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Siemens 3SF1234-1QV40-1BA1

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Marvo Stock ID MV-7VUQ
HS Code 85365080
SKU 3SF1234-1QV40-1BA1
Condition New unboxed
Warranty 12 months

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Specification & Description

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Specification & Description

Specification Description
Part Number 3SF1234-1QV40-1BA1
Alternative Part Number 3SF12341QV401BA1
Manufacturer Siemens
Product Designation Position switch with separate actuator with ASIsafe
Voltage Type DC
Insulation Voltage Rated Value 30 V
Degree of Pollution Class 3
Mechanical Operating Cycles Typical 1,000,000
Repeat Accuracy 0.1 mm
Contact Element Design Slow-action contacts
Number of NC Contacts 2 for auxiliary contacts
Switching Function Design Positive opening
Number of NO Contacts 0 for auxiliary contacts
Vibration Resistance 0.35 mm / 5g
Shock Resistance 30g / 11 ms
Ambient Operating Temperature Range -25 … +60 °C
Storage Temperature Range -40 … +80 °C
Sensor Width 31 mm
Enclosure Material Plastic
Operating Mechanism Design 5 directions of approach
Actuating Speed 0.4 … 0.5 mm/s
Minimum Actuating Force 20 N
Protection Class IP65
Mounting Position Any
Electrical Connection Design M12 plug, fixed, 4-pole
Plug-in Connection Design M12 plug, 4-pole: Pin 1 = ASI+, Pin 2 = not assigned, Pin 3 = ASI-, Pin 4 = not assigned
Optional Actuators Various models available for different mounting and actuating requirements
Safety Approval Functional Safety/Safety of Machinery, Declaration of Conformity, Test Certificates available

The Siemens 3SF1234-1QV40-1BA1 is a high-quality safety position switch designed to ensure operational integrity in a variety of industrial settings. This component is part of the SIRIUS product family, renowned for its reliability and performance. It features a separate actuator and is capable of detecting five different directions of approach, making it versatile for numerous applications.

Constructed with a robust plastic enclosure that conforms to EN 50047 standards, the switch is equipped with ASIsafe integrated electronics, enhancing its safety credentials. The AS-i status is clearly indicated with three different signals: F-IN1, F-IN2, and AS-i/FAULT, ensuring straightforward monitoring.

The switch boasts slow-action contacts with two normally closed (NC) circuits, which are designed to provide a positive opening operation. This is a critical feature for safety functions, as it ensures that the contacts will open in the event of a fault, thereby providing an additional layer of protection.

With an insulation voltage rated at 30V and a high degree of pollution class 3, the switch is built to withstand challenging industrial environments. It also offers impressive mechanical durability, with a typical service life of 1,000,000 switching cycles, and a repeat accuracy of 0.1 mm, ensuring consistent performance over time.

The unit is designed for flexibility in installation, with an any-orientation mounting position and a secure screw fixing method. The electrical connection is facilitated via a fixed M12 plug with a 4-pole design, streamlining the integration process into existing systems.

The 3SF1234-1QV40-1BA1 operates within a wide temperature range, from -25°C to +60°C during operation, and can be stored in temperatures ranging from -40°C to +80°C. This makes it suitable for a broad spectrum of climatic conditions.

Overall, the Siemens 3SF1234-1QV40-1BA1 is a dependable choice for those seeking a safety position switch that offers both versatility and assured performance in safeguarding machinery and processes.

Commonly Asked Questions

Is my order covered by a warranty?

Marvo provides a full 12-month warranty on all products, whatever the condition. For your peace of mind, all parts are ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. If you are unhappy with the part(s) you received and would like to request a return, you can do so by completing our quick and easy online form. Once we have received your Returns Request, a member of the team will be in touch to discuss this further with you. You can read more about our warranty policy here.

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What payment methods do you accept?

We accept card payments from all major credit, debit and Mastercard providers including Visa, American Express, Western Union, Paypal and bank transfers. Before you complete an order you will be prompted to input your payment details, at which point you can enter the relevant card information you wish to use for your transaction. If you are experiencing issues with your payment method then you can contact our team via email here. From there, you will be directed to the most relevant resource or person to help you complete your payment, get your order processed and ensure that your parts are on the way to your delivery address.

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Is Marvo a credible parts supplier?

Marvo is a highly credible supplier of industrial automation parts and components with dedicated hubs around the world offering industry-leading products and services. Marvo is committed to providing a quick, easy and reliable place to source your automation and control components. All purchases come as standard with a comprehensive 12-month return to base warranty meaning that, in just a few clicks, you can source critical parts more seamlessly than ever before. Click here to read an article on how Marvo is redefining convenience for automation and manufacturing professionals.

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Have steps been taken to ensure quality control?

Marvo takes pride in product quality and has put several measures in place to assure high levels of quality standards. For your peace of mind, all parts have been ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. Redefine convenience and secure priority delivery on all parts along with a comprehensive 12-month warranty. This is the smart new way to buy automation and control components.

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Frequently Asked Questions

What type of enclosure does this safety position switch have?

The safety position switch comes with a moulded-plastic enclosure, which conforms to the EN 50047 standard.

Can this switch be used with AS-Interface communication?

Yes, this switch is equipped with ASIsafe integrated electronics, making it compatible with AS-Interface communication systems.

What is the degree of protection provided by this switch?

This switch is rated with a protection class of IP65, ensuring a high level of protection against dust ingress and water jets.

What are the operating and storage temperature ranges for this switch?

The operating temperature range for this switch is -25 to +60 degrees Celsius, and the storage temperature range is -40 to +80 degrees Celsius.

How many mechanical operating cycles can this switch withstand?

The switch is designed to withstand typically 1,000,000 mechanical operating cycles, highlighting its durability.

What type of contacts does this switch feature?

This switch features slow-action contacts with 2 normally closed (NC) contacts for auxiliary purposes.

What is the repeat accuracy of this switch?

The switch boasts a repeat accuracy of 0.1 mm, ensuring precise operation.

What is the insulation voltage rating for this switch?

The insulation voltage rated value for this switch is 30 V.

What are the dimensions of this switch?

The switch has a width of 31 mm and a length that typically measures 118 mm.

What type of electrical connection does this switch use?

This switch utilises an M12 plug, fixed, 4-pole type of electrical connection.

Is there a specific mounting position required for this switch?

The switch can be mounted in any position, providing flexibility in installation.

What actuating speed and force are required for this switch?

The actuating speed is between 0.4 and 0.5 mm/s or m/s, and the minimum actuating force required is 20 N.

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Part conditions explained


We want your buying experience to be as seamless as possible. So, here are all of the product descriptions you will see when browsing Marvo, explained a little further:

New unsealed: The product is in its original packaging, but the packaging has been opened or unsealed. It has never been used and should be in near pristine condition.

New sealed: The product is sealed in its original packaging. It has never been opened or used, ensuring that it's in an untouched state.

New unboxed: The product does not come in its original packaging, but it has never been used and is in great working condition.

Refurbished: The product has been previously used, but it has undergone a thorough refurbishment process to restore it to a like-new or functional condition. Any defects or issues have been addressed, making it suitable for reuse.

Used: The product has been previously owned and has been used. It may show signs of wear and tear but is still functional and operational. The condition may vary depending on the specific item and its usage history.

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