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Siemens 3SB3603-1CA21 22mm Push-Pull Button - Latching Red

Siemens 3SB3603-1CA21 22mm Push-Pull Button, 40mm Mushroom Head, 1 NC, Red.

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ManufacturerSiemens

Part number3SB3603-1CA21

Actuator Type Push-Pull Button

Head Size 40mm Mushroom

Operation Latching, Pull-to-unlock

Contact Configuration 1 NC

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12-month warranty

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Veteran-owned

CAGE: 9NK75

22mm metal round unit 40mm red mushroom head Latching operation Pull-to-unlock reset 1 NC contact Screw terminals IP67 rated

Product description

The Siemens 3SB3603-1CA21 is a 22mm metal round complete unit featuring a 40mm mushroom-head push-pull button with a latching mechanism. This unit requires a pull-to-unlock action to reset. It is equipped with one Normally Closed (NC) contact and has a red actuator for clear identification.

This push-pull button is commonly used for emergency stop functions or other applications requiring a distinct manual reset. Its robust construction and IP67 rating make it suitable for demanding industrial environments. The screw terminals ensure a secure and reliable electrical connection.

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Technical specifications

Actuator Type	Push-Pull Button
Head Size	40mm Mushroom
Operation	Latching, Pull-to-unlock
Contact Configuration	1 NC
Terminal Type	Screw
Mounting Diameter	22mm
Enclosure Material	Metal
IP Rating	IP67

Common applications

Emergency stop circuits

Machine safety applications

Industrial control panels

Operator interfaces

High-visibility controls

Compatible systems

Industrial control panels Safety circuits Machine safety systems PLC systems

Also known as

Siemens 3SB3603-1CA21-0CC0 Red 40mm Push-Pull Button Latching Mushroom Button

Replaces / compatible with

This is a phased-out product. The preferred successor is the SIRIUS ACT 3SU1 series, specifically type 3SU1150-1BA20-1CA0. Always consult manufacturer documentation for exact compatibility.

Technical note

Expert tip

The 40mm mushroom head provides a large, easily accessible target for operator interaction, especially in emergency situations.

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Frequently asked questions

How is the Siemens 3SB3603-1CA21 push-pull button reset?

The Siemens 3SB3603-1CA21 push-pull button features a latching mechanism that requires a pull-to-unlock action to reset. This ensures that the button remains in its activated state until manually released.