ATO Relays Wiring

A relay is an electronically generated switch. When the relay normally uses the electromagnet (coil), the internal mechanical shift operation. When the relay point is open, the power is turned on and the electromagnet is activated.

Relay main contacts are used to move circuits and circuits. A type of relay contains a transformer voltage trigger, this trigger voltage is when the relay coil is operating, usually in the circuit close to open and open to close. It is used to move electronic machines in electronic circuits.

Relays are used in various ways such as electronic circuit boards, machines, appliances, cars and the list goes on. The main function of the relay is to switch the circuit on and off at a given time, automating the circuit. A great advantage of relays is the ability to switch many different circuits of different voltage types at once by using the same relay. So how to wire a relay correctly? Let' s show you the sample wiring diagrams of relays.

Table of Contents

  1. How to Wire Solid State Relay?
  2. How to Wire Timer Relay?
  3. How to Wire Electromagnetic Relay?
  4. How to Wire Thermal Overload Relay?
  5. How to Wire Monitoring Relay?

How to Wire Solid State Relay?

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How to Wire Timer Relay?

Analog Timer Relay

Analog timer relay wiring diagram

The ATO analog time delay relay has output function of one group instantaneous and one group delay. This is 8-pin mounting socket, which can be installed at a 35mm standard DIN rail. Connect the power to 2 and 7. And then connect it to the power supply and wire the alarm light to the time delay terminals. This time delay relay has a timing range of 1 minute. Now set its timing to 10s. When the power is on, the timer relay starts timing.

Programmable Timer Relay

Wiring diagram of programmable timer relay

This is an ATO 16 channel programmable timer relay. Connect the wires according to the circuit diagram. Two relays are connected with Y0 and Y1. Connect the input switch SB1 to the input. Then you can long press SET to enter the setting interface.

How to Wire Electromagnetic Relay?

Electromagnetic relay wiring diagram

Electromagnetic relays use electromagnets to control the "on" or "off" state of the working circuit. When a voltage is applied at both ends of a coil, a current flows through the coil, creating electromagnetic effects. The electromagnet of electromagnetic relay will draw the armature to the core against the pull of the spring, thus pulling the moving contact of the armature to the fixed contact (normally open contact, or NO). When the power supply is cut off, the attraction of the electromagnet disappears, and the armature recovers its position under the pull of the spring, so that the moving contact (normally closed contact or NC) is separated from the moving contact. Pull out and release are used to control the opening and closing of the circuit. Normally open contacts and normally closed contacts respectively mean that the stationary contacts are in the "on" state when the coil is powered off, and the stationery contacts are in the "off" state when the coil is powered on.

How to Wire Thermal Overload Relay?

Thermal overload relay wiring diagram

Thermal overload relays are used to provide overload protection, open-phase protection and protection against unbalanced current for motors. And they can also avoid heating in electrical equipment. The thermal overload relay works by thermal effect of electric current to push the action mechanism to make or break contacts for protection of electrical appliances.

A thermal overload relay consists of a thermal element, action mechanism, bimetallic sheets, contacts, a reset button, etc. To use the thermal overload relay, you need to connect the heating element in series with the main circuit of the motor and let the NC contacts in tandem connection with the control circuit of the motor. When the motor is running normally, the heat produced by the thermal element will bend bimetallic sheets, but it’s not adequate to trigger the contacts of the relay. Once the motor is overloaded, the bending degree of the bimetallic sheets increases to push the guide plate to separate the NC contacts.

How to Wire Monitoring Relay?

3 phase voltage monitoring relay wiring diagram

The 3 phase monitoring relay can be mounted on 35mm DIN Rail. When the proper three phase line voltage is applied to the unit and the phase sequence is correct, the monitoring relay is energized after the restart delay is completed. The NC contact across terminals 1 & 2 opens, and the NO contact across terminals 1 & 8 open. Any one of five fault conditions will de-energize the relay after a delay and the contacts return to their normal state.