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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH1921-1HA22 |
| Alternative Part Number | 3RH19211HA22 |
| Manufacturer | Siemens |
| Description | This is a Siemens Auxiliary Switch Block designed for motor contactors. It operates at a voltage of 690 V ac and 600 V dc. It features a snap-on mounting type and has 2NO/2NC contacts. The switch block is 4-pole and uses a screw terminal for connection. It is suitable for use with Size S0 to S3 contactors. |
| Short Description | Auxiliary switch block, 22, 2 NO + 2 NC, EN 50012, 4-pole, screw terminal, for motor contactors, Size S0 .. S3 |
| Country of Origin | Not specified |
| Commodity Code | 85365080 |
| Ambient Temperature | -25 to +60 °C during operation, -55 to +80 °C during storage |
| Protection Class IP on the Front | IP20 |
| Mechanical Service Life | Typical 10,000,000 switching cycles |
| Electrical Endurance | Typical 200,000 switching cycles at AC-15 at 230 V |
| Insulation Voltage | Rated value 690 V with degree of pollution 3 |
| Surge Voltage Resistance | Rated value 6 kV |
| Auxiliary Circuit | 2 NC contacts for auxiliary contacts (instantaneous contact), 2 NO contacts for auxiliary contacts (instantaneous contact) |
| Operating Current of the Auxiliary Contacts at AC-12 | 10 A at 24 V, 10 A at 230 V, maximum 10 A |
| Mounting Type | Snap-on mounting |
| Dimensions | Width: 44 mm, Height: 38 mm, Depth: 51 mm |
| Connections/Terminals | Screw-type terminals |
| Safety Related Data | Mirror contact acc. to IEC 60947-4-1: Yes, Positively driven operation acc. to IEC 60947-5-1: No |
The Siemens 3RH1921-1HA22 is a high-quality auxiliary switch block designed for optimal performance in industrial settings. This 4-pole, snap-on device is compatible with motor contactors of sizes S0 to S3. It features 2 Normally Open (NO) and 2 Normally Closed (NC) contacts, conforming to EN 50012 standards. The switch block operates efficiently within an ambient temperature range of -25 to +60 degrees Celsius, ensuring reliability in various working conditions. With an impressive mechanical service life of 10 million switching cycles and an electrical endurance of 200,000 switching cycles at AC-15 at 230V, this Siemens auxiliary switch block offers durability and longevity. Its screw terminals facilitate easy and secure connections, making it a practical choice for your automation needs. Please note, this is a phased-out product.
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Frequently Asked Questions
What is the description of this part?
This part is an Auxiliary Switch Block with a voltage rating of 690 V ac and 600 V dc. It has 2NO/2NC Snap-On configuration and is suitable for motor contactors of size S0 to S3.
What is the functionality of this part?
This part is designed to provide auxiliary switching for motor contactors. It has 2 Normally Open (NO) and 2 Normally Closed (NC) contacts, making it versatile for various industrial applications.
What are the technical specifications of this part?
The part has an insulation voltage of 690V with a degree of pollution 3. It has a surge voltage resistance of 6kV. The part is designed for snap-on mounting and has screw-type terminals for auxiliary and control current circuit.
What is the operating temperature range for this part?
The part can operate effectively in a temperature range of -25 to +60 degrees Celsius. It can be stored in temperatures ranging from -55 to +80 degrees Celsius.
What is the mechanical service life of this part?
The part has a typical mechanical service life of 10 million switching cycles.
What is the electrical endurance of this part?
The part has an electrical endurance of 200,000 switching cycles at AC-15 at 230V.
What is the contact reliability of this part?
The part has a contact reliability of one incorrect switching operation of 100 million switching operations (17 V, 5 mA).
What is the size of this part?
The part has a width of 44mm, a height of 38mm, and a depth of 51mm.
What type of connection does this part use?
The part uses screw-type terminals for auxiliary and control current circuit.
Does this part have a mirror contact according to IEC 60947-4-1?
Yes, the 3RH1921-1HA22 part does have a mirror contact according to IEC 60947-4-1.
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