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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH2122-1BB40 |
| Alternative Part Number | 3RH21221BB40 |
| Manufacturer | Siemens |
| Contact Configuration | 4 Pole (2 NO + 2 NC) |
| Operating Voltage | 690 V ac |
| Rated Current | 10 A |
| Contactor Size | S00 |
| Terminal Type | Screw terminal |
| Insulation Voltage | Rated at 690 V with degree of pollution 3 |
| Surge Voltage Resistance | Rated value 6 kV |
| Protection Class | IP20 on the front |
| Shock Resistance | At DC 10g / 5 ms, 5g / 10 ms (rectangular impulse) and 15g / 5 ms, 8g / 10 ms (sine pulse) |
| Mechanical Service Life | Typical 30,000,000 switching cycles |
| Degree of Pollution | 3 |
| Commodity Code | 85364900 |
| Product Type Designation | Contactor relay |
The Siemens 3RH2122-1BB40 is a high-quality contactor relay designed for a wide range of industrial applications. This 4-pole device is engineered to facilitate reliable switching of control signals within electrical circuits. With a robust construction, it features 2 normally open (NO) and 2 normally closed (NC) contacts, making it versatile for various control logic requirements.
Rated for use at up to 690 V ac, this contactor relay can handle operating currents up to 10 A, ensuring compatibility with a diverse array of electrical loads. The unit is designed to fit into a size S00 contactor housing, and it comes equipped with screw terminals for secure and straightforward wiring.
The 3RH2122-1BB40 boasts an impressive mechanical service life, capable of up to 30 million switching cycles, which speaks to its durability and longevity in demanding industrial environments. Additionally, it has an insulation voltage rated at 690 V with a degree of pollution 3, and a surge voltage resistance of 6 kV, providing a reliable performance in various electrical conditions.
This contactor relay operates with a control supply voltage of 24 V DC, which is a common standard in industrial control systems, ensuring easy integration into existing setups. The device also features an auxiliary switch for added functionality, expanding its application scope.
Designed with attention to detail, the Siemens 3RH2122-1BB40 contactor relay is a dependable choice for engineers and technicians looking for a reliable solution to manage electrical circuits efficiently and safely.
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Frequently Asked Questions
What is the contact configuration for this contactor relay?
The contactor relay has a configuration of 2 normally open (NO) and 2 normally closed (NC) contacts.
Can this contactor relay be used with DC control circuits?
Yes, this contactor relay is designed for DC control circuits, with a rated control supply voltage of 24 V DC.
What is the maximum operating current for this contactor relay at AC-12?
The maximum operating current for the contactor relay at AC-12 is 10 A.
What are the ambient temperature limits for operating this contactor relay?
The contactor relay can operate within an ambient temperature range of -25 to +60 degrees Celsius.
What is the mechanical service life of this contactor relay?
The mechanical service life of the contactor relay is typically 30 million switching cycles.
What is the insulation voltage rating for this contactor relay?
The insulation voltage rating for the contactor relay, with a degree of pollution 3, is 690 V.
What is the size of this contactor relay?
The contactor relay is of size S00, which is a compact size suitable for various applications.
Is there any specific mounting position required for this contactor relay?
The contactor relay can be mounted in any position with +/-180° rotation possible on a vertical mounting surface and can be tilted forward and backward by +/- 22.5°.
What type of terminal does this contactor relay have for wire connection?
This contactor relay is equipped with screw terminals for secure and reliable wire connections.
How can I ensure short-circuit protection for the auxiliary circuit of this contactor relay?
For short-circuit protection of the auxiliary circuit up to 230 V, a miniature circuit breaker with C characteristic of 6 A; 0.4 kA is recommended.
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