MR3B WESTINGHOUSE Relay Ac Blade

Review WESTINGHOUSE Relay 120 Ac Blade

The Westinghouse MR3B Relay is a versatile and reliable electrical switching device designed for use in various industrial and commercial applications. This 120V AC, blade-type relay is manufactured by Westinghouse Electric, a trusted name in the electrical industry known for its high-quality and durable electrical components.

The MR3B Relay comes with three normally open (NO) contacts and one common (C) contact. These contacts are rated at 10A, making it suitable for handling medium current loads. The contacts are silver-plated to ensure good conductivity and long contact life. The relay operates on AC power and is designed to handle voltages up to 120 volts.

The MR3B Relay is built with a rugged and durable construction, featuring a die-cast aluminum housing and a silicone rubber seal to provide protection against dust and moisture. The relay has an operating temperature range of -20 C to 70 C, making it suitable for use in a wide range of environments.

The MR3B Relay is easy to install and operate. It features a conveniently located coil terminal and contact terminals, making wiring simple and straightforward. The relay also comes with a built-in coil overload protection feature, which helps prevent damage to the coil from overcurrent conditions.

The Westinghouse MR3B Relay is an essential component for various applications, including motor control, power distribution, and industrial automation. Its reliability, durability, and ease of use make it a popular choice among electrical engineers and maintenance personnel. Whether you're looking for a replacement relay for an existing system or need to build a new one, the Westinghouse MR3B Relay is an excellent choice for your electrical switching needs.

The Westinghouse MR3B relay is a 120 AC blade type overload relay commonly used in electrical systems for overload protection. Here are some pros and cons of buying this specific relay:

1. Overload Protection: The primary function of the Westinghouse MR3B relay is to protect electrical circuits from overloading, which can prevent damage to the system and reduce the risk of electrical fires.

2. Versatile Application: This relay can be used in various applications, including heating systems, pumps, motors, and other electrical equipment.

3. Easy Installation: The relay has a blade-type design, which makes it easy to install and replace. It can be mounted directly on the terminal board without the need for additional wiring or connections.

4. Durable Construction: The Westinghouse MR3B relay is constructed with high-quality materials and has a robust design, ensuring long-term reliability and performance.

5. Adjustable Settings: The relay comes with adjustable settings, allowing users to customize the overload protection based on their specific application requirements.

1. Limited Capacity: The Westinghouse MR3B relay is designed for small to medium-sized electrical loads, and may not be suitable for large industrial applications.

2. Limited Operating Temperature Range: The relay has a limited operating temperature range, and may not perform optimally in extreme temperatures.

3. Expensive: Compared to other relays in the market, the Westinghouse MR3B relay can be relatively expensive.

4. Requires Regular Maintenance: Like all electrical components, the Westinghouse MR3B relay requires regular maintenance to ensure optimal performance and prevent potential issues.

The Westinghouse MR3B relay is a reliable and versatile overload protection solution for small to medium-sized electrical applications. Its easy installation, adjustable settings, and durable construction make it a popular choice among electrical professionals. However, its limited capacity, operating temperature range, and high cost may be drawbacks for some users.

If you are looking for a reliable and versatile overload protection solution for small to medium-sized electrical applications, the Westinghouse MR3B relay is a good option to consider. Its adjustable settings and durable construction make it a worthwhile investment for those who prioritize safety and performance in their electrical systems. However, if you require a more cost-effective solution or have larger electrical loads, you may want to explore other options in the market.

Details:

Vital information. Specifically, it is rated for ac current at 120 volts , with 11 blades easy installation and connection. As a product from the reputable brand Westinghouse, this relay is reliable and efficient for various industrial commercial applications requiring dependable control of electrical circuits. Most items ship same day.

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specifications genpurrelays:

• brand: Westinghouse
• mpn: Mr3b
• part type: Ac Blade
• current type: Ac
• coil voltage: 120

returns genpurrelays:

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

seller genpurrelays:

• rating: 100.0%
• # reviews: 6394
• city: exeter, new hampshire

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general genpurrelays:

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

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• in stock #: 5
• best offers: true
• sold #: 7
• prices: $15.00–$36.77
• item condition:
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• availability: in stock
• started: january 21, 2026
• options: ship-to-home

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