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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH2911-2GA04 |
| Manufacturer | Siemens |
| Product Brand Name | SIRIUS |
| Suitability for Use | Contactor relay |
| Protection Class IP on the Front | IP20 |
| Ambient Temperature (Storage) | -55°C to +80°C |
| Ambient Temperature (Operation) | -25°C to +60°C |
| Mechanical Service Life | 10,000,000 switching cycles |
| Electrical Endurance (AC-15 at 230V) | 200,000 switching cycles |
| Contact Reliability | One incorrect switching operation per 100 million operations (17V, 1mA) |
| Insulation Voltage | 690V |
| Surge Voltage Resistance | 6kV |
| Number of NC Contacts | 4 |
| Mounting Type | Snap-on mounting |
| Width | 36mm |
| Height | 41.5mm |
| Depth | 47.7mm |
| Electrical Connection Type | Spring-loaded terminals |
| Connectable Conductor Cross-Sections | 2x (0.5 ... 1.5 mm²) finely stranded with core end processing |
| Product Function (Mirror Contact) | No |
| Product Function (Positively Driven) | Yes, according to IEC 60947-5-1 |
| Typical Applications | Used in industrial automation systems for reliable auxiliary switching |
| Special Features | High contact reliability, compact design, easy installation |
The Siemens 3RH2911-2GA04 is a high-quality auxiliary switch block designed for use with contactor relays. This component features four normally closed (NC) contacts, making it ideal for applications requiring reliable and consistent switching operations. The switch block is part of the renowned SIRIUS series, known for its robust performance and durability.
Engineered to meet the demands of modern industrial environments, the 3RH2911-2GA04 offers a protection class of IP20 on the front, ensuring it is safeguarded against dust and other small particles. It operates efficiently within a wide ambient temperature range of -25°C to +60°C, and can be stored in temperatures as low as -55°C and as high as +80°C.
The auxiliary switch block boasts an impressive mechanical service life of up to 10 million switching cycles, and an electrical endurance of 200,000 cycles at AC-15, 230V. This ensures long-term reliability and minimal maintenance requirements. The switch block also features a high insulation voltage of 690V and a surge voltage resistance of 6kV, providing robust protection against electrical surges.
Installation is straightforward with its snap-on mounting design, and the spring-loaded terminals facilitate secure and efficient electrical connections. The switch block supports a variety of conductor cross-sections, including finely stranded and solid wires, with or without core end processing.
The Siemens 3RH2911-2GA04 is an essential component for enhancing the functionality and reliability of contactor relays in various industrial applications. Its superior build quality and performance make it a trusted choice for professionals seeking dependable auxiliary switching solutions.
Commonly Asked Questions
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Frequently Asked Questions
What is the primary function of this part?
This part is an auxiliary switch block designed for use with contactor relays, providing additional switching capabilities.
What type of terminals does this part use?
The part uses spring-loaded terminals for secure and reliable connections.
What is the protection class of this part?
The protection class on the front of this part is IP20.
What is the typical mechanical service life of this part?
The typical mechanical service life of this part is 10,000,000 switching cycles.
What is the rated insulation voltage for this part?
The rated insulation voltage for this part, with a degree of pollution 3, is 690 V.
What is the ambient temperature range for operation?
The ambient temperature range for operation is -25 to +60 degrees Celsius.
How many normally closed (NC) contacts does this part have?
This part has four normally closed (NC) contacts.
What is the electrical endurance at AC-15 at 230 V?
The electrical endurance at AC-15 at 230 V is typically 200,000 switching cycles.
What are the dimensions of this part?
The dimensions are 36 mm in width, 41.5 mm in height, and 47.7 mm in depth.
Is this part suitable for use with contactor relays?
Yes, this part is specifically designed for use with contactor relays.
Part conditions explained
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New unsealed: The product is in its original packaging, but the packaging has been opened or unsealed. It has never been used and should be in near pristine condition.
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