1781-OB5Q WRC Relay Module

Review WRC Relay Module 3amp

The WRC 1781-OB5Q Relay Module is a versatile and robust electrical component designed to handle up to 3 amps of current. This relay module is an optimal solution for various automation and control applications.

The WRC 1781-OB5Q is a single-pole double-throw (SPDT) relay, meaning it can switch an electrical circuit between two states. It comes in an OB5Q form factor, which is a popular size for relay modules. The OB5Q form factor measures 35mm in diameter and 17.5mm in height.

This relay module features a coil voltage range of 100VAC to 300VAC and a contact rating of 3A at 250VAC. It also comes with a built-in diode for flyback protection, ensuring safe operation even in inductive loads. The contacts are gold-plated to provide excellent conductivity and minimize contact resistance.

The WRC 1781-OB5Q has a compact and rugged design, making it suitable for use in industrial and automotive environments. It operates at a temperature range of -25 C to 70 C, ensuring reliable performance in a wide range of conditions.

The relay module has four terminals: NO (Normally Open), NC (Normally Closed), COM (Common), and IN (Input). The IN terminal is used to apply the control signal to the relay, while the NO and NC terminals are used to switch the circuit. The COM terminal is the common point for the circuit that is being switched.

The WRC 1781-OB5Q comes with a protective cover to safeguard the coil from external damage. It also has a clear plastic window, allowing users to visually monitor the status of the relay.

Overall, the WRC 1781-OB5Q Relay Module is a high-quality and reliable component for switching low to medium current electrical circuits. Its robust design, versatile features, and wide operating temperature range make it an excellent choice for various industrial and automotive applications.

The WRC 1781-OB5Q Relay Module is a 3-amp, mechanically operated switching device that can be used in various electrical applications. Here are some potential pros and cons of purchasing this relay module:

1. High Current Capacity: This relay module can handle a current of up to 3 amps, making it suitable for applications that require heavy electrical loads.

2. Versatile: It can be used in various electrical systems, such as HVAC, security systems, and industrial automation, among others.

3. Robust Design: The relay module is designed to withstand harsh environments and can operate in temperatures ranging from -20 C to 70 C.

4. Easy to Install: The module has a standard size and can be easily integrated into various electrical systems.

5. Safe: The module has overload protection, which helps prevent damage to the relay or the electrical system in case of overcurrent.

1. Mechanical Switching: The relay module uses mechanical switching, which may not be suitable for applications that require fast switching times or high reliability.

2. Limited Input Voltage: The module can only be used with input voltages between 8 and 40V DC.

3. No Opto-Isolated Output: The module does not have opto-isolated outputs, which may be required in some applications to prevent electrical interference between the control and load circuits.

4. Manual Reset: The module requires manual reset in case of overload or fault conditions, which may not be convenient in all applications.

The WRC 1781-OB5Q Relay Module is a robust and versatile switching device suitable for applications that require heavy electrical loads and can operate in harsh environments. However, it may not be the best choice for applications that require fast switching times, high reliability, opto-isolated outputs, or automatic reset.

If you require a relay module with fast switching times, high reliability, opto-isolated outputs, or automatic reset, you may want to consider other types of relay modules or solid-state relays. However, if you are looking for a reliable and cost-effective solution for applications that require heavy electrical loads and can tolerate the limitations of mechanical switching, the WRC 1781-OB5Q Relay Module may be a good choice.

Details:

New spare part at factory that closed 1 PC.

specifications genpurrelays:

• brand: Wrc
• mpn: 1781-ob5q
• current type: Dc
• type: Input/output Module
• number of pins: 12-pin
• current rating: 3a
• country/region of manufacture: United States

offer genpurrelays:

• prices: $45.00–$170.00
• item condition:
  • New – Open box
  • Open box
  • New
  • Used
• in stock #: 5
• started: september 26, 2025
• sold #: 16
• options: ship-to-home
• availability: in stock

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

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