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Siemens
3RH2911-1NF11
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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH2911-1NF11 |
| Alternative Part Number | 3RH29111NF11 |
| Manufacturer | Siemens |
| Product Type | Auxiliary switch |
| Suitable Applications | Contactor relay and power contactor |
| Protection Class | IP20 on the front |
| Ambient Operating Temperature | -25 to +60 °C during operation, -55 to +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 (5 V, 1 mA) |
| Insulation Voltage | Rated value of 690 V with degree of pollution 3 |
| Impulse Voltage Resistance | Rated value of 6 kV |
| Auxiliary Circuit | 1 Normally Closed (NC) contact, instantaneous |
| Mounting Type | Snap-on mounting |
| Connection Type | Screw terminal |
| Dimensions (W x H x D) | 36 mm x 37.5 mm x 43.7 mm |
| Conductor Cross-section Range | Fine-stranded with wire-end ferrule: 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| AWG Conductor Range | For auxiliary contacts: 2x (20 ... 16), 2x (18 ... 14) |
| Product Approvals | General Product Approval, EMC Declaration of Conformity, various international certifications |
| Special Features | Mirror contact according to IEC 60947-4-1 with 3RT2.2 |
| Commodity Code | 853650 |
The Siemens 3RH2911-1NF11 is a high-quality auxiliary switch designed to complement contactor relays and power contactors within industrial control systems. This solid-state component features a configuration of one normally open (NO) and one normally closed (NC) contact, providing versatility for various circuit control applications. With a compact design, it is suitable for size S00 and S0 contactors, ensuring a seamless fit into existing setups.
Crafted for durability, the 3RH2911-1NF11 boasts an impressive mechanical service life, capable of withstanding millions of switching cycles, making it a reliable choice for long-term use. The auxiliary switch operates within a wide ambient temperature range, ensuring consistent performance even in demanding environments.
Safety and compliance are at the forefront of its design, with an insulation voltage rated at 690V and a surge voltage resistance of 6kV, adhering to stringent industry standards. The switch's screw terminal connection type ensures a secure and stable electrical connection, which is essential for maintaining the integrity of the control system it serves.
The 3RH2911-1NF11 is part of the SIRIUS product family, known for its integration capabilities and engineered to facilitate straightforward installation. Its IP20 protection class rating on the front indicates a design that protects against solid objects, adding an extra layer of durability.
This auxiliary switch is an ideal solution for those seeking a robust and reliable component to enhance the functionality and efficiency of their industrial control systems.
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Frequently Asked Questions
What type of auxiliary switch is this?
This is a solid-state component auxiliary switch designed for use with contactor relays and power contactors, specifically for the Siemens SIRIUS size S00 and S0 range.
Can this auxiliary switch be used in any specific temperature range?
Yes, the auxiliary switch is suitable for operation within an ambient temperature range of -25°C to +60°C and can be stored in temperatures ranging from -55°C to +80°C.
What is the mechanical service life of this auxiliary switch?
The mechanical service life of the auxiliary switch is typically around 5 million switching cycles, indicating its durability and longevity in applications.
What is the insulation voltage rating for this auxiliary switch?
The insulation voltage rating with a degree of pollution 3 for this auxiliary switch is 690V.
What are the contact reliability specifications for this auxiliary switch?
The contact reliability for this auxiliary switch is such that there is only one incorrect switching operation out of 100 million switching operations at 5V, 1mA.
How many NO and NC contacts does this auxiliary switch have?
This auxiliary switch has 1 Normally Open (NO) contact and 1 Normally Closed (NC) contact.
What type of mounting does this auxiliary switch support?
The auxiliary switch supports snap-on mounting, which allows for easy and secure installation.
What are the dimensions of this auxiliary switch?
The dimensions of the auxiliary switch are 36mm in width, 37.5mm in height, and 43.7mm in depth.
What type of electrical connections does this auxiliary switch use?
This auxiliary switch utilises screw-type terminals for its electrical connections, accommodating various conductor cross-sections.
Does this auxiliary switch have any specific certifications or approvals?
Yes, the auxiliary switch complies with general product approvals and declarations of conformity, ensuring its reliability and safety in industrial applications.
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