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3RH1921-1LA11
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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH1921-1LA11 |
| Alternative Part Number | 3RH19211LA11 |
| Manufacturer | Siemens |
| Part Type | Auxiliary Switch Block |
| Voltage | 690 V (Insulation) |
| Mounting | Snap-On Mount |
| Contact Configuration | 1NO/1NC |
| Current Rating | 10 A |
| Dimensions | 44 x 51 x 38 mm |
| Application | For motor contactors, cable entry at the top |
| Protection Class | IP20 |
| Ambient Temperature (Storage) | -55 … +80°C |
| Ambient Temperature (Operating) | -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 |
| Mounting Type | Snap-on mounting |
| Connections/Terminals | Screw-type terminals for auxiliary and control current circuit |
| Safety | Product function / mirror contact to IEC 60947-4-1 |
| Commodity Code | 853650 |
The Siemens 3RH1921-1LA11 is a robust and reliable Auxiliary Switch Block, designed to enhance the functionality of your motor contactors. With an insulation voltage of 690V, it ensures safe and efficient operation in various industrial environments. This switch block features a snap-on mounting design, making it easy to install and integrate into your existing systems. It comes with 1NO/1NC configuration, providing flexibility in controlling your motor contactors. The compact dimensions of 44 x 51 x 38 mm make it a space-efficient choice for your electrical panels. The Siemens 3RH1921-1LA11 is built to withstand a wide range of ambient temperatures, ensuring reliable performance in diverse operating conditions. With a mechanical operating cycle of 10,000,000, this auxiliary switch block is designed for longevity and consistent performance.
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Frequently Asked Questions
What is the voltage rating of this auxiliary switch block?
The Siemens 3RH1921-1LA11 auxiliary switch block has an insulation voltage rating of 690 V.
What is the mounting type for this part?
The Siemens 3RH1921-1LA11 auxiliary switch block is designed for snap-on mounting.
What are the dimensions of this auxiliary switch block?
The dimensions of the Siemens 3RH1921-1LA11 auxiliary switch block are 44 mm in width, 38 mm in height, and 51 mm in depth.
What is the operating temperature range for this part?
The Siemens 3RH1921-1LA11 auxiliary switch block can operate in temperatures ranging from -25°C to +60°C.
What is the contact reliability of this auxiliary switch block?
The Siemens 3RH1921-1LA11 auxiliary switch block has a contact reliability of one incorrect switching operation of 100 million switching operations (17 V, 5 mA).
What is the protection class of this part?
The Siemens 3RH1921-1LA11 auxiliary switch block has a protection class IP20 on the front.
What is the design of the electrical connection for this part?
The Siemens 3RH1921-1LA11 auxiliary switch block has screw-type terminals for auxiliary and control current circuit.
What is the operating current of the auxiliary contacts at AC-12?
The operating current of the auxiliary contacts of the Siemens 3RH1921-1LA11 auxiliary switch block at AC-12 is 10 A at 24 V and 230 V.
Does this part have a mirror contact to IEC 60947-4-1?
Yes, the Siemens 3RH1921-1LA11 auxiliary switch block does have a mirror contact to IEC 60947-4-1.
What is the type of the connectable conductor cross-section for auxiliary contacts?
The Siemens 3RH1921-1LA11 auxiliary switch block can connect to conductor cross-sections of 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) for auxiliary contacts.
