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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH2911-1HA22 |
| Alternative Part Number | 3rh29111ha22 |
| Manufacturer | Siemens |
| Series | 3RH2911 |
| Type | Auxiliary Switch Block |
| Contact Configuration | 2NO/2NC (Normally Open/Normally Closed) |
| Rated Voltage | 690 V |
| Dimensions | 37.5 x 36 x 43.7 mm |
| Mounting Type | Snap-on mounting |
| Terminal Type | Screw terminal |
| Operating Temperature Range | -25 … +60 °C during operation, -55 … +80 °C during storage |
| Mechanical Operating Cycles | Typical 10,000,000 |
| Electrical Operating Cycles | Typical 200,000 at AC-15 at 230 V |
| Contact Reliability | One incorrect switching operation of 100 million switching operations (17 V, 1 mA) |
| Insulation Voltage | Rated value 690 V with degree of pollution 3 |
| Impulse Voltage Resistance | Rated value 6 kV |
| Protection Class | IP20 on the front |
| Compliance | Mirror contact acc. to IEC 60947-4-1, Positively driven operation acc. to IEC 60947-5-1 |
| Commodity Code | 85365080 |
The Siemens 3RH2911 Series Auxiliary Switch Block is a compact and reliable component designed for seamless integration with contactor relays and power contactors. This switch block features a configuration of 2 normally open (NO) and 2 normally closed (NC) contacts, providing versatility for various control and signalling applications within industrial settings.
Crafted with precision, the switch block boasts an insulation voltage rated at 690 V and an impulse voltage resistance of 6 kV, ensuring robust performance even in demanding electrical environments. The product is engineered to operate within an ambient temperature range of -25 to +60 degrees Celsius, making it suitable for a wide range of operating conditions.
With a mechanical operating life of typically 10 million cycles and an electrical operating life at AC-15 at 230 V of typically 200,000 cycles, this auxiliary switch block is built to last, offering reliability and durability for your control systems. The switch block's dimensions are 37.5 x 36 x 43.7 mm, and it features a snap-on mounting design for easy installation.
The switch block is designed with screw terminals for secure and straightforward electrical connections, accommodating various conductor cross-sections for auxiliary contacts. It also meets the IP20 protection class standard on the front, providing a basic level of protection against solid objects.
This Siemens auxiliary switch block is a testament to the brand's commitment to quality and efficiency, making it an essential component for industrial control applications that require precise and dependable switching operations.
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 switching functions in electrical circuits. It typically operates in conjunction with contactors or relays to facilitate the control of various circuit elements, such as indicating lights or other auxiliary devices.
Can this auxiliary switch block be used with both AC and DC currents?
Yes, the Siemens 3RH2911-1HA22 auxiliary switch block is designed to be used with both AC and DC currents, providing versatility in its application across different types of electrical systems.
What are the voltage and current specifications for this auxiliary switch block?
The auxiliary switch block is rated for an insulation voltage of 690 V and has an operational current of 10 A at AC-12 at 24 V and 230 V. It also has specific operational current ratings for AC-15 and DC-12 circuits.
What type of terminals does this auxiliary switch block have?
The auxiliary switch block comes equipped with screw-type terminals, which are designed for secure and reliable wire connections.
What is the typical mechanical and electrical service life of this auxiliary switch block?
The typical mechanical service life of the auxiliary switch block is around 10 million operating cycles, and the electrical endurance at AC-15 at 230 V is typically 200,000 cycles.
What are the dimensions of this auxiliary switch block?
The dimensions of the auxiliary switch block are 37.5 mm in height, 36 mm in width, and 43.7 mm in depth, making it compact and suitable for integration into various control systems.
What is the protection class of this auxiliary switch block?
The auxiliary switch block has a protection class of IP20 on the front, indicating a basic level of protection against solid objects.
Can this auxiliary switch block be mounted easily?
Yes, it is designed for snap-on mounting, which allows for quick and easy installation onto compatible devices.
What is the ambient temperature range for operating this auxiliary switch block?
The auxiliary switch block can operate within an ambient temperature range of -25 to +60 degrees Celsius, ensuring reliable performance in various environmental conditions.
Does this auxiliary switch block have mirror contact functionality?
Yes, it does feature mirror contact functionality according to IEC 60947-4-1 when used with 3RT2, which is important for safety applications.
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