Siemens Auxiliary Switch Block, 2 Contact, 1 NO/1 NC, SIRIUS, Snap-On, 10 A, 500V, 3RH1921-1DA11
- RS Stock No.:
- 745-0698
- Mfr. Part No.:
- 3RH1921-1DA11
- Manufacturer:
- Siemens
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Subtotal (1 unit)*
PHP2,041.28
(exc. VAT)
PHP2,286.23
(inc. VAT)
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In Stock
- 79 unit(s) ready to ship from another location
- Plus 126 unit(s) shipping from May 06, 2026
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Units | Per Unit |
|---|---|
| 1 - 4 | PHP2,041.28 |
| 5 + | PHP1,980.06 |
*price indicative
- RS Stock No.:
- 745-0698
- Mfr. Part No.:
- 3RH1921-1DA11
- Manufacturer:
- Siemens
Specifications
Technical data sheets
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Siemens | |
| Number of Contacts | 2 | |
| Product Type | Auxiliary Switch Block | |
| Normal State Configuration | 1 NO/1 NC | |
| Series | SIRIUS | |
| Contact Current | 10A | |
| Mount Type | Snap-On | |
| Terminal Type | Screw | |
| Contact Voltage | 500V | |
| Rated Insulation Voltage Ui | 500V | |
| Mechanical Durability | 10000000Cycles | |
| Operational Current Ie | 10A | |
| Minimum Operating Temperature | -25°C | |
| Mounting Location | Lateral | |
| Maximum Operating Temperature | 60°C | |
| Standards/Approvals | KC, IEC 60947-5-1, IEC 60947-4-1 | |
| Select all | ||
|---|---|---|
Brand Siemens | ||
Number of Contacts 2 | ||
Product Type Auxiliary Switch Block | ||
Normal State Configuration 1 NO/1 NC | ||
Series SIRIUS | ||
Contact Current 10A | ||
Mount Type Snap-On | ||
Terminal Type Screw | ||
Contact Voltage 500V | ||
Rated Insulation Voltage Ui 500V | ||
Mechanical Durability 10000000Cycles | ||
Operational Current Ie 10A | ||
Minimum Operating Temperature -25°C | ||
Mounting Location Lateral | ||
Maximum Operating Temperature 60°C | ||
Standards/Approvals KC, IEC 60947-5-1, IEC 60947-4-1 | ||
- COO (Country of Origin):
- RO
Siemens Auxiliary Switch Block, NO/NC Contacts, 80mm Height - Sirius Classic Series - 3RH1921-1DA11
Use this auxiliary switch block from Siemens to monitor the performance of your contactor. It's compatible with contactor relays and power contactors from the 3RH series, so fits easily into existing setups. The unit works by sending a signal to the control system if it detects any changes in the contactor. A broad operating temperature range between -25°C and +60°C means it can withstand harsh environments. You can use this component to signal indication and alarm systems in your control panel.
• Surge voltage resistance of 6kV to withstand current overloads
• Screw-type terminals for secure electrical connection
How durable is this auxiliary switch block?
This component has a mechanical service life of 10 million switching cycles, so you can rely on it for long-term performance. For added durability, it has a contact reliability rating of one incorrect switching operation in 100 million operations, minimising the risk of failure in demanding conditions.
How do I mount this auxiliary switch block?
Thanks to the snap-on mounting, you can simply clip it onto the contactor for tool-free installation. Its compact dimensions of 10 (W) x 80 (H) x 71mm (D) will fit easily in a busy setup.