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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH2911-2XA22-0MA0 |
| Alternative Part Number | 3RH29112XA220MA0 |
| Manufacturer | Siemens |
| Product Type | Auxiliary switch block |
| Mounting Type | Snap-on mounting |
| Number of Contacts | 4 (2 NO + 2 NC) |
| Current Path | 1 NO (Normally Open) |
| Terminal Type | Spring-loaded terminals |
| Suitable For | Contactor relay and power contactor |
| Protection Class IP | IP20 |
| Ambient Operating Temperature | -25 ... +60 °C |
| Storage Temperature | -55 ... +80 °C |
| Mechanical Operating Cycles | Typically 10,000,000 |
| Electrical Operating Cycles | Typically 200,000 at AC-15, at 230 V |
| Contact Reliability | 1 faulty switching per 100 million (17 V, 1 mA) |
| Insulation Voltage | Rated value 690 V with degree of pollution 3 |
| Impulse Voltage Resistance | Rated value 6 kV |
| Width | 36 mm |
| Height | 41.5 mm |
| Depth | 47.7 mm |
| Connectable Conductor Cross-sec | For auxiliary contacts: 2x (0.5 ... 1.5 mm²) with core end processing, 2x (0.5 ... 2.5 mm²) without |
| Safety Related Features | Mirror contact according to IEC 60947-4-1, positively driven operation according to IEC 60947-5-1 |
| Certificates/Approvals | General Product Approval, Declaration of Conformity, Test Certificates |
The Siemens 3RH2911-2XA22-0MA0 is a meticulously engineered auxiliary switch block designed to enhance the functionality of contactor relays and motor contactors. This component is part of the esteemed SIRIUS product line, renowned for its reliability and versatility in various industrial applications.
Crafted with precision, the switch block features a front-mounted design, housing 2 normally open (NO) and 2 normally closed (NC) contacts, with a current path configuration of 1 NO and 1 NC. This arrangement ensures flexibility and adaptability to a wide range of control and signalling circuits.
The switch block is equipped with spring-loaded terminals for secure and efficient connections, accommodating a range of conductor sizes. It is designed to snap onto existing equipment easily, facilitating quick installation and maintenance.
With an insulation voltage rated at 690V and a surge voltage resistance of 6kV, the 3RH2911-2XA22-0MA0 is built to withstand challenging electrical environments. Its robust construction ensures a mechanical service life of typically 10 million switching cycles and an electrical endurance of 200,000 cycles at AC-15 at 230V, highlighting its durability and long-term performance.
The compact dimensions of the switch block, with a width of 36mm, height of 41.5mm, and depth of 47.7mm, allow for efficient use of space within control cabinets. The unit also meets IP20 protection class standards on the front, ensuring protection against solid objects and enhancing its suitability for a variety of industrial settings.
The Siemens 3RH2911-2XA22-0MA0 operates reliably within a broad ambient temperature range, from -25°C to +60°C during operation, and -55°C to +80°C during storage, making it a resilient choice for diverse climatic conditions.
This auxiliary switch block is a testament to Siemens' commitment to quality and innovation, providing a reliable solution for enhancing control systems and ensuring efficient operation across a multitude of industrial applications.
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Frequently Asked Questions
What is the function of this auxiliary switch block?
The auxiliary switch block is designed to provide additional switching capabilities for contactor relays and power contactors. It features 2 normally open (NO) and 2 normally closed (NC) contacts, enhancing the control and feedback mechanisms in electrical circuits.
Can this auxiliary switch block be used with any contactor relay or power contactor?
It is specifically suitable for use with SIRIUS size S00 and S0 contactor relays and power contactors, ensuring compatibility and reliable operation within these specified devices.
What type of terminal connection does this auxiliary switch block have?
This auxiliary switch block is equipped with spring-loaded terminals, which provide a secure and maintenance-free electrical connection.
What is the insulation voltage rating for this auxiliary switch block?
The insulation voltage rating for this auxiliary switch block is 690 V, with a degree of pollution 3, ensuring it can safely isolate the control circuit from higher voltages.
What is the mechanical service life of this auxiliary switch block?
The mechanical service life of this auxiliary switch block is typically around 10 million switching cycles, indicating its durability and longevity in operation.
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 to +60 degrees Celsius, making it suitable for a variety of industrial environments.
What is the surge voltage resistance of this auxiliary switch block?
The surge voltage resistance of this auxiliary switch block is rated at 6 kV, providing protection against transient voltage spikes.
How does the contact reliability of this auxiliary switch block ensure accurate switching?
The contact reliability is such that there is only one faulty switching operation per 100 million at 17 V, 1 mA, which ensures a high level of accuracy and reliability in switching operations.
What are the dimensions of this auxiliary switch block?
The dimensions of the auxiliary switch block are 36 mm in width, 41.5 mm in height, and 47.7 mm in depth, making it compact and easy to integrate into various control systems.
Does this auxiliary switch block have any specific approvals or conformities?
Yes, it conforms to general product approvals and declarations of conformity, which may include standards such as IEC 60947-4-1 for mirror contacts and IEC 60947-5-1 for positively driven operations.
