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Siemens
3RH1921-1HA31
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Check similar products or call us on +44 20 4570 3439 for assistance
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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH1921-1HA31 |
| Alternative Part Number | 3RH19211HA31 |
| Manufacturer | Siemens |
| Part Description | This is a Siemens Auxiliary Switch Block, designed with 3NO & 1NC, and operates at 230 V ac, 10 A. |
| Short Description | The part is an Auxiliary switch block, EN 50012 Screw terminal, specifically designed for motor contactors. |
| Country of Origin | Not specified |
| Commodity Code | 853650 |
| Ambient Temperature | During storage: -55 … +80°C, During operation: -25 … +60°C |
| Mechanical Operating Cycles | Typical 10,000,000 |
| Electrical Operating Cycles | Typical 200,000 at AC-15 / at 230 V |
| Insulation Voltage | Rated value 690 V |
| Impulse Voltage Resistance | Rated value 6 kV |
| Number of NC Contacts | 1 (instantaneous switching) |
| Number of NO Contacts | 3 (instantaneous switching) |
| Operating Current | 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 for auxiliary and control current circuit |
| Safety | Product function / mirror contact to IEC 60947-4-1: Yes |
| Certificates/Approvals | Not specified |
The Siemens 3RH1921-1HA31 is a robust and reliable Auxiliary Switch Block designed to enhance the functionality of your motor contactors. This 4-pole switch block, compliant with EN 50012, features 3 Normally Open (NO) and 1 Normally Closed (NC) contacts, providing versatile switching options for your industrial applications.
With a rated voltage of 230 V ac and a current rating of 10 A, this switch block is capable of handling demanding electrical loads. It utilises a screw terminal connection, ensuring secure and stable connectivity for your auxiliary and control current circuits.
The 3RH1921-1HA31 is designed for snap-on mounting, making installation straightforward and efficient. Its compact dimensions (44mm width, 38mm height, and 51mm depth) allow for easy integration into your existing system without requiring significant space.
This Siemens Auxiliary Switch Block is designed to withstand a wide range of operating temperatures, from -25°C to +60°C, and offers impressive mechanical and electrical operating cycles, ensuring long-lasting performance and reliability.
Whether you're upgrading your current system or building a new one, the Siemens 3RH1921-1HA31 Auxiliary Switch Block is a high-quality component that delivers exceptional performance and durability.
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Frequently Asked Questions
What is the function of this auxiliary switch block?
The Siemens 3RH1921-1HA31 is an auxiliary switch block designed for motor contactors. It is used to control the state of the contactor and provide additional switching functions.
What are the technical specifications of this part?
This auxiliary switch block operates at 230 V ac and 10 A. It has 3 normally open (NO) and 1 normally closed (NC) contacts. It also features a screw terminal design as per EN 50012.
What is the operating temperature range for this part?
The Siemens 3RH1921-1HA31 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 3RH1921-1HA31 has a protection class IP20 on the front, which means it is protected against solid objects larger than 12.5mm but is not protected against liquids.
What is the insulation voltage of this part?
The rated insulation voltage for the Siemens 3RH1921-1HA31, with a degree of pollution 3, is 690 V.
What is the mounting type for this part?
The Siemens 3RH1921-1HA31 uses a snap-on mounting type for easy installation.
What are the dimensions of this part?
The Siemens 3RH1921-1HA31 has a width of 44mm, a height of 38mm, and a depth of 51mm.
What type of electrical connection does this part use?
The Siemens 3RH1921-1HA31 uses screw-type terminals for auxiliary and control current circuits.
Does this part have any safety features?
Yes, the Siemens 3RH1921-1HA31 features a mirror contact to IEC 60947-4-1.
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