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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RV1921-1M |
| Alternative Part Number | 3RV19211M |
| Manufacturer | Siemens |
| Product Type | Signalling Switch |
| Rated Operational Current | 10 A |
| Dimensions | 18 x 67 x 89.4 mm |
| Protection Class | IP20 |
| Mounting Type | DIN Rail Mount |
| Suitable Circuit Breaker Size | S0...S3 |
| Ambient Operating Temperature | -20...+60 °C |
| Auxiliary Circuit Contacts | 1 NC (instantaneous), 1 NO (instantaneous) |
| Electrical Connection | Screw-type terminals |
| Connectable Conductor Cross-sections | Solid: 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), Finely stranded with core end processing: 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), AWG conductors: 2x (18 ... 14) |
| Certificates/Approvals | CE, UL, CSA, CCC |
The Siemens 3RV1921-1M is a versatile signaling switch designed for seamless integration with circuit breakers ranging from size S0 to S3. This compact and robust component is engineered to provide reliable performance in a variety of industrial applications. With a current rating of 10 A and dimensions of 18 x 67 x 89.4 mm, it is an ideal solution for space-constrained environments.
Constructed to meet the IP20 protection class standard, the 3RV1921-1M ensures a high level of protection against solid objects, enhancing its durability and longevity in demanding settings. The signaling switch is also designed for convenient DIN rail mounting, facilitating easy installation and maintenance.
The 3RV1921-1M features both normally open (NO) and normally closed (NC) contacts, offering flexibility in signaling and control circuits. Its operating temperature range from -20°C to +60°C ensures reliable operation even in extreme conditions, making it suitable for a wide range of industrial applications.
This signaling switch is recognised for its compliance with international standards, holding certifications such as CE, UL, CSA, and CCC. Its screw-type terminals provide secure and reliable connections, accommodating a variety of conductor cross-sections for auxiliary contacts.
The Siemens 3RV1921-1M is a testament to quality and reliability, designed to meet the rigorous demands of industrial automation and control systems. It is a key component for professionals seeking a dependable signaling solution to enhance the safety and efficiency of their electrical systems.
Commonly Asked Questions
Is my order covered by a warranty?
Marvo provides a full 12-month warranty on all products, whatever the condition. For your peace of mind, all parts are ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. If you are unhappy with the part(s) you received and would like to request a return, you can do so by completing our quick and easy online form. Once we have received your Returns Request, a member of the team will be in touch to discuss this further with you. You can read more about our warranty policy here.
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Read more...Is Marvo a credible parts supplier?
Marvo is a highly credible supplier of industrial automation parts and components with dedicated hubs around the world offering industry-leading products and services. Marvo is committed to providing a quick, easy and reliable place to source your automation and control components. All purchases come as standard with a comprehensive 12-month return to base warranty meaning that, in just a few clicks, you can source critical parts more seamlessly than ever before. Click here to read an article on how Marvo is redefining convenience for automation and manufacturing professionals.
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Marvo takes pride in product quality and has put several measures in place to assure high levels of quality standards. For your peace of mind, all parts have been ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. Redefine convenience and secure priority delivery on all parts along with a comprehensive 12-month warranty. This is the smart new way to buy automation and control components.
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Frequently Asked Questions
What is the function of this signaling switch?
The signaling switch is designed to provide a separate tripped signal and short circuit alarm for circuit breakers of sizes S0 to S3. It has 1 normally open (NO) and 1 normally closed (NC) contact for each function, allowing for clear indication of the circuit breaker's status.
Can this signaling switch be used in extreme temperatures?
Yes, the signaling switch is suitable for operation in a range of ambient temperatures from -20°C to +60°C, making it versatile for various industrial environments.
What type of mounting does this signaling switch support?
The signaling switch supports plug-in fixing, which is a convenient mounting type that allows for easy installation and removal on DIN rails.
What are the dimensions of the signaling switch?
The dimensions of the signaling switch are 18 mm in width, 90 mm in height, and 68 mm in depth, ensuring it can fit into standard industrial control panels without taking up excessive space.
What is the maximum operating current for the auxiliary contacts of this switch?
The auxiliary contacts of the signaling switch can handle a maximum operating current of 10 A for AC-12 utilisation category, ensuring compatibility with a range of industrial applications.
What type of electrical connection does the signaling switch have?
The signaling switch features screw-type terminals for auxiliary and control current circuits, providing a secure and reliable connection for wiring.
What certifications does the signaling switch hold?
The signaling switch holds several certifications, including CE, UL, CSA, and CCC, indicating compliance with international safety and quality standards.
How many auxiliary contacts does the signaling switch have?
The signaling switch has 1 normally closed (NC) and 1 normally open (NO) contact for auxiliary purposes, providing flexibility in signaling and control circuits.
Is the signaling switch protected against dust and water ingress?
The signaling switch has a protection class of IP20 on the front, which provides protection against solid objects larger than 12.5 mm but not against water ingress.
What is the significance of the protection class IP rating for this switch?
The IP20 rating of the signaling switch indicates that it is protected against the ingress of solid objects larger than 12.5 mm, such as fingers, but is not protected against the ingress of water. This rating is suitable for indoor use where moisture is not a concern.
Part conditions explained
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New unsealed: The product is in its original packaging, but the packaging has been opened or unsealed. It has never been used and should be in near pristine condition.
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New unboxed: The product does not come in its original packaging, but it has never been used and is in great working condition.
Refurbished: The product has been previously used, but it has undergone a thorough refurbishment process to restore it to a like-new or functional condition. Any defects or issues have been addressed, making it suitable for reuse.
Used: The product has been previously owned and has been used. It may show signs of wear and tear but is still functional and operational. The condition may vary depending on the specific item and its usage history.
