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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH2911-2HA11 |
| Alternative Part Number | 3RH29112HA11 |
| Manufacturer | Siemens |
| Insulation Voltage | 690 V |
| Operating Current | 10 A |
| Dimensions | 36 x 52.6 x 41.5 mm |
| Mounting Type | Snap-on mounting |
| Number of Contacts | 1 Normally Open (NO) + 1 Normally Closed (NC) |
| Contact Reliability | One incorrect switching operation of 100 million switching operations (17 V, 1 mA) |
| Ambient Operating Temperature | -25 °C to +60 °C during operation, -55 °C to +80 °C during storage |
| Mechanical Operating Cycles | Typical 10,000,000 |
| Electrical Operating Cycles | Typical 200,000 at AC-15, at 230 V |
| Protection Class | IP20 on the front |
| Connection Type | Spring-loaded terminals |
| Suitable For Use With | Contactor relay and power contactor |
| Product Function | Mirror contact according to IEC 60947-4-1, Positively driven operation according to IEC 60947-5-1 |
| Certificates/Approvals | CE / UL / CSA / CCC |
The Siemens 3RH2911-2HA11 is a meticulously engineered auxiliary switch block designed to enhance the functionality of contactor relays and power contactors within the 3RH and 3RT series. This switch block is an essential component for industrial control systems, offering a reliable solution for various switching operations.
Crafted with precision, the 3RH2911-2HA11 boasts a compact form factor, measuring 36 x 52.6 x 41.5 mm, making it suitable for integration into space-constrained environments. Its spring-loaded terminal connection system ensures a secure and maintenance-free electrical connection, which is vital for consistent performance in industrial settings.
The switch block operates with an insulation voltage rated at 690 V, in line with degree of pollution 3, and has an impulse voltage resistance of 6 kV, providing robust protection against transient voltage spikes. It features one normally open (NO) and one normally closed (NC) contact, offering versatility in configuring control circuits.
With an impressive mechanical operating life of 10 million cycles and an electrical operating life of 200,000 cycles at AC-15 at 230 V, the Siemens 3RH2911-2HA11 is built to last, even in the most demanding applications. Its operational reliability is further underscored by its ability to perform with only one incorrect switching operation in 100 million, ensuring high precision in critical industrial processes.
The auxiliary switch block is designed for snap-on mounting, allowing for quick and effortless installation, and is rated with an IP20 protection class on the front side, ensuring protection against solid objects larger than 12.5 mm.
In summary, the Siemens 3RH2911-2HA11 auxiliary switch block is a high-quality, durable component that offers reliability and efficiency for industrial control systems, making it a valuable addition to any setup requiring precise control and switching capabilities.
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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Frequently Asked Questions
What is the purpose of an auxiliary switch block?
An auxiliary switch block, such as the Siemens 3RH2911-2HA11, is used to provide additional switching capabilities to contactor relays and power contactors. It enables the control of auxiliary circuits and can be used for status indication or interlocking purposes in various control and automation systems.
Can this auxiliary switch block be mounted onto existing equipment?
Yes, the auxiliary switch block is designed for snap-on mounting, which allows for easy and quick attachment to the front side of compatible Siemens 3RH and 3RT series contactor relays and power contactors.
What type of terminals does this auxiliary switch block have?
The Siemens 3RH2911-2HA11 features spring-loaded terminals, which provide a secure and maintenance-free electrical connection for both solid and stranded wires.
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 are the dimensions of this auxiliary switch block?
The dimensions of the Siemens 3RH2911-2HA11 are 36 mm in width, 41.5 mm in height, and 47.7 mm in depth, making it compact and suitable for use in a variety of control cabinet setups.
What is the operating temperature range for this auxiliary switch block?
The operating temperature range for the Siemens 3RH2911-2HA11 is between -25°C and +60°C, which allows it to function reliably in a wide range of environmental conditions.
How many mechanical operating cycles can this auxiliary switch block handle?
The Siemens 3RH2911-2HA11 is designed for a mechanical operating life of typically 10 million cycles, indicating its durability and longevity in repetitive use applications.
What is the contact configuration of this auxiliary switch block?
The contact configuration of the Siemens 3RH2911-2HA11 consists of one normally open (NO) and one normally closed (NC) contact, providing flexibility in control circuit design.
Is this auxiliary switch block suitable for use with safety applications?
Yes, the Siemens 3RH2911-2HA11 has mirror contacts according to IEC 60947-4-1 and positively driven operation according to IEC 60947-5-1, making it suitable for use in safety-related applications when used with compatible devices.
What certifications does this auxiliary switch block hold?
The Siemens 3RH2911-2HA11 holds several certifications, including CE, UL, and CSA, which confirm its compliance with international standards and its suitability for use in various markets.
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