Siemens SIRIUS 3RH2 Contactor Relay, 110 V dc Coil, 10 A, 3NO + 1NC, 690 V ac
- RS Stock No.:
- 203-2156
- Mfr. Part No.:
- 3RH2131-1BF40
- Brand:
- Siemens
Subtotal (1 unit)*
£34.08
(exc. VAT)
£40.90
(inc. VAT)
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- Shipping from 11 November 2025
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Units | Per unit |
|---|---|
| 1 + | £34.08 |
*price indicative
- RS Stock No.:
- 203-2156
- Mfr. Part No.:
- 3RH2131-1BF40
- 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 | 110 V dc | |
| Contact Voltage Rating | 690 V ac | |
| Contact Current Rating | 10 A | |
| Range | SIRIUS | |
| Series | 3RH2 | |
| Normal State Configuration | 3NO + 1NC | |
| Number Of Auxiliary Contacts | 4 | |
| Auxiliary Contact Configuration | 3NO/1NC | |
| Terminal Type | Screw | |
| Length | 57.5mm | |
| Width | 45mm | |
| Depth | 73mm | |
| Minimum Operating Temperature | -25°C | |
| Load Current | 10A | |
| Load Voltage | 690V ac | |
| Mounting Style | DIN Rail | |
| Control Voltage | 110 Vdc | |
| Maximum Operating Temperature | +60°C | |
Select all | ||
|---|---|---|
Brand Siemens | ||
Coil Voltage 110 V dc | ||
Contact Voltage Rating 690 V ac | ||
Contact Current Rating 10 A | ||
Range SIRIUS | ||
Series 3RH2 | ||
Normal State Configuration 3NO + 1NC | ||
Number Of Auxiliary Contacts 4 | ||
Auxiliary Contact Configuration 3NO/1NC | ||
Terminal Type Screw | ||
Length 57.5mm | ||
Width 45mm | ||
Depth 73mm | ||
Minimum Operating Temperature -25°C | ||
Load Current 10A | ||
Load Voltage 690V ac | ||
Mounting Style DIN Rail | ||
Control Voltage 110 Vdc | ||
Maximum Operating Temperature +60°C | ||
- COO (Country of Origin):
- DE
Siemens 3RH2 Series Contactor Relay, 110V DC Coil Voltage, 10A Current Rating - 3RH2131-1BF40
This reversing contactor is a versatile component in the automation and electrical fields, built to efficiently control motor functions. Designed for industrial applications, it features a robust 3-pole configuration and operates seamlessly at a coil voltage of 24V DC. The compact dimensions of 68mm in height, 90mm in width, and 73mm in depth ensure easy integration into various setups.
Features & Benefits
• Facilitates motor reversing operations for enhanced functionality
• Compatible with 400V AC systems to meet diverse requirements
• Supports 9A current, suitable for significant load demands
• Designed for DIN rail mounting, simplifying installation
• Incorporates screw terminals for secure electrical connections
• Compatible with 400V AC systems to meet diverse requirements
• Supports 9A current, suitable for significant load demands
• Designed for DIN rail mounting, simplifying installation
• Incorporates screw terminals for secure electrical connections
Applications
• Utilised in automation systems for motor control
• Used in manufacturing lines for directional control of machinery
• Suitable for HVAC systems enabling fan motor reversal
• Used in material handling equipment for improved operational efficiency
• Used in manufacturing lines for directional control of machinery
• Suitable for HVAC systems enabling fan motor reversal
• Used in material handling equipment for improved operational efficiency
What are the thermal limits of operation for this component?
It can operate effectively within temperatures ranging from -25°C to +60°C, ensuring reliability in various environments.
How many operating cycles can it handle before maintenance is required?
This contactor typically offers a mechanical service life of around 10 million operating cycles, allowing for extensive use before service is needed.
What type of terminal connections does it use for the control circuit?
The reversing contactor employs screw-type terminals for both the main current and auxiliary circuits, ensuring stable connections.
What is the significance of the coil voltage rating?
The 24V DC coil voltage is essential for low-voltage control applications, enhancing safety and compatibility with existing control systems.
How does this reversing contactor manage short-circuit protection?
It is designed with specific fuse requirements to safeguard against short circuits, including a necessary gG fuse rating of 35A for the main circuit.