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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH1911-2FB22 |
| Alternative Part Number | 3RH19112FB22 |
| Manufacturer | Siemens |
| Product Type | Auxiliary Switch Block |
| Contact Configuration | 1 NO + 1 NC and 1 NO + 1 NC Make-Before-Break |
| Connection Type | Cage Clamp Connection |
| Size | S00 |
| Suitable For | Auxiliary and Motor Contactor |
| Protection Class IP | IP20 |
| Ambient Operating Temperature Range | -25 … +60 °C |
| Storage Temperature Range | -55 … +80 °C |
| Mechanical Operating Cycles | Typically 10,000,000 |
| Electrical Operating Cycles at AC-15 | Typically 200,000 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 |
| Number of Auxiliary Contacts | 2 NC (1 instantaneous, 1 lagging), 2 NO (1 instantaneous, 1 leading) |
| Operating Current at AC-12 | 10 A at 24 V and 230 V, Maximum 10 A |
| Mounting Type | Snap-on Mounting |
| Dimensions (W x H x D) | 36.5 mm x 37.5 mm x 46 mm |
| Electrical Connection | Spring-loaded terminals |
| Conductor Cross-section | 2x (0.5 ... 1.5 mm²) finely stranded with conductor end processing, 2x (0.5 ... 2.5 mm²) without |
| AWG Conductors | 2x (20 ... 14) for auxiliary contacts |
| Mirror Contact | Yes, to IEC 60947-4-1 with 3RT1 |
| Positively Driven Operation | Yes, to IEC 60947-5-1 with 3RH1 |
The Siemens 3RH1911-2FB22 is a high-quality auxiliary switch block designed for seamless integration with contactor relays and power contactors. This component is part of the SIRIUS product family, renowned for its reliability and versatility in various industrial applications. With an IP20 protection class on the front, it ensures a safe operation in diverse working conditions.
This auxiliary switch block operates within an ambient temperature range of -25°C to +60°C, making it suitable for a wide range of environments. It boasts an impressive mechanical operating cycle of approximately 10 million operations, and an electrical operating cycle of around 200,000 at AC-15, 230V, highlighting its durability and longevity.
The 3RH1911-2FB22 features a cage clamp connection and is designed for snap-on mounting, which facilitates easy installation and maintenance. Its compact dimensions, with a width of 36.5mm, height of 37.5mm, and depth of 46mm, allow for efficient use of space inside control cabinets.
Equipped with spring-loaded terminals, the switch block can accommodate a variety of conductor cross-sections, ensuring flexible and secure connections. It also meets high safety standards, with mirror contact functionality according to IEC 60947-4-1 and positively driven operation according to IEC 60947-5-1, when used with compatible 3RT1 and 3RH1 devices, respectively.
The 3RH1911-2FB22 is a testament to Siemens' commitment to quality, offering a reliable solution for enhancing control system performance and ensuring operational excellence in industrial settings.
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Frequently Asked Questions
What is the purpose of an auxiliary switch block?
An auxiliary switch block is used to provide additional switching functions in electrical circuits. It can be used for signalling, interlocking, and control tasks within a contactor relay or power contactor setup.
Can this auxiliary switch block be used in safety applications?
Yes, the 3RH1911-2FB22 auxiliary switch block is designed with features such as mirror contacts and positively driven operation, making it suitable for use in safety-related applications when used with compatible devices.
What type of connections does this auxiliary switch block support?
The 3RH1911-2FB22 features cage clamp connections, which are a type of spring-loaded terminal that allows for quick and secure connection of wires without the need for tools.
What are the operating current specifications for this auxiliary switch block?
The operating current for the auxiliary contacts of this switch block is 10 A at AC-12 at both 24 V and 230 V, with a maximum of 10 A. For DC-13 applications, the operating current varies depending on the voltage, ranging from 6 A at 24 V to 0.1 A at 600 V with 3 current paths in series.
What are the dimensions of this auxiliary switch block?
The dimensions of the 3RH1911-2FB22 are 36.5 mm in width, 37.5 mm in height, and 46 mm in depth, making it compact and suitable for snap-on mounting in a variety of setups.
What is the insulation voltage rating for this part?
The insulation voltage rating for the 3RH1911-2FB22, with a degree of pollution 3, is 690 V.
How many mechanical operating cycles can this auxiliary switch block handle?
The 3RH1911-2FB22 is designed to handle typically 10,000,000 mechanical operating cycles, indicating its durability and reliability for long-term use.
What is the ambient temperature range for operating this auxiliary switch block?
The ambient temperature range for operating the 3RH1911-2FB22 is between -25 °C and +60 °C, ensuring stable performance across a wide range of environmental conditions.
Does this auxiliary switch block have any certifications or approvals?
Yes, the auxiliary switch block comes with general product approvals and may have specific certifications and approvals depending on the application and region. It is advisable to check the product documentation for detailed information on certifications.
What is the impulse voltage resistance of this part?
The impulse voltage resistance of the 3RH1911-2FB22 is rated at 6 kV.
