroom head and a key-operated switch with latching and key-unlocking mechanism. This component operates with a lock type S1 and includes a holder.

This pushbutton is suitable for critical safety applications across various industries, including manufacturing, heavy machinery, and process control, where immediate and reliable emergency stops are paramount. Its robust metal construction ensures durability in demanding environments.

As a veteran-owned surplus parts distributor, Stanlo Automation offers reliable access to essential industrial components like the Siemens 3SB3500-1LA20. We ensure quality and availability for your automation needs, backed by our commitment to service.

Technical specifications

Actuator Type	Mushroom Pushbutton
Head Size	40mm
Mounting Diameter	22mm
Actuator Material	Metal
Operation	Latching with key unlocking
Key Lock Type	S1
Color	Red
Illumination	No
Enclosure Rating	IP65 (with holder)

Common applications

Machine safety

Control panels

Emergency shutdown systems

Industrial machinery

Manufacturing equipment

Food and beverage

Automotive

Compatible systems

Compatible with Siemens 3SB3 series mounting holders and contact blocks.

Also known as

3SB3 500-1LA20 Siemens E-Stop Button 22mm Safety Pushbutton Metal E-Stop Actuator

Replaces / compatible with

This phased-out product has a successor in the SIRIUS ACT 3SU1 series, with 3SU1050-1HK20-0AA0 being the preferred replacement.

Technical note

Expert tip

Ensure proper IP65 sealing by using the correct Siemens holder (e.g., 3SB3900-2R) and mounting it securely to the control panel.

What happens next?

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Frequently asked questions

What are the key features of the Siemens 3SB3500-1LA20 emergency stop pushbutton?

The 3SB3500-1LA20 is a 22mm metal round emergency stop pushbutton with a 40mm red mushroom head. It features latching operation with key unlocking and an S1 lock type, ensuring a secure and reliable safety function.