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Siemens 3RH2 Contactor Relay 24V DC Coil 4-Pole 10A 690V AC 2 NO/2 NC 3RH2122-1BB40
Specifications
| Country of Origin | Germany |
|---|---|
| Brand | Siemens |
| Length | 57.5mm |
| Model | 3RH2122-1BB40 |
| Depth | 73mm |
| Width | 45mm |
| Mount Type | DIN Rail |
| Series | 3RH2 |
| Maximum Operating Temperature | 60°C |
| Minimum Operating Temperature | -25°C |
| Terminal type | Screw |
| Number of Poles | 4 |
| Contact Voltage | 690V ac |
| Coil Voltage | 24V dc |
| Normal State Configuration | 2 NO/2 NC |
| Contact Current | 10A |
| Number of Auxiliary Contacts | 4 |
| Operational Current Ie | 10A |
| Control Circuit Voltage Uc | 690V ac |
| Pole and Throw Configuration | 2 NO/2 NC |
| Siemens 3RH1 Contactor Relay 2NO/2NC, 10 A Contact Rating, SIRIUS ClassicBrand | Siemens |
| WEG, CWCA0 Overload Relay 2 NO/2 NC, 10A Contact Rating, 24V dc 4Brand | WEG |
Key Features
- Designed for robust industrial control with 10A contact current rating.
- Equipped with a 24V DC coil for reliable actuation.
- Supports a 4-pole contactor configuration for flexible control schemes.
- Features 2 normally open and 2 normally closed contacts for versatile switching.
- Operates efficiently within -25°C to 60°C temperature range.
- Mounts easily on 35mm DIN rail with screw terminals.
- Has an ingress protection rating of IP20, ensuring safe operation against dust and accidental contact.
- Constructed to meet international standards including CSA, CE, IEC, UL, and more.
Product Description
Siemens 3RH2122-1BB40 Contactor Relay is built for high reliability and industrial automation control tasks. It features a 24V DC coil voltage and supports a 10A contact current rating at up to 690V AC, making it suitable for operating electric motors, lighting systems, and other heavy-duty applications. The device comes with a 4-pole design and a 2 NO/2 NC contact configuration for flexible circuit control.
This contactor relay is part of Siemens' SIRIUS Innovation Series and offers superior electrical safety with an integrated fuse link to protect against short circuits. Its robust construction ensures a mechanical service life of 30 million switching cycles, providing long-lasting operation in demanding industrial environments.
The relay operates reliably across a wide temperature range from -25°C to +60°C and has a touch-proof design certified with an IP20 ingress protection rating. Installation is simplified by compatibility with standard 35mm mounting rails using screws or snap-on clips, and it allows for rotation up to 180° on vertical surfaces for versatile placement.
Key technical standards compliance includes CSA, CCC, CE, EAC, IEC 60068-2-30, IEC 60529, IEC 61508, IEC 81346-2, and UL approvals, making it suitable for global industrial applications.
Applications range across industrial automation, manufacturing machinery, HVAC systems, and control panels requiring reliable switching and load handling capability at high voltages and currents.
Designed for controlling electric motors and lighting systems with reliable switching. High surge voltage resistance of 6kV to withstand electrical overloads. Contact reliability ensuring one faulty operation per 100 million switch cycles for dependable performance.
Integrated design for mounting flexibility and easy installation on standard DIN rails. Suitable for industrial, automation, manufacturing, and commercial electrical control applications.
Siemens' proven engineering and German manufacturing ensure this Contactor Relay delivers dependable performance and long operational life. Explore more automation control products and components on EnvMart for your industrial needs.
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Frequently Asked Questions
The Siemens 3RH2122-1BB40 has a contact current rating of 10A.
It operates with a coil voltage of 24V DC.
The maximum operating temperature is 60°C.
This model features a 4-pole configuration.
It has a configuration of 2 normally open (NO) and 2 normally closed (NC) contacts.
The dimensions are 57.5mm in length, 73mm in depth, and 45mm in width.
It has an ingress protection rating of IP20.
It mounts easily on standard 35mm DIN rails using screw terminals.
The contact voltage rating is 690V AC.
The minimum operating temperature is -25°C.
It is suitable for industrial automation, manufacturing machinery, HVAC systems, and control panels requiring reliable switching.
It meets several international standards including CSA, CE, IEC, and UL.
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