3RU2126-4NB0 SIEMENS Overload Relay

Review SIEMENS Overload Relay

The Siemens 3RU2126-4NB0 Overload Relay is a versatile and reliable electrical component designed for protecting motors and other electrical loads from overcurrent conditions. This overload relay from Siemens is part of their REL series and is suitable for use in various industries, including manufacturing, water treatment, and HVAC.

The 3RU2126-4NB0 Overload Relay is a three-phase, 2-pole, 4-position, and 6-way device. It offers two overload trips, each with three current settings, providing a total of six different overload protection levels. This allows for customized protection based on the specific application and electrical load requirements.

The Siemens overload relay features a robust design, with a metallic enclosure that ensures protection against harsh environments. It has a compact design, with a height of only 3 units, making it an excellent choice for space-constrained installations.

The 3RU2126-4NB0 Overload Relay is equipped with a thermal magnetic tripping element, which provides reliable and accurate overload protection. It also includes a time-delay function, which can be set to delay the tripping of the relay for a specified period after the overload condition has been detected. This function helps prevent nuisance trips and allows the motor or electrical load to recover before the relay is tripped.

The overload relay is easy to install and connect, with clear markings on the terminals and a simple wiring diagram provided in the documentation. It is also compatible with various control and monitoring systems, allowing for remote monitoring and control of the overload protection function.

The Siemens 3RU2126-4NB0 Overload Relay is designed to provide long-lasting and reliable operation, with a high load capacity and a low failure rate. It is also compliant with various international safety standards, including UL, CSA, and CE, ensuring safety and compliance in various applications.

In summary, the Siemens 3RU2126-4NB0 Overload Relay is a versatile and reliable electrical component that offers customizable overload protection for various electrical loads. Its robust design, ease of installation, and compatibility with various control systems make it an excellent choice for applications in various industries.

The Siemens 3RU2126-4NB0 is an overload relay that is designed to protect electrical circuits from overcurrent conditions. Here are some pros and cons of buying this specific model:

1. High Protection Rating: This overload relay has a high short-circuit breaking capacity and can handle currents up to 100A.

2. Versatile Application: It can be used in various industries such as manufacturing, power generation, and building automation.

3. Compact Design: With a width of only 3RU, it can save valuable space in electrical panels.

4. Easy Installation: The terminal blocks are color-coded, making it easy to identify and connect wires.

5. Robust Construction: It is built with high-quality materials that ensure reliable operation even in harsh environments.

1. Limited Input Voltage Range: It is designed for a voltage range of 220-240V only, which may limit its use in certain applications.

2. Higher Cost: Compared to other overload relays in the market, this Siemens model may have a higher price tag.

3. Limited Configurability: It may not offer advanced features like remote monitoring or communication capabilities.

The Siemens 3RU2126-4NB0 overload relay is a reliable and compact solution for protecting electrical circuits from overcurrent conditions. Its high short-circuit breaking capacity and wide range of applications make it a popular choice in various industries. However, its limited input voltage range and higher cost may be a drawback for some users. Ultimately, the decision to buy this model depends on the specific requirements of your application and your budget.

If you are looking for a reliable and compact overload relay with high short-circuit breaking capacity, then the Siemens 3RU2126-4NB0 is a good option. However, if you require a wider input voltage range or advanced features like remote monitoring or communication capabilities, you may want to consider other models in the market that may better suit your needs.

Details:

Siemens overload relay, part # 3RU2126-4NB0, condition: new, unused without package - removed from maintenance cabinet, 2-day and next day delivery is available.

specifications genpurrelays:

• brand: Siemens
• mpn: 3ru2126-4nb0
• country of origin: Germany

returns genpurrelays:

• paid by: seller
• method: money back
• time: 30 days
• policy: returns accepted

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general genpurrelays:

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

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• city: east jordan, michigan
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offer genpurrelays:

• in stock #: 5
• prices: $22.49–$88.00
• item condition:
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  • New
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• sold #: 12
• started: may 18, 2026
• availability: in stock
• options: ship-to-home