This unique portfolio of Siemens 3SB3 series is a modular range of commanding and signalling devices for front plate mounting and rear conductor connection.
The 3SB3 series are round and have a mounting diameter of 22 mm and their actuator is supplied with a holder.
Complete units are offered, but only for the most commonly used applications.
This amazing range has the following standards:
•IEC 60947-1, EN 60947-1, IEC 60947-5-1, EN 60947-5-1, IEC 60947-5-5, EN 60947-5-5 for EMERGENCY-STOP mushroom pushbuttons

These units are available with screw terminals (box terminals), spring-type terminals or solder pins.

•molded plastic in flat, wound and square design

They can be mounted by a single person and are climate-proof (KTW 24) to suit industrial applications.
Their main purpose of existence is to act as safety emergency-stop pushbuttons and their switching frequency is approximately 1000 operating cycles.

The outer diameter of the actuating element of 3SB3500-1AA20 is 60 mm.
This is a typical emergency off/stop function device with the vibration resistance, according to IEC 60068-2-6, which is 20 ... 200 Hz: 5g.
The mechanical service life has been designed to be used up to 300000 cycles.
The ambient temperature during operation ranging from -25°C to +70°C, during storage however ranging from -40°C to +80°C.
The Emergency Stop Mushroom Pushbuttons represents worldwide standards, in particular:
•IP67 where a device can withstand immersion in one meter of water for 30 minutes

What is the different between a push button switch for an emergency stop and a general-purpose push button switch?

This product is in obsolescence mode and is due for discontinuation by the manufacturer. We recommend that you review the alternative range suggested by the manufacturer: SIRIUS ACT (3SU1). Please refer to the SIRIUS 3SB3 to ACT Cross-Reference guide located in the Technical Reference section.