RS Better World

Siemens SIRIUS ACT 3SU18 Series Twist Release Emergency Stop Push Button, Surface Mount, 22 mm Cutout, SPDT, IP66, IP67,

RS Stock No.:: 193-3859
Distrelec Article No.:: 302-15-402
Mfr. Part No.:: 3SU1851-0NC00-2AC2
Brand:: Siemens

Siemens SIRIUS ACT 3SU18 Series Twist Release Emergency Stop Push Button, Surface Mount, 22 mm Cutout, SPDT, IP66, IP67,

Subtotal (1 unit)*

Kr. 2 322,43

(exc. VAT)

Kr. 2 903,04

(inc. VAT)

FREE delivery for online orders over 750,00 kr

In Stock

Plus 1 unit(s) shipping from 29 June 2026
Plus 12 unit(s) shipping from 10 July 2026

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit
1 +	Kr. 2 322,43

*price indicative

Our Better World range features products that make it easy for you to make a greener product choice you can trust.

Click here to find out more.

RS Stock No.:: 193-3859
Distrelec Article No.:: 302-15-402
Mfr. Part No.:: 3SU1851-0NC00-2AC2
Brand:: Siemens

Specifications

Technical Reference

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Siemens
	Mount Type	Surface Mount
	Product Type	Emergency Stop Push Button
	Cutout Diameter	22mm
	Contact Configuration	SPDT
	Push Button Actuation	Twist Release
	Housing Material	Metal
	Series	SIRIUS ACT 3SU18
	Illuminated	No
	IP Rating	IP66, IP67, IP69
	Colour	Red
	Depth	112.5mm
	Hazardous Area Certification	No
	Length	89.4mm
	Standards/Approvals	No
	Better World Claim	Extended Product Life, Low Carbon Manufacture
	Better World Product	Yes
	Width	85mm
	Push Button Material	Plastic

	Select all
	Brand Siemens
	Mount Type Surface Mount
	Product Type Emergency Stop Push Button
	Cutout Diameter 22mm
	Contact Configuration SPDT
	Push Button Actuation Twist Release
	Housing Material Metal
	Series SIRIUS ACT 3SU18
	Illuminated No
	IP Rating IP66, IP67, IP69
	Colour Red
	Depth 112.5mm
	Hazardous Area Certification No
	Length 89.4mm
	Standards/Approvals No
	Better World Claim Extended Product Life, Low Carbon Manufacture
	Better World Product Yes
	Width 85mm
	Push Button Material Plastic

COO (Country of Origin):: DE

Siemens 3SU1 Series Emergency Stop Push Button, SPDT Contact Configuration, IP66/IP67/IP69 - 3SU1851-0NC00-2AC2

This emergency stop push button is intended for critical safety applications in industrial settings. With a sturdy design and the ability to handle high voltages, it ensures dependable performance during urgent situations. This device is suitable for integration into automation systems, offering operators an immediate method for stopping machinery in emergencies.

Features & Benefits

• Twist release mechanism allows for quick deactivation

• IP66, IP67, IP69 ratings ensure protection against dust and water

• Red colour enhances visibility in emergency scenarios

• Surface mount design facilitates easy installation

• SPDT configuration accommodates various application requirements

• Durable plastic construction provides longevity and resistance to impacts

Applications

• Utilised in manufacturing for machine control

• Suitable for automation systems requiring immediate shutdown

• Ideal for industrial machinery needing prompt safety intervention

• Commonly found in production lines and robotic operations

• Implemented in environments with strict safety regulations

How can it be mounted in my facility?

This device is designed for surface mounting, making installation on various panels or surfaces straightforward.

What voltage range does it support?

The switch functions effectively within a voltage range of 5V to 500V AC and DC.

Is this suitable for outdoor use?

Yes, with IP66, IP67, and IP69 ratings, it can endure harsh outdoor conditions.

How does the twist release mechanism work?

The twist release feature enables rapid disengagement, allowing for an immediate response during emergencies.

Can it be used with other control devices?

Yes, this push button can be integrated easily with other components in automated systems and control devices.