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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH1921-1CA10 |
| Alternative Part Number | 3RH19211CA10 |
| Manufacturer | Siemens |
| Voltage Rating | 690 V ac, 600 V dc |
| Contact Configuration | 1NO |
| Mounting Style | Snap-On |
| Width | 10 mm |
| Height | 38 mm |
| Depth | 51 mm |
| Connection Type | Screw-type terminals |
| Conductor Cross-Section | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| Product Function | Mirror contact to IEC 60947-4-1 |
| Commodity Code | 85365080 |
| Country of Origin | Not specified |
| Short Description | Front-side auxiliary switch, 1 NC contact |
| Detailed Description | The Siemens 3RH1921-1CA10 is a front-side auxiliary switch with a snap-on mounting style. It has a voltage rating of 690 V ac and 600 V dc and a contact configuration of 1NO. The switch is designed with screw-type terminals for auxiliary and control current circuit, and it can accommodate a conductor cross-section of 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²). The product function includes a mirror contact to IEC 60947-4-1. The part dimensions are 10 mm in width, 38 mm in height, and 51 mm in depth. |
The Siemens 3RH1921-1CA10 is a high-quality auxiliary switch block designed for optimal performance in industrial settings. This front-side auxiliary switch features a single normally open (NO) contact and is designed for snap-on mounting, ensuring easy installation. With a protection class IP20, it offers a degree of protection against touch by fingers and objects not greater than 12mm.
This Siemens auxiliary switch block is suitable for use with contactor relays and power contactors, making it a versatile addition to your automation system. It boasts an impressive mechanical service life of 10 million switching cycles and an electrical endurance of 200,000 switching cycles at AC-15 at 230V.
The 3RH1921-1CA10 operates efficiently within an ambient temperature range of -25 to +60 degrees Celsius during operation and -55 to +80 degrees Celsius during storage. It also features screw-type terminals for auxiliary and control current circuits, accommodating a wide range of conductor cross-sections.
This Siemens auxiliary switch block is a reliable and durable choice for your industrial automation needs, offering consistent performance and longevity.
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Frequently Asked Questions
What is the main function of this auxiliary switch block?
The Siemens 3RH1921-1CA10 is an auxiliary switch block primarily used for switching motors. It's designed to provide additional control and safety functions when used with contactors.
What are the technical specifications of this part?
This auxiliary switch block operates with an insulation voltage of 690V at AC and a surge voltage resistance of 6kV. It has a mechanical service life of approximately 10 million switching cycles and an electrical endurance of 200,000 switching cycles at AC-15 at 230V.
What type of connection does this part use?
The Siemens 3RH1921-1CA10 uses a screw-type terminal for its auxiliary and control current circuit.
What is the operating temperature range for this part?
This part can operate effectively in temperatures ranging from -25°C to +60°C. It can be stored in temperatures between -55°C and +80°C.
What is the protection class of this part?
The Siemens 3RH1921-1CA10 has a protection class IP20 on the front, providing a certain level of protection against solid objects and no protection against liquids.
What is the contact reliability of this part?
The contact reliability of the Siemens 3RH1921-1CA10 is quite high, with only one faulty switching operation per 100 million operations at 17V, 1mA.
What is the size of this part?
The Siemens 3RH1921-1CA10 has a width of 10mm, a height of 38mm, and a depth of 51mm.
What type of mounting does this part use?
This part uses snap-on mounting, making it easy to install and remove as needed.
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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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.
