3RH1140-2AP00 Siemens SIEMENS Contact Relay AC230V 50/60HZ

3RH1140-2AP00 Siemens SIEMENS Contact Relay AC230V 50/60HZ

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Description :

Contactor relay, 4 NO 230 V AC 50 / 60 Hz Spring-type terminal Size S00  Successor is SIRIUS

3RH2 Preferred successor type is >>3RH2140-2AP00<<.

Similar Product:3RH1140-1AP00Description :

Contactor relay, 4 NO 230 V AC 50 / 60 Hz Screw terminal size S00 Successor is SIRIUS 3RH2

Preferred successor type is >>3RH2140-1AP00<<.

3RH1140-2AP00                                           3RH1140-1AP00

Contactor relay is a very important component in modern electrical control system. It converts the

control electrical signal into mechanical motion through the electromagnetic mechanism, and then

realizes the control and protection of electrical equipment by closing/disconnecting the contact.

It usually includes two parts: the main circuit and the control circuit, which are mainly composed of

a fixed part, a moving part and a contact frame. The main role of contactor relay has the following

aspects:

1. Electrical interlock: contactor relay can interlock all kinds of electrical signals in the circuit, so that

the equipment can operate automatically according to certain rules.

2. High power control: contactor relay has the ability to break large capacity current and voltage,

which is suitable for high-power load control such as motor control, lighting, heater and transformer.

3. Control signal expansion: Through the output signal expansion of contactor relay, various actuators

can be controlled, such as electromagnets, solenoid valves, etc., so as to achieve a wider range of control.

4. Overload and short circuit protection: the contactor relay can be used as the overload and short

circuit protection device of the equipment. When the equipment is overloaded, the relay will

automatically break the circuit to protect the safe operation of the equipment.

5. Circuit switching: contactor relay can be used for power switching and multi-switch control, such as

standby power switching.

In short, contactor relays have a very wide range of applications in modern electrical control systems,

the main role is to control and protect electrical equipment, to achieve automatic control, interlocking,

high-power load and other functions. At the same time, the contactor relay can also be used as a

control element for circuit switching and electrical signal expansion.

It has the following advantages:

1. High reliability: contactor relay adopts mechanical contact mode, and the spark generated by the

sound between friction and large current can be removed, thus making its operation very stable and

reliable. At the same time, the contactor structure is simple, easy to maintain and troubleshooting.

2. Large load capacity: contactor relay can be broken and withstand a certain current, voltage and other large loads, in the electrical control system can be widely used in AC, DC drive devices and a variety of switching lights, control solenoid valves and other high-load electrical control.

3. Anti-electromagnetic interference, with good durability: contactor relay adopts electromagnetic control mode, good isolation between signals, not easily affected by electromagnetic interference and power fluctuations, carrying capacity and long service life.

4. Simple installation and maintenance: contactor relay wiring is simple, easy to operate, can be directly fixed on the track or panel to use, do not need additional supporting installation equipment. At the same time, it has the advantages of simple structure, easy maintenance and convenient troubleshooting.

5. Suitable cost: contactor relays are affordable and cost-effective in various applications. Therefore, it is suitable for various small and medium-sized applications of electrical control systems.