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Siemens 3RH2 Contactor Relay with 24V DC Coil, 10A Current, 4 NO Auxiliary Contacts, 600V DC, 690V AC 3RH2140-2LB40
Specifications
| Country of Origin | Germany |
|---|---|
| Brand | Siemens |
| Function | Self Locking |
| Length | 45mm |
| Model | 3RH2140-2LB40 |
| Depth | 69.5mm |
| Width | 73mm |
| Mount Type | DIN Rail |
| Series | 3RH2 |
| Maximum Operating Temperature | 70°C |
| Minimum Operating Temperature | -40°C |
| Terminal type | Spring Loaded |
| Contact Voltage | 600, 690V dc |
| Coil Voltage | 24V dc |
| Normal State Configuration | 4 NO |
| Contact Current | 10A |
| Number of Auxiliary Contacts | 4 |
| Auxiliary Contact Configuration | 4 NO |
| Operational Current Ie | 10A |
| Control Circuit Voltage Uc | 24V dc |
| Contactor Application | Railway |
| Pole and Throw Configuration | 4 |
Key Features
- Equipped with a 24V DC coil voltage for efficient control circuit operation.
- Supports contact voltages of 600V DC and 690V AC for versatile applications.
- Features spring loaded terminals and DIN rail mounting for quick installation.
- Designed with a self-locking function for secure operation.
- Suitable for railway applications and industrial automation control.
- Operates within a wide temperature range from -40°C to 70°C.
- Includes 4 NO (normally open) auxiliary contacts with snap-on expandable options.
- Meets IEC and EN standards 60947-1, 60947-4-1, and 60947-5-1 ensuring quality and safety.
Product Description
Siemens 3RH2140-2LB40 is a high-performance contactor relay equipped with a 24V DC coil and capable of handling operational currents up to 10A. Designed for demanding industrial environments, this relay provides stable contact performance even at low voltages and currents as low as 1 mA at 17 V.
The device features four normally open (4 NO) auxiliary contacts configured for flexible switching, with snap-on auxiliary switch blocks enabling expansion. Its spring-loaded terminals and DIN rail mounting type ensure easy installation and secure connections.
Operating temperature ranges from -40°C to 70°C, making it suitable for harsh conditions such as railway systems and automation applications. The relay conforms to international IEC and EN standards, guaranteeing robust quality and safe operation in industrial and control gear environments.
Dimensions are compact with a 69.5mm depth, 45mm length, and 73mm width, making it suitable for panel installations. The contactor supports both AC (690V) and DC (600V) contact voltages, enhancing its versatility.
Equipped with 24V DC coil voltage ensuring stable control circuit operation. 10A operational current capacity for various switching applications. Four normally open auxiliary contacts (4 NO) for flexible control. Snap-on auxiliary switch blocks allow expansion up to four contacts.
Spring loaded terminals provide secure and reliable connections. DIN rail mounting facilitates straightforward installation. Industrial-grade design compliant with IEC 60947 and EN 60947 standards. Wide operating temperature range from -40°C to 70°C suitable for harsh environments.
Compact form factor with dimensions 69.5 x 45 x 73 mm (Depth x Length x Width).
This Siemens Contactor Relay is ideal for industrial automation, railway controls, HVAC systems, and other electrical control applications requiring dependable switching, long service life, and electrical safety compliance.
For professional-grade contactors, explore the Electronics & Electricals category at EnvMart for Siemens products and related industrial control gear solutions.
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Frequently Asked Questions
The coil voltage of this contactor relay is 24V DC, ensuring efficient control circuit operation.
It supports contact voltages of 600V DC and 690V AC, providing versatility for various applications.
This model has a maximum operational current capacity of 10A, suitable for a range of switching applications.
It includes four normally open (4 NO) auxiliary contacts, allowing for flexible control options.
The dimensions are 69.5mm in depth, 45mm in length, and 73mm in width, making it compact for panel installations.
It features DIN rail mounting, which facilitates straightforward installation and secure connections.
The operating temperature range is from -40°C to 70°C, making it suitable for harsh environments.
This model uses spring-loaded terminals, ensuring secure and reliable connections.
It meets IEC and EN standards 60947-1, 60947-4-1, and 60947-5-1, ensuring quality and safety in operation.
This contactor relay is suitable for railway applications and industrial automation control, among others.
The self-locking function ensures secure operation, enhancing reliability in control applications.
Yes, the auxiliary contacts can be expanded using snap-on auxiliary switch blocks, allowing for additional control options.
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