3RT2018-2FB42 SIEMENS Contactor Relay

Review SIEMENS Contactor Relay

The Siemens 3RT2018-2FB42 contactor relay is a versatile and reliable electrical component designed for controlling heavy loads in various industrial automation applications. This contactor is a part of Siemens' RSeries, which is known for its robust design, high performance, and ease of use.

The 3RT2018-2FB42 contactor is a 2-pole, normally open (NO) contactor, meaning it can be used to connect or disconnect two circuits when an external coil is energized. It is rated for a continuous current of 20 Amperes at a voltage of 230 Volts AC, making it suitable for controlling medium-sized loads. The contactor's contact area is silver-plated, ensuring low contact resistance and minimal electrical wear, which results in long contact life and excellent reliability.

This contactor is equipped with a 15A, 230V AC, 50Hz coil, which can be easily energized using a control signal. The coil has a fast operating time of 15 milliseconds, ensuring quick response to control signals. The contactor also features a built-in overload relay, which provides protection against short-circuits, overloads, and other faults. The overload relay trips when the current exceeds the rated value, and it can be reset manually once the fault has been corrected.

The Siemens 3RT2018-2FB42 contactor is designed for rugged industrial applications, and it is built to withstand harsh environments. It is suitable for operation in temperatures ranging from -25 C to 70 C, and it is protected against ingress of dust and water according to IP20 standard. The contactor's terminals are clearly labeled and easily accessible, making wiring and installation a straightforward process.

This contactor is also available with various optional accessories, such as pilot lamps, test switches, and auxiliary contacts, which can be added to enhance its functionality according to specific application requirements. The Siemens 3RT2018-2FB42 contactor is a high-quality and reliable solution for controlling heavy loads in industrial automation applications, and it offers excellent value for money.

Siemens 3RT2018-2FB42 Contact Relay: A Comprehensive Analysis

The Siemens 3RT2018-2FB42 contactor relay is a popular choice for industrial automation applications due to its robust design and reliable performance. In this analysis, we will discuss the key features, advantages, and disadvantages of this contactor relay to help you make an informed purchasing decision.

1. Contact Rating: The contactor relay has a contact rating of 10A at 250V AC and 10A at 60V DC.

2. Coil Voltage: The coil voltage ranges from 115V AC to 240V AC and 12V DC to 24V DC.

3. Operating Temperature: The operating temperature ranges from -25 C to 60 C.

4. Protective Features: The contactor relay comes with overload, overvoltage, and short-circuit protection.

1. Reliability: Siemens is a trusted brand known for its high-quality products, and the 3RT2018-2FB42 contactor relay is no exception. It offers reliable performance even in harsh industrial environments.

2. Versatility: The contactor relay can be used in various applications due to its wide voltage range and protective features.

3. Easy Installation: The contactor relay is easy to install and requires minimal wiring.

1. Cost: The Siemens 3RT2018-2FB42 contactor relay is more expensive than some other brands and models.

2. Size: The contactor relay is larger than some other models, which may require additional mounting space.

The Siemens 3RT2018-2FB42 contactor relay is a reliable and versatile choice for industrial automation applications. Its protective features, wide voltage range, and easy installation make it an excellent option for those who require high-quality components. However, its higher cost and larger size may be a disadvantage for some buyers. Ultimately, the decision to purchase the Siemens 3RT2018-2FB42 contactor relay depends on your specific application requirements, budget, and space constraints.

If you require a high-quality contactor relay with reliable performance and protective features, the Siemens 3RT2018-2FB42 contactor relay is an excellent choice. However, if cost and size are a concern, you may want to consider other options from less expensive brands or models with similar specifications. It is recommended to consult with a qualified automation professional to determine the best solution for your specific application.

Details:

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specifications genpurrelays:

• brand: Siemens
• mpn: 3rt2018-2fb42
• part type: Contactor

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• class: standard
• carrier: usps, ups
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• sold #: 14
• prices: $52.00–$141.93
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• in stock #: 5
• started: march 8, 2026
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general genpurrelays:

• category: Business & Industrial > Electrical Equipment Supplies > General Purpose Relays