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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH1911-1HA22 |
| Alternative Part Number | 3RH19111HA22 |
| Manufacturer | Siemens |
| Product Type | Auxiliary Switch Block |
| Rated Voltage | 690 V |
| Number of Contacts | 4 (2NO/2NC) |
| Contact Type | Instantaneous |
| Connection Type | Screw Connection |
| Suitable For | Contactors for Switching Motors |
| Mounting Type | Snap-on Mounting |
| Mechanical Service Life | Typically 10,000,000 Switching Cycles |
| Electrical Endurance | Typically 200,000 Switching Cycles at AC-15, 230 V |
| Contact Reliability | One incorrect switching operation of 100 million switching operations (17 V, 5 mA) |
| Insulation Voltage | Rated value 690 V with degree of pollution 3 |
| Surge Voltage Resistance | Rated value 6 kV |
| Ambient Operating Temperature | -25 ... +60 °C during operation |
| Storage Temperature | -55 ... +80 °C |
| Protection Class | IP20 on the front |
| Commodity Code | 853650 |
| Dimensions (W x H x D) | 36.5 mm x 37.5 mm x 41.5 mm |
| Product Approvals | General Product Approval, Functional Safety / Safety of Machinery, Declaration of Conformity |
The Siemens 3RH1911-1HA22 is a high-quality auxiliary switch block designed to complement contactors used for motor switching applications. This switch block features a configuration of 2 normally open (NO) and 2 normally closed (NC) contacts, making it a versatile choice for various control and signalling circuits in industrial settings. With a rated insulation voltage of 690 V and a surge voltage resistance of 6 kV, it ensures reliable operation even under demanding conditions.
Crafted for durability, the 3RH1911-1HA22 boasts a mechanical service life of approximately 10 million switching cycles, and an electrical endurance that typically reaches 200,000 cycles at AC-15, 230 V. This robustness translates to a dependable performance and a reduced need for maintenance.
The switch block is designed with a screw connection, facilitating secure and stable wiring. It also features snap-on mounting for ease of installation, allowing for quick integration into existing systems without the need for extensive modifications. The compact dimensions of the switch block ensure it does not occupy excessive space within control cabinets, making it an efficient choice for space-constrained environments.
The 3RH1911-1HA22 is part of the SIRIUS product family, which is renowned for its quality and reliability in automation and control applications. This auxiliary switch block is suitable for use with both contactor relays and power contactors, providing a high degree of flexibility for engineers and technicians when designing control systems.
With its combination of reliability, ease of use, and Siemens' reputation for engineering excellence, the 3RH1911-1HA22 auxiliary switch block is an essential component for those seeking to enhance the functionality and efficiency of their motor control applications.
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Frequently Asked Questions
What is the voltage rating for this auxiliary switch block?
The auxiliary switch block is rated for a voltage of up to 690 V.
Can you describe the contact configuration of this component?
This component features a 2NO (normally open) + 2NC (normally closed) contact configuration.
What type of connection does this auxiliary switch block support?
It supports a screw connection for secure and reliable installation.
Is this auxiliary switch block suitable for use with motor contactors?
Yes, it is designed for use with contactors for switching motors, providing additional control and protection.
What is the typical mechanical service life of this switch block?
The typical mechanical service life of the switch block is 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 around 200,000 switching cycles.
What is the insulation voltage rating for this component?
The insulation voltage rating with a degree of pollution 3 is 690 V.
How many auxiliary contacts does this switch block have?
The switch block has 2 normally closed (NC) and 2 normally open (NO) auxiliary contacts.
What is the protection class of the front side of this auxiliary switch block?
The front side of the auxiliary switch block has a protection class of IP20.
What are the ambient temperature limits for operating this switch block?
The switch block can operate within an ambient temperature range of -25°C to +60°C.
What type of mounting does this auxiliary switch block utilise?
It utilises snap-on mounting for easy and quick installation.
Does this switch block have any certifications or approvals?
Yes, it has general product approvals and may have other specific certifications, which can be checked in the product documentation.
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