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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH1911-1FB22 |
| Alternative Part Number | 3RH19111FB22 |
| Manufacturer | Siemens |
| Product Type | Auxiliary Switch Block |
| Contact Configuration | 2 Normally Open (NO) + 2 Normally Closed (NC) contacts |
| Utilisation Category | For Contactor Relay and Power Contactor Applications |
| Mounting Type | Snap-on Mounting |
| Connection Type | Screw Connection |
| Operating Voltage | Up to 690 V Insulation Voltage with Degree of Pollution 3 |
| Impulse Voltage Resistance | Rated at 6 kV |
| Operating Current for AC-12 | 10 A at 24 V and 230 V |
| Operating Current for AC-15 | 6 A at 24 V and 230 V, 3 A at 400 V, 1 A at 690 V Rated Value |
| Operating Current for DC-13 | 0.3 A at 220 V |
| Mechanical Operating Cycles | Typically 10,000,000 |
| Electrical Operating Cycles | Typically 200,000 at AC-15, at 230 V |
| Ambient Operating Temperature | -25 to +60 °C during operation |
| Storage Temperature | -55 to +80 °C |
| Protection Class | IP20 on the front |
| Dimensions (W x H x D) | 36.5 mm x 37.5 mm x 41.5 mm |
| Approval | General Product Approval, Functional Safety / Safety of Machinery, Various Test Certificates |
The Siemens 3RH1911-1FB22 is a high-quality auxiliary switch block designed for seamless integration with contactor relays and power contactors. This component is engineered to enhance the functionality of your control systems, offering reliable switching capabilities with its configuration of 2 normally open (NO) and 2 normally closed (NC) contacts.
Crafted to meet the rigorous standards of industrial applications, the 3RH1911-1FB22 boasts a mechanical life of approximately 10 million operating cycles, ensuring longevity and consistent performance. Its electrical life is equally impressive, with around 200,000 operating cycles at AC-15, 230V, which speaks to its durability under load conditions.
The switch block operates within an ambient temperature range of -25°C to +60°C during operation, and -55°C to +80°C during storage, making it suitable for a wide range of environmental conditions. With an IP20 protection class on the front, it provides a basic level of protection against solid objects.
Installation is made easy with its snap-on mounting design, and the screw connection terminals allow for secure and reliable wiring. The compact dimensions of 36.5mm width, 37.5mm height, and 41.5mm depth make it an unobtrusive addition to your control panel.
The 3RH1911-1FB22 is designed with safety in mind, featuring mirror contacts in accordance with IEC 60947-4-1 and positively driven operation to IEC 60947-5-1 when used with 3RT1 and 3RH1 contactors, respectively.
This auxiliary switch block is an essential component for those seeking to maintain or enhance the efficiency and reliability of their control systems in commercial and industrial settings.
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 function of this auxiliary switch block?
The auxiliary switch block is designed for use with contactor relays and power contactors. It provides additional switching capabilities, allowing for the control and monitoring of various circuit functions within an electrical system.
Can this auxiliary switch block be used in safety-related applications?
Yes, the auxiliary switch block is suitable for use in safety-related applications, as it meets the necessary standards for functional safety and machinery safety.
What type of connections does this auxiliary switch block support?
The auxiliary switch block supports screw-type terminal connections, which are suitable for a range of conductor cross-sections and provide a secure and reliable electrical connection.
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 are the ambient temperature limits for operating and storing this auxiliary switch block?
The ambient temperature range for operating the auxiliary switch block is between -25°C and +60°C, while for storage, it can withstand temperatures from -55°C to +80°C.
What is the mechanical and electrical life expectancy of this auxiliary switch block?
The auxiliary switch block has a mechanical life expectancy of typically 10 million operating cycles and an electrical life expectancy of 200,000 cycles at AC-15 at 230V.
How does the auxiliary switch block ensure contact reliability?
The auxiliary switch block ensures contact reliability with a very low chance of incorrect switching operations, rated at one faulty switching per 100 million operations at specified voltage and current levels.
What are the dimensions of this auxiliary switch block?
The auxiliary switch block has a width of 36.5mm, a height of 37.5mm, and a depth of 41.5mm, making it compact and suitable for integration into various control systems.
Is there a preferred successor for this auxiliary switch block?
Yes, the preferred successor for this auxiliary switch block is the SIRIUS 3RH2 series, specifically the model >>3RH2911-1FB22<<.
What is the insulation voltage and impulse voltage resistance of this auxiliary switch block?
The auxiliary switch block has an insulation voltage rated at 690V with a degree of pollution 3 and an impulse voltage resistance rated at 6kV.
