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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.
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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.
