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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH2911-2DA20 |
| Alternative Part Number | 3RH29112DA20 |
| Manufacturer | Siemens |
| Product Brand Name | SIRIUS |
| Suitability for Use | Contactor relay and power contactor |
| Protection Class IP on the Front | IP20 |
| Ambient Temperature (Storage) | -55°C to +80°C |
| Ambient Temperature (Operation) | -25°C to +60°C |
| Mechanical Service Life | 10,000,000 switching cycles |
| Electrical Endurance (AC-15 at 230V) | 200,000 switching cycles |
| Contact Reliability | One incorrect switching operation per 100 million (17 V, 1 mA) |
| Insulation Voltage | 690 V |
| Surge Voltage Resistance | 6 kV |
| Number of NC Contacts | 0 |
| Number of NO Contacts | 2 |
| Mounting Type | Snap-on mounting |
| Width | 10 mm |
| Height | 64.8 mm |
| Depth | 66 mm |
| Electrical Connection Type | Spring-loaded terminal |
| Conductor Cross-Section (with end) | 2x (0.5 ... 1.5 mm²) |
| Conductor Cross-Section (without end) | 2x (0.5 ... 2.5 mm²) |
| AWG Conductor Cross-Section | 2x (20 ... 14) |
| Product Function (Mirror Contact) | Yes, with 3RT2 |
| Product Function (Forced Guidance) | No |
| Typical Applications | Motor contactors, auxiliary switch block for industrial automation systems |
The Siemens 3RH2911-2DA20 is a high-quality lateral auxiliary switch block designed for use with motor contactors, specifically the 3RH and 3RT series. This auxiliary switch block features two normally open (NO) contacts, providing reliable and efficient switching capabilities. It is equipped with spring-loaded terminals for secure and easy installation, ensuring a stable connection.
Engineered under the renowned SIRIUS brand, the 3RH2911-2DA20 is suitable for both contactor relays and power contactors. It boasts a robust protection class of IP20, making it suitable for various industrial environments. The switch block operates effectively within a wide ambient temperature range of -25°C to +60°C, and can be stored in temperatures ranging from -55°C to +80°C.
With a mechanical service life of up to 10 million operating cycles and an electrical endurance of 200,000 cycles at AC-15, 230V, this auxiliary switch block is built for longevity and dependable performance. It also features a high insulation voltage of 690V and a surge voltage resistance of 6kV, ensuring safe and stable operation.
The Siemens 3RH2911-2DA20 auxiliary switch block is an essential component for enhancing the functionality and reliability of your motor contactor systems, providing precise and consistent auxiliary switching operations.
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Frequently Asked Questions
What is the primary function of this part?
This part is a lateral auxiliary switch block designed for use with motor contactors, providing additional switching capabilities.
What type of terminals does this part use?
The part uses spring-loaded terminals for secure and reliable connections.
What is the protection class of this part?
The protection class on the front of this part is IP20.
What is the typical mechanical service life of this part?
The typical mechanical service life of this part is 10,000,000 switching cycles.
What is the rated insulation voltage for this part?
The rated insulation voltage for this part, with a degree of pollution 3, is 690 V.
What is the ambient operating temperature range for this part?
The ambient operating temperature range for this part is -25°C to +60°C.
How many NO (normally open) contacts does this part have?
This part has two normally open (NO) contacts.
What is the surge voltage resistance of this part?
The surge voltage resistance of this part is rated at 6 kV.
What is the typical electrical endurance of this part at AC-15 at 230 V?
The typical electrical endurance of this part at AC-15 at 230 V is 200,000 switching cycles.
What is the operational current of the auxiliary contacts at 24 V DC?
The operational current of the auxiliary contacts at 24 V DC is 10 A.
Part conditions explained
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