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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH1921-1DA11 |
| Alternative Part Number | 3RH19211DA11 |
| Manufacturer | Siemens |
| Description | This is a Siemens Auxiliary Switch Block with 1NO/1NC configuration. It operates at a voltage of 440V. |
| Short Description | First Lateral Auxiliary Switch |
| Country of Origin | Not specified |
| Commodity Code | 85365080 |
| Suitability for Use | Contactor relay and power contactor |
| Protection Class IP on the Front | IP20 |
| Ambient Temperature During Storage | -55 to +80 °C |
| Ambient Temperature During Operation | -25 to +60 °C |
| Mechanical Service Life (Switching Cycles) Typical | 10,000,000 |
| Electrical Endurance (Switching Cycles) at AC-15 at 230 V Typical | 200,000 |
| Insulation Voltage with Degree of Pollution 3 Rated Value | 500 V |
| Surge Voltage Resistance Rated Value | 6 kV |
| Mounting Type | Snap-on mounting |
| Width | 10 mm |
| Height | 80 mm |
| Depth | 71 mm |
| Type of Electrical Connection for Auxiliary and Control Current Circuit | Screw-type terminals |
| Product Function Mirror Contact acc. to IEC 60947-4-1 | Yes |
| Product Function Positively Driven Operation acc. to IEC 60947-5-1 | No |
The Siemens 3RH1921-1DA11 is a highly reliable auxiliary switch block designed to enhance the functionality of your motor contactors. This first lateral auxiliary switch features 1 Normally Open (NO) and 1 Normally Closed (NC) contact, providing versatility in various industrial applications. With a screw terminal connection and a compact size that fits S0 to S12 contactors, it ensures easy installation and minimal space usage. The switch block operates efficiently in a temperature range of -25°C to +60°C, making it suitable for challenging environments. It boasts an impressive mechanical service life of 10 million switching cycles and an electrical endurance of 200,000 cycles at AC-15 at 230V. The 3RH1921-1DA11 is part of the renowned Siemens SIRIUS product line, known for its high-quality and durable industrial control components.
Commonly Asked Questions
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Frequently Asked Questions
What is the function of this auxiliary switch block?
The Siemens 3RH1921-1DA11 is an auxiliary switch block that is used to control the operation of contactors. It has 1 Normally Open (NO) and 1 Normally Closed (NC) contact.
What are the technical specifications of this part?
This auxiliary switch block operates at a voltage of 440V. It has an insulation voltage of 500V with a degree of pollution 3 and a surge voltage resistance of 6kV. It is suitable for use with contactor relays and power contactors.
What is the operating temperature range for this part?
The Siemens 3RH1921-1DA11 can operate between -25°C to +60°C. It can be stored in temperatures ranging from -55°C to +80°C.
What is the mechanical service life of this part?
The mechanical service life of the Siemens 3RH1921-1DA11 is typically 10 million switching cycles.
What type of connection does this part use?
The Siemens 3RH1921-1DA11 uses a screw-type terminal for its auxiliary and control current circuit.
What is the protection class of this part?
The Siemens 3RH1921-1DA11 has a protection class IP20 on the front.
What is the size of this part?
The Siemens 3RH1921-1DA11 has a width of 10mm, a height of 80mm, and a depth of 71mm.
What is the contact reliability of this part?
The Siemens 3RH1921-1DA11 has a contact reliability of one incorrect switching operation of 100 million switching operations (17 V, 5 mA).
Part conditions explained
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New unsealed: The product is in its original packaging, but the packaging has been opened or unsealed. It has never been used and should be in near pristine condition.
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New unboxed: The product does not come in its original packaging, but it has never been used and is in great working condition.
Refurbished: The product has been previously used, but it has undergone a thorough refurbishment process to restore it to a like-new or functional condition. Any defects or issues have been addressed, making it suitable for reuse.
Used: The product has been previously owned and has been used. It may show signs of wear and tear but is still functional and operational. The condition may vary depending on the specific item and its usage history.
