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Siemens 3SB3500-1AA20 22mm Emergency Stop Pushbutton

Siemens 3SB3500-1AA20 22mm emergency stop mushroom pushbutton, red.

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ManufacturerSiemens

Part number3SB3500-1AA20

Actuator Type Emergency Stop Mushroom Head

Size 60mm

Shape Round

Material Metal

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12-month warranty

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Same-day dispatch

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Veteran-owned

CAGE: 9NK75

22mm mounting size Large 60mm mushroom head Red emergency stop function Latching action Twist-to-unlatch mechanism Metal construction Phased-out product

Product description

The Siemens 3SB3500-1AA20 is a 22mm round metal emergency stop pushbutton featuring a large 60mm mushroom head. It is red, latches when pressed, and requires a twist to unlatch. This component includes a holder and is part of the 3SB3 series, now phased out, with the SIRIUS ACT 3SU1 series as its successor.

This emergency stop pushbutton is critical for safety systems in industrial machinery, automation lines, and control panels. Its prominent size and latching mechanism ensure immediate cessation of operation in hazardous situations.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3SB3500-1AA20. Secure this vital safety component from Stanlo's surplus inventory to ensure the safety of your operations at a reduced cost.

Technical specifications

Actuator Type	Emergency Stop Mushroom Head
Size	60mm
Shape	Round
Material	Metal
Color	Red
Function	Latching with twist-to-unlatch
Mount Diameter	22mm
Series	3SB3
Includes	Holder

Common applications

Industrial machinery

Safety controls

Automation lines

Control panels

Emergency shutdown systems

Machine guarding

Compatible systems

Siemens 3SB3 control stations SIRIUS 3SB3 enclosures Industrial control panels

Also known as

Siemens 3SB35 Red E-Stop Button Siemens 22mm mushroom head emergency stop

Replaces / compatible with

This is a phased-out product. The preferred successor components are Siemens 3SU1050-1JB20-0AA0 (pushbutton unit) and 3SU1550-0AA10-0AA0 (holder).

Technical note

Expert tip

The 60mm mushroom head provides a large, easily accessible surface for rapid activation in emergency situations, ensuring operator safety.

What happens next?

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Frequently asked questions

How does the Siemens 3SB3500-1AA20 emergency stop button operate?

The Siemens 3SB3500-1AA20 is a latching pushbutton; once pressed, it stays in that position to halt operations. It can be reset by twisting the mushroom head, which then releases the latch.