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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH1122-1KB40 |
| Alternative Part Number | 3RH11221KB40 |
| Manufacturer | Siemens |
| Product Type | Contactor Relay |
| Rated Operational Current | 10 A |
| Control Supply Voltage | 24 V dc |
| Contact Configuration | 2NO (Normally Open) / 2NC (Normally Closed) |
| Protection Class | IP20 |
| Size of Contactor | S00 |
| Insulation Voltage | Rated at 690 V with degree of pollution 3 |
| Ambient Operating Temperature Range | -25 … +60 °C |
| Mechanical Operating Cycles | Typically 30,000,000 |
| Control Circuit Voltage Type | DC |
| Pull-in Power | 2.3 W |
| Holding Power | 2.3 W |
| Surge Suppressor Design | With varistor |
| Mounting Type | Screw and snap-on mounting |
| Width | 45 mm |
| Height | 57.5 mm |
| Depth | 72 mm |
| Terminal Design | Screw-type terminals |
| Certifications/Approvals | CSA, UL, CCC, GL, LRS, BV, DNV, RMRS, RINA |
The Siemens 3RH1122-1KB40 is a robust contactor relay designed to facilitate the switching of auxiliary circuits in a variety of industrial applications. This component is engineered to handle a control supply voltage of 24 V dc, making it suitable for direct current operations. It features a compact size S00, which allows for efficient use of space within control cabinets.
With an IP20 protection class on the front, the device is safeguarded against solid objects larger than 12.5 mm, ensuring reliable performance in environments where incidental contact may occur. The contactor relay boasts an insulation voltage rated at 690 V, with a degree of pollution of 3, indicating its capability to withstand a certain level of contaminants that could potentially affect its operation.
The 3RH1122-1KB40 is designed to operate within a wide range of ambient temperatures, from as low as -25°C to as high as +60°C, making it versatile for use in various climatic conditions. It also has a high resistance to shock, withstanding impacts of 10g / 5 ms and 5g / 10 ms, which is critical for maintaining functionality in environments subject to vibrations or sudden jolts.
This contactor relay is equipped with 2 normally open (NO) and 2 normally closed (NC) contacts, providing flexibility in configuring control circuits. The contacts are rated for an operating current of up to 10 A at AC-12 and can handle various AC and DC loads with different rated values, ensuring compatibility with a wide range of applications.
Mounting the 3RH1122-1KB40 is made easy with its screw and snap-on options, and it can be installed in various positions, including a +/-180° rotation on a vertical mounting surface. The device also allows for a forward and backward tilt of +/- 22.5°, offering additional installation flexibility.
The contactor relay's screw-type terminals facilitate secure and reliable electrical connections for both auxiliary and control current circuits. It can accommodate a range of conductor cross-sections, ensuring compatibility with various wiring requirements.
With its combination of durability, versatility, and reliable performance, the Siemens 3RH1122-1KB40 contactor relay is an essential component for managing auxiliary circuits in industrial settings.
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Frequently Asked Questions
What is the contact configuration of this Siemens contactor relay?
The contactor relay has a contact configuration of 2 normally open (NO) and 2 normally closed (NC) contacts.
Can this contactor relay be used in safety applications?
Yes, it has safety-related data such as a proportion of dangerous failures with high and low demand rates according to SN 31920, and it is finger-safe for protection against electrical shock.
What is the rated control supply voltage for this device?
The rated control supply voltage for the contactor relay is 24 V dc.
What is the IP rating of this contactor relay?
This contactor relay has an IP rating of IP20, indicating protection against solid objects larger than 12.5 mm but not against liquids.
What is the mechanical operating cycle lifespan of this contactor relay?
The mechanical operating cycles as operating time of the contactor is typically 30,000,000 cycles.
What is the installation altitude limit for this contactor relay?
The contactor relay can be installed at an altitude of up to 2,000 meters above sea level.
What are the ambient temperature limits for operating this contactor relay?
The ambient temperature range for operating the contactor relay is between -25°C and +60°C.
What type of surge suppressor is integrated into this contactor relay?
The contactor relay is designed with a varistor as a surge suppressor.
What are the dimensions of this contactor relay?
The dimensions of the contactor relay are 45 mm in width, 57.5 mm in height, and 72 mm in depth.
What type of electrical connection does this contactor relay support?
The contactor relay supports screw-type terminals for auxiliary and control current circuits.
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