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Specification & Description
The Siemens 3RH2911-2DA02 is a lateral auxiliary switch block designed for seamless integration with motor contactors, specifically the size S00. This component is engineered to enhance the functionality of contactor relays and power contactors by providing additional switching capabilities. It features two normally closed (NC) contacts, ensuring reliable operation within a broad range of industrial applications.
Constructed with durability in mind, the 3RH2911-2DA02 boasts an impressive mechanical operating life of approximately 10 million cycles and an electrical operating life at AC-15 at 230V of around 200,000 cycles. This robustness is complemented by a high level of contact reliability, with a low incidence of incorrect switching operations, making it a dependable choice for critical circuit control tasks.
The switch block is equipped with spring-loaded terminals, facilitating quick and secure connections while accommodating a variety of conductor cross-sections. It is designed for snap-on mounting, which allows for easy installation and maintenance. With a compact width of just 10mm, it integrates efficiently into electrical assemblies without demanding excessive space.
Safety is a paramount consideration in the design of the 3RH2911-2DA02, which is reflected in its insulation voltage rated at 690V and impulse voltage resistance of 6kV. The product also meets the IP20 protection class standard, ensuring protection against solid objects larger than 12mm and safeguarding the internal components from environmental factors.
The auxiliary switch block operates reliably within a temperature range of -25°C to +60°C during operation and can withstand storage temperatures from -55°C to +80°C. This temperature resilience ensures consistent performance even in challenging conditions.
Overall, the Siemens 3RH2911-2DA02 auxiliary switch block is a high-quality, reliable component that offers enhanced control and operational efficiency for a variety of industrial applications. Its technical sophistication and build quality make it a valuable addition to any electrical control system.
Commonly Asked Questions
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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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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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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 is the function of this auxiliary switch block?
The auxiliary switch block is designed to be used with motor contactors, providing additional switching capabilities. It is typically used to signal the status of the main contactor to control circuits, allowing for enhanced control and monitoring of the contactor's operation.
Can this auxiliary switch block be mounted on any contactor size?
No, this auxiliary switch block is specifically designed for size S00 motor contactors. It is not suitable for other sizes without the appropriate compatibility.
What type of terminals does this auxiliary switch block have?
This auxiliary switch block is equipped with spring-loaded terminals, which are designed for quick and secure connections without the need for tools.
What is the IP rating of this auxiliary switch block?
The auxiliary switch block has an IP20 protection class rating on the front, indicating that it is protected against solid objects larger than 12.5mm but not against water.
What is the ambient temperature range for operating this auxiliary switch block?
The auxiliary switch block can operate within an ambient temperature range of -25°C to +60°C, ensuring reliable performance in various working environments.
How many mechanical operating cycles can this auxiliary switch block withstand?
The auxiliary switch block is designed for a mechanical operating life of typically 10 million cycles, highlighting its durability and longevity.
What is the insulation voltage rating for this auxiliary switch block?
The insulation voltage rating for this auxiliary switch block, with a degree of pollution 3, is rated at 690V.
How many normally closed (NC) contacts does this auxiliary switch block have?
This auxiliary switch block has 2 normally closed (NC) contacts for auxiliary purposes.
What certifications does this auxiliary switch block hold?
The auxiliary switch block holds various certifications, ensuring compliance with international standards and regulations for safety and performance.
What is the surge voltage resistance of this auxiliary switch block?
The surge voltage resistance of this auxiliary switch block is rated at 6kV, providing robust protection against transient voltage spikes.
Part conditions explained
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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.
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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.
