51140 MURR Relay

Review MURR Rmmd-2a/24vdc Input Relay

The MURR 51140 RMMD-2A is a 24VDC coil operated, normally open (NO) relay manufactured by Murr Elektronik. This versatile component is designed to switch high currents or voltages via a low-voltage control signal.

The compact size of the RMMD-2A measures 52mm x 30mm x 18mm (L x W x H), making it suitable for space-constrained applications. It comes with 24 NO contacts, allowing it to switch multiple circuits simultaneously. This makes it an excellent choice for various control systems, automation projects, or industrial applications.

Each contact can handle up to 10A of current, with a maximum voltage of 250VAC or 600VDC. The relay has a contact resistance of 25 milliohms maximum, ensuring efficient switching and minimal power loss. The operating temperature range of the RMMD-2A is between -25 C and 70 C.

The relay's coil has a resistance of 135 ohms and a power consumption of 0.22W at 24VDC. It is designed to operate with a control voltage of 24VDC 10%, and it is capable of switching at a frequency of up to 25 times per second.

The RMMD-2A is built with a robust construction, featuring a high-quality silver-plated contact material and a protective epoxy resin coating. This ensures reliable operation, even in demanding environments. Additionally, it comes with an integrated flyback diode, which protects the coil from voltage spikes when the contacts open.

Installation of the RMMD-2A is straightforward. It comes with screw terminals for easy wiring and a convenient mounting plate for secure attachment to a DIN rail or other mounting surfaces. The relay also features a status LED, which illuminates when the contacts are closed, providing visual confirmation of the relay's operation.

Overall, the MURR 51140 RMMD-2A is a high-performance, versatile relay that offers excellent value for a wide range of applications. Its compact size, impressive contact ratings, and robust construction make it a popular choice for control systems, automation projects, and industrial applications.

1. Reliable: Murr Elektronik is known for producing high-quality electrical components, and this relay is no exception. It is designed to handle heavy current loads and can switch on and off reliably.

2. Versatile: The 2-form-A design of this relay allows for two separate circuits to be controlled by a single switch or signal. This can be useful in various applications where multiple circuits need to be turned on or off together.

3. Durable: Murr Elektronik uses high-quality materials in the construction of their relays, ensuring that they can withstand harsh environments and heavy usage.

1. Price: Compared to some other relays in the market, the Murr 51140 RMMD-2A/24VDC relay may be more expensive. This could be a drawback for those working on a tight budget.

2. Size: This relay is larger than some other options in the market, which could be a disadvantage for those with limited space in their electrical control panels.

3. Installation: Installing the relay may require some electrical knowledge, as it involves wiring up the coil and the load circuits.

The Murr 51140 RMMD-2A/24VDC relay is a reliable, versatile, and durable option for those in need of a heavy-duty relay. However, it may be more expensive and larger than some other options in the market. Ultimately, the decision to buy this relay depends on the specific requirements of your application and your budget.

If you require a heavy-duty relay with multiple switching capabilities, the Murr 51140 RMMD-2A/24VDC relay is a solid choice. However, if cost or size is a concern, you may want to consider other options in the market. It's always a good idea to compare different relays based on your specific needs and requirements to ensure that you make the best purchase for your application.

Details:

specifications genpurrelays:

• brand: Murr
• mpn: 51140

offer genpurrelays:

• availability: in stock
• options: ship-to-home
• prices: $59.20–$158.22
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• started: june 17, 2025
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• category: Business & Industrial > Electrical Equipment Supplies > General Purpose Relays