A relay is an electronic control device, which can automatically switch a controlled circuit to make a difference when given an input value like electrical, magnetic, optical or thermal signals. When the input value drops to a certain extent, it will return to the initial state and then the controlled circuit will also go back to the original state. It has the interaction between control system (input circuit) and the controlled system (the output circuit). Relays are usually used in automatic control circuits, as the automatic switches which actually can control a larger current by placing a smaller current. Therefore, it plays a role of automatic adjustment, safety protection, conversion circuit in the electric circuit. As one of the most important control elements, it is widely applied in remote control, telemetry, communication, automatic control, mechatronics and power electronics.
Low price 3 phase voltage monitoring relay with SPDT (1 C/O) contact, used for monitoring phase failure/loss, phase sequence, phase unbalance, overvoltage and undervoltage at the rated voltage of AC 220V, 380V, 440V, 460V, or 480V 50/60Hz, LED lights indicating working state, compact size and DIN rail mounting, provide a safe protection for electric motors, air compressors, pumps and other equipment or devices.
General purpose electromagnetic relay, 11 pins, 3PDT contact type, available for the common coil voltages of 12V DC, 24V DC, 110V AC and 220V AC, rated load 5A/240V AC 28V DC, compact size, favorable price and high quality.
Electromagnetic relay features with 8 pins, DPDT(Double Pole Double Throw), clear and plastic housing. The coil voltages of 12V DC, 24VDC, 110V AC and 220V AC are available with contact load 5A/240V AC 28V DC and widely used in automatic control system.
Low cost safety relay 24V DC/AC for sale, AC supply voltage 24V, 42V, 115V, 120V, 230V, or 240V, DC supply voltage 24V, frequency 50-60Hz. Safety relay with high-performance, safely control the environment around any time to monitor.
DC voltage monitoring relay with 2 C/O contacts (2 Form C or DPDT) provide protection for the equipment from undervoltage and overvoltage in DC circuit 12V, 24V, 36V or 48V, adjustable trip delay time, LED indicator for working state, DIN rail mounting, compact design, good quality and low price.
Safety relay is mainly used for AC 50-60Hz, supply voltage 24VAC/DC, safety contacts 3NO, auxiliary contact 1NC, AC power consumption 2.2VA, DC power consumption 2W. Extremely light, good value for money, direct sales from the manufacturer and free shipping.
Single phase voltage monitoring relay, suitable for undervoltage and overvoltage monitoring of DC 12V, AC/DC 24-48V or AC/DC 110V-240V, adjustable delay time, compact size relay with 1 CO & 1 NC contacts, real-time LCD for voltage, operation and fault status display, DIN rail mounting, high quality and low cost.
Phase voltage monitoring relay, used for phase loss, phase sequence, voltage unbalance, overvoltage and undervoltage monitoring with 3 phase power supplied by 208-480V AC 50/60Hz, also with timer & counter function, 0.1-30s adjustable delay time, compact size relay with 1 CO + 1 NC contacts, real-time LCD display for voltage, fault and operation state, DIN rail mounting. High accuracy and favorable price.
11-pin 3PDT Electromagnetic relay are available for 12V DC, 24V DC, 110V AC and 220V AC coil volatge, with rate load 10A/250V AC 28V DC. Transparent housing, small size, long service life and high reliablity.
Low price SSR-25DA, single phase solid state relay, DC control, 3-32V DC input voltage, 25A load current, 24-480V AC load voltage, quality and reliable, best for commercial and industrial applications.
Available for 12V/24V DC, 110V/220V AC coil voltage, electromagnetic relay features DPDT contact configuration, 8 pins with plug-in terminals, contact load 10A/240V AC 28V DC. Favorable price and high quality.
Low cost and high quality electromagnetic relay, 11-pin 3PDT, plug-in terminals, silver alloy contacts, and contact load 10A/240V AC 28V DC, common coil voltages of 12VDC / 24VDC / 110VAC / 220V AC for your choice.
Brand new solid state relay 40A, zero cross, control voltage 3-32V DC, load voltage 24-480V AC, LED indicator, panel mount, low cost and high quality, ideal SSR for automatic process control applications.