ES21-AT1150

Safety Command Device, Emergency Stop Pushbutton, Rotary, IP54, -30 °C to 55 °C, ES21 Series

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: SICK
Product type: Industrial Switch Accessories
SVHC: No SVHC (04-Feb-2026)

Delivery and price
Units per pack	50
Price	73.76 €
Current stock	10+
Lead time	30 days

Datasheet

ES21-AT1150 ES21 **SAFETY COMMAND DEVICES** 

**ES21-AT1150 | ES21** SAFETY COMMAND DEVICES 

## Ordering information 

**Type Part no.** ~~lili...~~ ES21-AT1150 ~~Te~~ 5321166 Other models and accessories www.sick.com/ES21 

## C€ We: EA ~~L~~ 

## Detailed technical data 

## Features 

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|||
|---|---|
|Actuation directions|1|
|Emergency stop pushbutton (illuminable)|✔|
|Obstruction protection|✔|
|Release type|Rotary release|
|Protective collar|✔|

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## Functions 

**Safe series connection** None, only individual wiring (with diagnostics) 

## Mechanical data 

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|---|---|
|Dimensions|67 mm x 61 mm|
|Mounting diameter|22 mm|
|Weight|85 g|
|Housing material|Plastic|
|Mechanical life|50.000 switching cycles|

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## Ambient data 

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|---|---|
|Enclosure rating|IP54 (IEC 60529)|
|Ambient operating temperature|–30 °C ... +55 °C|
|Storage temperature|–50 °C ... +85 °C|

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## Classifications 

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|||
|---|---|
|eCl@ss 5.0|27371228|
|eCl@ss 5.1.4|27371228|
|eCl@ss 6.0|27371244|
|eCl@ss 6.2|27371244|
|eCl@ss 7.0|27371244|

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**Product data sheet | 2024-02-06 08:00:48 Subject to change without notice** 

**2 SAFETY SWITCHES | SICK** 

**ES21-AT1150 | ES21** SAFETY COMMAND DEVICES 

|**eCl@ss 8.0**|27371244|
|---|---|
|**eCl@ss 8.1**|27371244|
|**eCl@ss 9.0**|27371244|
|**eCl@ss 10.0**|27371291|
|**eCl@ss 11.0**|27371291|
|**eCl@ss 12.0**|27371291|
|**ETIM 5.0**|EC002034|
|**ETIM 6.0**|EC002034|
|**ETIM 7.0**|EC002034|
|**ETIM 8.0**|EC002034|
|**UNSPSC 16.0901**|39121545|



Dimensional drawing (Dimensions in mm (inch)) 

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ø 67<br>ø 31.5<br>42<br>19.4<br>1...7<br>**----- End of picture text -----**<br>


**2024-02-06 08:00:48 | Product data sheet Subject to change without notice** 

**SAFETY SWITCHES | SICK** 

**3** 

## SICK At A GlAnCe 

SICK is one of the leading manufacturers of intelligent sensors and sensor solutions for industrial applications. A unique range of products and services creates the perfect basis for controlling processes securely and efficiently, protecting individuals from accidents and preventing damage to the environment. 

We have extensive experience in a wide range of industries and understand their processes and requirements. With intelligent sensors, we can deliver exactly what our customers need. In application centers in Europe, Asia and North America, system solutions are tested and optimized in accordance with customer specifications. All this makes us a reliable supplier and development partner. 

Comprehensive services complete our offering: SICK lifetime Services provide support throughout the machine life cycle and ensure safety and productivity. 

For us, that is “Sensor Intelligence.” 

## WOrldWIde preSenCe: 

Contacts and other locations www.sick.com 

SICK AG | Waldkirch | Germany | www.sick.com

Updated at June 9, 2026

SICK is a globally recognized leader in factory and logistics automation technology, renowned for engineering advanced sensors and developing innovative digital services. Driven by a commitment to high precision, reliability, and versatility, the company provides the foundational components required to transform traditional manufacturing processes into intelligent, self-optimizing systems that adapt autonomously using real-time data. Our comprehensive selection of SICK products is heavily focused on their industry-leading sensing technologies. We offer a robust portfolio of light sensors designed to deliver exceptional accuracy and performance in demanding industrial environments. Furthermore, our extensive range features high-quality proximity sensors and switches, providing the dependable object detection essential for automated production, packaging, and material handling applications. To ensure seamless integration of these advanced sensor networks, our offering is complemented by specialized connectivity solutions such as SICK fiber optic lead assemblies. From consumer goods and electronics to logistics and automotive manufacturing, SICK delivers the cutting-edge automation technology necessary to maximize operational efficiency and maintain continuous, reliable performance across diverse industrial sectors.

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