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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH2911-1DA11 |
| Alternative Part Number | 3RH29111DA11 |
| Manufacturer | Siemens |
| Product Type | Auxiliary Switch Block |
| Rated Insulation Voltage | 690 V |
| Mounting Type | Snap-On Mount |
| Contact Configuration | 1NO (Normally Open) + 1NC (Normally Closed) |
| Protection Class | IP20 |
| Connection Type | Screw Terminals |
| Mechanical Operating Cycles | 10,000,000 cycles typical |
| Rated Operational Current | 10 A |
| Dimensions | 15 mm x 65.8 mm x 57.4 mm |
| Ambient Operating Temperature | -25 °C to +60 °C during operation, -55 °C to +80 °C during storage |
| Electrical Operating Cycles | 200,000 cycles typical at AC-15, at 230 V |
| Contact Reliability | 1 faulty switching per 100 million (17 V, 1 mA) |
| Insulation Voltage | Rated value of 690 V with degree of pollution 3 |
| Impulse Voltage Resistance | Rated value of 6 kV |
| Commodity Code | 853650 |
The Siemens 3RH2911-1DA11 is a high-quality auxiliary switch block designed to enhance the functionality of motor contactors. This component is engineered to facilitate reliable switching operations within industrial control systems. With a robust construction, it offers an insulation voltage rated at 690 V and is capable of withstanding impulse voltages up to 6 kV, ensuring durability and resilience in demanding environments.
This auxiliary switch block features a snap-on mounting design for ease of installation and a compact footprint with dimensions of 15 mm in width, 65.8 mm in height, and 57.4 mm in depth, making it suitable for integration into space-constrained areas. It is equipped with screw-type terminals, allowing for secure and straightforward connections.
The switch block is rated for 10 million mechanical operating cycles, highlighting its longevity and reliability. It also boasts a high level of contact reliability, with only one faulty switching operation expected per 100 million switching operations at 17 V and 1 mA, which is a testament to its precision and quality.
With an IP20 protection class rating on the front, the component is designed to be used in environments where a degree of protection against solid objects is necessary. It operates effectively within a temperature range of -25 to +60 °C, ensuring consistent performance across various operating conditions.
The 3RH2911-1DA11 auxiliary switch block is a testament to Siemens' commitment to quality and efficiency, providing a reliable solution for enhancing control circuit functionality in industrial applications.
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Frequently Asked Questions
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.
Can this auxiliary switch block be used with both contactor relays and power contactors?
Yes, this auxiliary switch block is suitable for use with both contactor relays and power contactors.
What is the protection class for the front of this auxiliary switch block?
The protection class for the front of the auxiliary switch block is IP20.
What are the ambient temperature limits for operating this auxiliary switch block?
The auxiliary switch block can operate within an ambient temperature range of -25 to +60 °C.
How many mechanical operating cycles can this auxiliary switch block typically withstand?
This auxiliary switch block can typically withstand 10,000,000 mechanical operating cycles.
What is the typical electrical endurance of this auxiliary switch block at AC-15, 230 V?
At AC-15, 230 V, the typical electrical endurance of the auxiliary switch block is 200,000 cycles.
What is the contact reliability of the auxiliary contacts in this switch block?
The auxiliary contacts in the switch block have a contact reliability of 1 faulty switching per 100 million operations at 17 V, 1 mA.
What are the dimensions of this auxiliary switch block?
The dimensions of the auxiliary switch block are 15 mm in width, 65.8 mm in height, and 57.4 mm in depth.
How is this auxiliary switch block mounted?
The auxiliary switch block is designed for snap-on mounting.
Does this auxiliary switch block have a mirror contact function?
Yes, the auxiliary switch block has a mirror contact function according to IEC 60947-4-1 when used with 3RT2.
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