
| Brand | CUTLER HAMMER |
|---|---|
| Manufacturer Part Number | D5PR21A |
The Cutler Hammer D5PR21A is a versatile and reliable AC contact relay designed for use in various electrical applications. This particular model is part of Cutler Hammer's industrial-grade D5 series, which is known for its robust construction and excellent performance.
The D5PR21A is a 2-form-A, 1-coil, 1-pole, 2-contact relay with a normally open (NO) contact configuration. It can handle a maximum contact current of 10 amperes at 125 volts AC, and can handle a maximum coil voltage of 125 volts AC. The contacts are rated for a contact rating of 10,000 cycles, ensuring long-lasting performance even in heavy-duty applications.
The relay is housed in a rugged, die-cast aluminum case that measures 2.4 inches by 1.7 inches by 1.2 inches. It has a compact design that allows for easy installation in tight spaces, and its terminal blocks are accessible from the front for convenience. The relay also features a removable terminal block that can accommodate larger wires, making it suitable for use in industrial environments where heavy-gauge wires are common.
The D5PR21A is designed for use in applications where electrical switching is required, such as in HVAC systems, industrial control panels, and motor starters. It is UL listed for use in industrial control equipment and applications, ensuring compliance with the highest safety standards.
The relay is easy to operate, with a clear coil indicator that shows when the relay is energized. It also features a built-in overload protection mechanism that helps prevent damage to the coil from short circuits or overloads.
In summary, the Cutler Hammer D5PR21A is a high-performance, industrial-grade AC contact relay that offers reliable and long-lasting performance in demanding applications. Its rugged construction, compact design, and easy-to-use features make it an ideal choice for a wide range of electrical switching applications.
The Cutler Hammer D5PR21A is a 20 Amp, 120/277V AC, single-pole, double-throw (SPDT) relay. Relays are electrical switches used to control electrical circuits remotely. Here are some potential pros and cons of buying this particular relay:
Pros:1. UL listed: The Cutler Hammer D5PR21A is UL listed, which means it has been tested and approved by Underwriters Laboratories for safety and performance.
2. Cost-effective: This relay is relatively affordable compared to some other options in the market.
3. Versatile: It can be used in various applications, including HVAC systems, lighting controls, and industrial automation.
4. Easy to install: The relay is designed to be easy to install, with clear markings and a compact size.
Cons:1. Manual operation: This relay does not have built-in overload protection or other advanced features, meaning it may require manual intervention for certain applications.
2. Not suitable for high-current applications: With a maximum current rating of 20 amps, this relay may not be suitable for applications that require higher currents.
3. Limited mounting options: The relay comes with a standard mounting pattern, which may not be compatible with all enclosure types.
In conclusion, the Cutler Hammer D5PR21A relay can be a cost-effective and reliable option for low-current, SPDT applications. However, it may not be suitable for high-current applications or those requiring advanced features. If you have a specific application in mind, it is always a good idea to consult the manufacturer's specifications and consider other options that may better fit your needs.
Recommendation:If you are looking for a cost-effective, UL-listed, single-pole, double-throw relay for low-current applications, the Cutler Hammer D5PR21A could be a good choice for you. However, if you require advanced features or higher current ratings, it may be worth considering other options in the market.
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