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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH1911-1HA31 |
| Alternative Part Number | 3RH19111HA31 |
| Manufacturer | Siemens |
| Product Type | Auxiliary Switch Block |
| Contact Configuration | 3 Normally Open (NO), 1 Normally Closed (NC) |
| Connection Type | Screw Connection |
| Suitable For | Motor Contactors, 4-Pole |
| Protection Class IP | IP20 |
| Ambient Operating Temperature Range | -25°C to +60°C (Operating), -55°C to +80°C (Storage) |
| Mechanical Operating Cycles | Typically 10,000,000 |
| Electrical Operating Cycles at AC-15 | Typically 200,000 at 230V |
| Contact Reliability | 1 faulty switching per 100 million (17 V, 1 mA) |
| Insulation Voltage | Rated at 690V with degree of pollution 3 |
| Impulse Voltage Resistance | Rated at 6kV |
| Mounting Type | Snap-on Mounting |
| Dimensions (W x H x D) | 36.5 mm x 37.5 mm x 41.5 mm |
| Connection Cross-Section | 2x (0.5 ... 1.5 mm²) finely stranded with conductor end processing, 2x (20 ... 14) AWG conductors |
| Safety Features | Mirror contact to IEC 60947-4-1, Positively driven operation to IEC 60947-5-1 |
| Commodity Code | 853650 |
The Siemens 3RH1911-1HA31 is a high-quality auxiliary switch block designed to enhance the functionality of motor contactors. This component is engineered to facilitate both contactor relay and power contactor applications, ensuring reliable and efficient operation within a wide range of industrial settings.
Crafted with a robust screw connection, the 3RH1911-1HA31 features a configuration of 3 normally open (NO) and 1 normally closed (NC) contacts, conforming to the DIN EN50012 standard. This makes it a versatile choice for various control and signalling circuits. The switch block is rated for an insulation voltage of 690V and has an impulse voltage resistance of 6kV, highlighting its capability to withstand challenging electrical environments.
The auxiliary switch block is designed for snap-on mounting, which allows for quick and easy installation onto compatible devices. With dimensions of 36.5mm in width, 37.5mm in height, and 41.5mm in depth, it is compact enough to fit into tight spaces while still providing easy access for maintenance.
In terms of performance, the 3RH1911-1HA31 boasts a mechanical operating cycle of typically 10 million operations and an electrical operating cycle of 200,000 at AC-15, at 230V. This demonstrates the switch block's durability and long service life, making it a reliable choice for continuous use.
The auxiliary switch block operates effectively within an ambient temperature range of -25°C to +60°C, ensuring consistent performance even in varying climatic conditions. Its IP20 protection class rating on the front indicates a basic level of protection against solid objects, making it suitable for use in controlled environments.
Overall, the Siemens 3RH1911-1HA31 auxiliary switch block is a dependable and practical component for enhancing control systems in industrial applications. Its robust design, combined with its technical capabilities, makes it a valuable addition to any setup requiring precise and durable switching solutions.
Commonly Asked Questions
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Frequently Asked Questions
What is the function of an auxiliary switch block?
An auxiliary switch block is used to provide additional control, signalling, and interlocking functions in conjunction with contactors and relays. It typically includes multiple sets of contacts that can be configured as normally open (NO) or normally closed (NC) to suit various control circuit requirements.
Can this auxiliary switch block be used with any contactor?
The 3RH1911-1HA31 is designed to be compatible with specific Siemens motor contactors. It's important to check the compatibility with your contactor model to ensure proper fit and function.
How many contacts does this auxiliary switch block have?
The auxiliary switch block has a configuration of 3 normally open (NO) contacts and 1 normally closed (NC) contact.
What are the electrical operating cycles of this auxiliary switch block?
The auxiliary switch block is rated for typically 200,000 electrical operating cycles at AC-15, at 230 V.
What type of connection does the auxiliary switch block use?
This auxiliary switch block uses screw-type terminals for secure and reliable electrical connections.
What is the insulation voltage rating for this auxiliary switch block?
The insulation voltage rating for the auxiliary switch block is 690 V, with a degree of pollution 3.
What are the dimensions of the auxiliary switch block?
The dimensions of the auxiliary switch block are 36.5 mm in width, 37.5 mm in height, and 41.5 mm in depth.
How is the auxiliary switch block mounted?
The auxiliary switch block is designed for snap-on mounting, making it easy to install or remove from a contactor.
Does the auxiliary switch block have a mirror contact function?
Yes, the auxiliary switch block has a mirror contact function according to IEC 60947-4-1, which is important for safety applications.
What is the ambient temperature range for operating the auxiliary switch block?
The auxiliary switch block can operate within an ambient temperature range of -25 °C to +60 °C.
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