Miniature relay RM50N-3021-85-1005 electromagnetic for printed circuit board (sugar cube relays), height 15.3 mm 2614655

Miniature relay for printed circuit boards – a reliable automation component

The electromagnetic relay RM50N-3021-85-1005 is a compact device designed for mounting on printed circuit boards (PCBs). Its construction, often referred to as a "sugar cube", allows for efficient use of space in applications where minimizing size is important. It is an ideal solution for projects requiring reliable switching of circuits with relatively low power consumption.

Construction and application

This relay is characterized by a single normally closed contact (1Z), which means that in the rest state the circuit is closed and current flows through it. When the coil is activated, the contact breaks, interrupting the circuit. It finds application in a wide range of devices and systems, such as:

• Building automation (lighting, heating control)
• Household appliances (controlling the operation of motors, heaters)
• Security and alarm systems
• Consumer electronics (e.g. power control)
• Prototyping and small-series production of electronic devices

Parameters and characteristic features

The RM50N-3021-85-1005 relay is designed to operate with a coil voltage of 5 V DC. Its contacts can withstand a current of up to 12 A at 125 V AC and 12 A at 28 V DC. The dimensions of the device are 19.5 x 15.6 x 15.3 mm, and the IP64 protection class provides resistance to dust and moisture. The contact material - AgSnO2 - guarantees good electrical conductivity and wear resistance. The coil with a resistance of 70Ω draws a power of 360mW. Mounting is done directly on the printed circuit board thanks to the lead-out pins. Fast operating (10 ms) and release (5 ms) times enable precise circuit control.

Additionally, it is worth mentioning the wide operating temperature range from -30°C to +55°C, which makes it a universal solution for various operating environments. The use of AgSnO2 material on the contacts translates into their longer life and reliability in long-term operation. The relay design provides high resistance to electromagnetic interference, which is particularly important in industrial applications and automation.