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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH2911-1GA31 |
| Alternative Part Number | 3RH29111GA31 |
| Manufacturer | Siemens |
| Series | SIRIUS |
| Type | Auxiliary Switch Block |
| Mounting | Snap-On Mount |
| Number of Contacts | 3 Normally Open (NO), 1 Normally Closed (NC) |
| Current Path | 1 NO, 1 NC, 1 NO, 1 NO |
| Rated Operational Voltage | 230 V ac |
| Rated Operational Current | 10 A |
| Protection Class | IP20 |
| Dimensions | 36 x 43.7 x 37.5 mm |
| Ambient Operating Temperature | -25 … +60 °C |
| Storage Temperature | -55 … +80 °C |
| Mechanical Operating Cycles | Typically 10,000,000 |
| Electrical Operating Cycles | At AC-15, at 230 V: Typically 200,000 |
| 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 |
| Electrical Connection | Screw-type terminals |
| Conductor Cross-section | Solid: 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) Finely stranded with conductor end processing: 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| AWG Conductors | For auxiliary contacts: 2x (20 ... 16), 2x (18 ... 14) |
| Positively Driven Operation | Yes, with 3RH2 contactor relays |
| Commodity Code | 853650 |
The Siemens 3RH2911-1GA31 is a high-quality auxiliary switch block designed to enhance the functionality of contactor relays. This component is part of the esteemed SIRIUS series and is engineered to provide reliable switching operations in a variety of industrial applications. With a configuration of 3 normally open (NO) and 1 normally closed (NC) contacts, it offers flexibility for integrating into control circuits.
Crafted for snap-on mounting, this auxiliary switch block is straightforward to install and boasts a compact design with dimensions of 36 x 43.7 x 37.5 mm, ensuring it does not require excessive space within your equipment. The screw terminals provide a secure and durable connection, making it suitable for rigorous industrial environments.
The switch block operates efficiently within an ambient temperature range of -25 to +60 degrees Celsius, ensuring consistent performance even in demanding conditions. It has an impressive mechanical operating life of approximately 10 million cycles and an electrical operating life at AC-15 at 230 V of around 200,000 cycles, highlighting its durability and longevity.
With an insulation voltage rated at 690 V and an impulse voltage resistance of 6 kV, the 3RH2911-1GA31 ensures a high level of electrical insulation and protection against voltage spikes. Its IP20 protection class rating on the front indicates that it is protected against solid objects larger than 12.5 mm, although it should be housed within a suitable enclosure for optimal protection.
This auxiliary switch block is a reliable choice for those seeking to enhance their control systems with a component that offers both versatility and robust performance.
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Frequently Asked Questions
What series does this auxiliary switch block belong to?
This auxiliary switch block is part of the SIRIUS series.
Can you describe the mounting method for this auxiliary switch block?
The auxiliary switch block is designed for snap-on mounting, making it easy to install onto the front of contactor relays.
What is the protection class of this auxiliary switch block?
The protection class for this auxiliary switch block is IP20, indicating a basic level of protection against solid objects.
What are the ambient temperature limits for storing and operating this auxiliary switch block?
The ambient temperature range for storage is -55 to +80 degrees Celsius, and for operating, it is -25 to +60 degrees Celsius.
What is the mechanical service life of this auxiliary switch block?
The mechanical service life of this auxiliary switch block is typically around 10 million switching cycles.
What is the electrical endurance of this auxiliary switch block at AC-15, 230 V?
At AC-15, 230 V, the electrical endurance is typically 200,000 switching cycles.
How reliable are the contacts in this auxiliary switch block?
The contacts in this auxiliary switch block are highly reliable, with a contact reliability of 1 faulty switching per 100 million operations at 17 V, 1 mA.
What is the insulation voltage rating for this auxiliary switch block?
The insulation voltage rating for this auxiliary switch block, with a degree of pollution 3, is 690 V.
What is the impulse voltage resistance of this auxiliary switch block?
The impulse voltage resistance of this auxiliary switch block is rated at 6 kV.
What is the configuration of the contacts in this auxiliary switch block?
The auxiliary switch block features 3 normally open (NO) contacts and 1 normally closed (NC) contact.
What is the operational current rating for the auxiliary contacts at AC-12?
The operational current rating for the auxiliary contacts at AC-12 is 10 A for both 24 V and 230 V.
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