Siemens SIRIUS 3TH4 Contactor Relay, 24 V dc Coil, 10 A, 9NO + 1NC
- RS Stock No.:
- 203-3922
- Mfr. Part No.:
- 3TH4391-0BB4
- Brand:
- Siemens
Subtotal (1 unit)*
£189.10
(exc. VAT)
£226.92
(inc. VAT)
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In Stock
- 7 unit(s) ready to ship from another location
- Plus 999,999,992 unit(s) shipping from 27 October 2025
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Units | Per unit |
|---|---|
| 1 + | £189.10 |
*price indicative
- RS Stock No.:
- 203-3922
- Mfr. Part No.:
- 3TH4391-0BB4
- Brand:
- Siemens
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Siemens | |
| Coil Voltage | 24 V dc | |
| Contact Current Rating | 10 A | |
| Series | 3TH4 | |
| Range | SIRIUS | |
| Normal State Configuration | 9NO + 1NC | |
| Number Of Auxiliary Contacts | 10 | |
| Terminal Type | Screw | |
| Length | 78mm | |
| Width | 55mm | |
| Depth | 135mm | |
| Maximum Operating Temperature | +55°C | |
| Control Voltage | 24 Vdc | |
| Minimum Operating Temperature | -25°C | |
| Load Current | 10A | |
| Mounting Style | DIN Rail | |
Select all | ||
|---|---|---|
Brand Siemens | ||
Coil Voltage 24 V dc | ||
Contact Current Rating 10 A | ||
Series 3TH4 | ||
Range SIRIUS | ||
Normal State Configuration 9NO + 1NC | ||
Number Of Auxiliary Contacts 10 | ||
Terminal Type Screw | ||
Length 78mm | ||
Width 55mm | ||
Depth 135mm | ||
Maximum Operating Temperature +55°C | ||
Control Voltage 24 Vdc | ||
Minimum Operating Temperature -25°C | ||
Load Current 10A | ||
Mounting Style DIN Rail | ||
- COO (Country of Origin):
- CN
Siemens 3TH4 Series Contactor Relay, 24V DC Coil Voltage, 10A Contact Current Rating - 3TH4391-0BB4
This contactor relay is an essential electrical control device that operates at a coil voltage of 24V DC. Designed for robust performance in industrial settings, this unit measures 78mm in length, 55mm in width, and 135mm in depth, making it compatible with standard DIN rail installations. With a maximum operating temperature of +55°C and a minimum of -25°C, it ensures reliability across various environments.
Features & Benefits
• Designed for DC operation, enhancing system efficiency
• Utilises screw terminal connections for secure electrical contact
• Fastening method allows easy snap-on mounting on DIN rail
• High operational safety with an extended service life
• Utilises screw terminal connections for secure electrical contact
• Fastening method allows easy snap-on mounting on DIN rail
• High operational safety with an extended service life
Applications
• Utilised in automation systems for controlling electrical circuits
• Effective in machinery and equipment for reliable operation
• Suitable for requiring precise switching functions
• Effective in systems demanding high-temperature resilience
• Effective in machinery and equipment for reliable operation
• Suitable for requiring precise switching functions
• Effective in systems demanding high-temperature resilience
What is the significance of having a combination of 9NO and 1NC contacts?
The combination offers greater flexibility for controlling multiple circuits, allowing for diverse configurations and improved functionality in automation systems.
How does the rated load current of 10A benefit operational efficiency?
The 10A rating ensures that the relay can manage significant electrical loads without performance degradation, thus supporting the reliability of electrical control devices.
What factors contribute to the durability of this unit?
Its design allows for operation across a broad temperature range and the inclusion of high-quality materials ensures a longer service life under typical industrial conditions.