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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH1911-2GA04 |
| Alternative Part Number | 3RH19112GA04 |
| Manufacturer | Siemens |
| Product Type | Auxiliary Switch Block |
| Number of Contacts | 4 NC (Normally Closed) |
| Rated Insulation Voltage | 690 V |
| Mounting Type | Snap On Mount |
| Terminal Type | Spring-type Terminal |
| 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 |
| Operating Current | 10 A at AC-12 / at 24 V and 230 V; 6 A at AC-15 / at 24 V and 230 V; Various ratings for DC |
| Width | 36.5 mm |
| Height | 37.5 mm |
| Depth | 46 mm |
| Protection Class | IP20 |
| Compliance | Mirror contact to IEC 60947-4-1, Positively driven operation to IEC 60947-5-1 |
| Commodity Code | 853650 |
The Siemens 3RH1911-2GA04 is a high-quality auxiliary switch block designed to enhance the functionality of contactor relays and power contactors. This component is engineered to provide reliable switching operations, with a mechanical service life of typically 10 million cycles and an electrical endurance of 200,000 cycles at AC-15, 230V. It features four normally closed (NC) contacts, ensuring a secure and stable connection in various industrial applications.
Constructed with a spring-type terminal, the 3RH1911-2GA04 facilitates easy and efficient wiring, making installation and maintenance straightforward. The switch block is suitable for use within a wide ambient temperature range, from -25°C to +60°C during operation, and can withstand storage temperatures from -55°C to +80°C, ensuring durability and performance stability in diverse working environments.
With an insulation voltage rated at 690V and a surge voltage resistance of 6kV, this auxiliary switch block meets stringent industry standards for electrical safety. Its compact design, featuring snap-on mounting, allows for space-saving integration into existing systems, with dimensions of 36.5mm in width, 37.5mm in height, and 46mm in depth.
The 3RH1911-2GA04 is IP20 rated on the front, providing a basic level of protection against solid objects and making it suitable for use in controlled environments. Its design also includes safety features such as mirror contact functionality according to IEC 60947-4-1 and positively driven operation in compliance with IEC 60947-5-1 when used with 3RT1 and 3RH1 contactors, respectively.
This auxiliary switch block is a reliable choice for those seeking to enhance the control and safety of their electrical systems, making it an essential component in the field of industrial automation.
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Frequently Asked Questions
What is the voltage rating for this auxiliary switch block?
The auxiliary switch block is rated for an insulation voltage of up to 690 V.
Can this auxiliary switch block be used with contactor relays?
Yes, it is suitable for use with contactor relays and power contactors.
What type of terminal connection does this auxiliary switch block have?
It features spring-type terminal connections for easy and secure wiring.
How many normally closed (NC) contacts does this auxiliary switch block have?
The 3RH1911-2GA04 auxiliary switch block has 4 normally closed (NC) contacts.
What is the IP protection class of this auxiliary switch block?
The protection class for the front of the auxiliary switch block is IP20.
What are the ambient temperature limits for operating this auxiliary switch block?
The ambient temperature range for operation is between -25°C and +60°C.
What is the mechanical service life of this auxiliary switch block?
The mechanical service life is typically around 10 million switching cycles.
What is the electrical endurance of this auxiliary switch block at AC-15, 230 V?
The electrical endurance at AC-15, 230 V is typically 200,000 switching cycles.
How does this auxiliary switch block mount to a device?
It is designed for snap-on mounting, making installation quick and straightforward.
Are there any specific approvals or certifications for this auxiliary switch block?
Yes, it has general product approvals and complies with relevant standards, ensuring its reliability and safety in industrial applications.
