ABB can provide a wide range of 3-pole contactors suitable for simple and extremely harsh environments, as well as special contactor products. Among them, the AF contactor uses innovative technology, which subverts the traditional method of contactor use, and is suitable for various localities and various grid conditions worldwide. The miniature contactor series has a compact form factor and special connection methods. AS series contactors are cost-effective and can help you optimize your equipment design. For the terminal type, you can choose between screw, spring or ring lugs. In short, no matter what type of contactor you need, ABB can meet your needs.
The following is the product model and its introduction：
CR-MX230AC4L, CR-M024DC4L, CR-M024DC2L, CR-MX230AC2L, CR-MX230AC4L, CR-M2SFBN, CR-U024DC3L, CR-S024VDC1R, CR-S024VADC1CRS,
CM-PFE
CM-PFS.S, CM-PVS.41S
TA25DU-0.63M, TA25DU-3.1M, TA25DU-4.0M, TA25DU-5.0M, TA25DU-6.5M, TA25DU-8.5M, TA25DU-11M, TA25DU-14M, TA25DU-19M, TA25DU-25M, TA25DU-32M, TA42DU-25M, TA42DU-32M, TA42DU-42M, TA72DU-52M, TA450DU-185M, TA450DU-235M, TA450DU-310M
Brand: ABB
Name: Electronic Measurement and Monitoring Relay-CM Series cm-pvs.41s
Model: CM-PVS.41S
Parameter: CM-PVS.41S three-phase all-round monitor 50Hz
Monitoring range: 3 x 300-500V AC, 50 / 60Hz;
Product Code: 1svr730794r3300
Catalog description: cm-pvs.41s phase sequence monitoring function optional 3x300-500V AC, 50 / 60Hz 1x2c / o0, 0.1-30s1010231
The cm-pvs.41s relay is a CM three-phase monitoring range. The relay works at rated control supply voltage, three-phase measurement of 300-500 V AC voltage and cm-pvs. 41s monitor phase parameter overvoltage / undervoltage with a 2 C / O output contact rated at 250 V / 4 A , Phase failure. The corresponding threshold is adjustable. Phase sequence monitoring, and one or off trip delay are optional. Tripping delay adjustable range instantaneous 30 S (0, full). A sealable transparent cover is available as an accessory to prevent unauthorized changes. The device provides double cavity cage connection terminal screw connection technology.
1. Thermal overload relay
For motor overload and phase loss protection
Thermal overload relay is a more economical main circuit protection device, which can provide reliable protection in the event of overload and missing items. Thermal overload relays can be combined with contactors to form a compact starting solution.
Customer benefits
Reliable motor protection
Easy to set up the starting circuit
Match ABB contactor
Provides separate installation kit and remote control wire reset function to meet special application needs
Main features:
Trip level 10
Adjustable current range
Overload protection with phase loss detection
Temperature compensation up to + 60 ° C
Automatic or manual reset
Stop and test functions
2. Electronic overload relay
For motor overload and phase loss protection
Electronic overload relay provides reliable and accurate protection for motor overload or phase loss. Electronic overload relays can be combined with contactors to form a compact starting solution.
Customer benefits:
Reliable motor protection
Easy to set up the startup circuit
Works perfectly with ABB contactors
Three adjustable trip levels for the same product, reducing spare parts costs and improving design
Provides separate installation kit and remote control reset function to meet special application needs
Key Features:
Optional trip levels (10E, 20E, 30E)
Adjustable current setting range
Overload protection with phase loss detection
Temperature compensation up to + 70 ° C
Automatic or manual reset
Stop and test functions
ABB safety relays have the following features:
General purpose safety relay to connect most commonly used safety components on the market
5 LED status indicators directly indicate the faulty channel
Multiple signal outputs
Removable terminal block
Response time 20ms
Monitorable reset
Delayed output
Maximum input cable length (2KM)
Maximum switching capacity (10A)
Certified by International Standards Organizations such as Europe, USA, Canada and China
ABB thermal overload relay TA25DU-0.63M 0.4-0.63A thermal protection relay spot
ABB Switch Low Voltage Electrical is a Fortune 500 company. ABB's main products include CLMD capacitors, A / AX contactors SH200 / S200 miniature circuit breakers S200MDC DC air switches T molded case switches, E frame circuit breakers DC DC air switches MS motor starters TA Low-voltage products such as thermal overload relays ACS inverters and PST / PSS / PSE soft-start products, as well as high-voltage cabinets, low-voltage cabinets, transformers and other series products that ABB enjoys world-class advanced technology and patents.
Product description:
Scope of application:
Thermal overload relays and electronic overload relays are mainly used to connect with AX series contactors to protect motors with a rated operating voltage of AC 690V or DC 800V.
Product Range:
Standard relay
Model: TA25DU-M, TA42DU-M, TA45DU-M, TA75DU-M, TA85DU-M, TA80DU, TA110DU, TA200DU- TA25-TA200 Thermal overload relays are directly connected to the main circuit of the motor, allowing the rated current of the motor to pass.
-E16DU-E1250DU electronic overload relay
Adopt advanced electronic technology, adjustable trip level and higher protection accuracy.
Features:
-The thermal overload relay has a setting current setting level, which conforms to international and domestic standards. The setting current is the rated motor current, not the tripping current (no tripping at 1.05 x I setting current, tripping at 1.2 x l setting current).
-The tripping current level of the electronic overload relay can be selected from 10, 20, and 30. The protection accuracy is higher than the ordinary thermal overload relay (± 10%), and it has a wider current setting range.
-When the free trip mechanism fails, the trip state cannot be changed even if the reset button is pressed
-Ambient temperature compensation
-Phase loss protection according to IEC 60947-4-1:
It can shorten the action time of the relay in the event of a phase loss, thus improving the motor protection function in the setting range:
-Trip type: 10A: TA ... DU
-Reset test function
Auxiliary contacts:
With 2 auxiliary contacts
One normally closed contact, marked 95-96
One normally open contact, marked 97-98
2 contacts are electrically isolated, making them suitable for use in 2 different lines (control loop and signalling loop)
Safety Relays
RT series general-purpose relays have the main general functions used in safety applications. These safety relays can monitor both your safety devices and the internal safety of your equipment. In addition, you can also choose the security level according to the requirements of each installation occasion.
BT series safety relays are used to connect safety devices (such as emergency stop switches) and directly connect the power supply circuit to the relay. Although the maximum width is only 22.5mm, its function is very powerful. This type of relay can also be used as an expansion relay for Pluto to increase the number of outputs.
The JSB series includes a variety of dedicated safety relays, such as a two-handed controller with dual channel synchronization
Customer benefits:
General-purpose safety relays are suitable for all kinds of safety equipment, which helps customers reduce inventory
Equipped with removable terminal blocks for quick replacement
With information output function, easy troubleshooting
Safety level up to PL e / Cat 4, SIL3
LED indicator on the front panel to help you quickly diagnose faults
The thermal relay generates heat by the current flowing into the thermal element, causing the bimetals with different expansion coefficients to deform. When the deformation reaches a certain distance, it pushes the connecting rod to actuate, and the control circuit is disconnected, thereby causing the contactor to lose power. The main circuit is disconnected to achieve overload protection of the motor. As an overload protection element for electric motors, relays are widely used in production due to their small size, simple structure, and low cost.
Main technical parameters of thermal relay:
Rated voltage: The voltage value at which the thermal relay can work normally, generally AC 220V, 380V, 600V.
Rated current: The rated current of the thermal relay mainly refers to the current through the thermal relay
Rated frequency: Generally speaking, its rated frequency is designed according to 45 ~ 62HZ.
Setting current range: The setting current range is determined by its own characteristics. It describes that under certain current conditions, the operating time of the thermal relay is proportional to the square of the current.
Sl. No Equipment Name Specification Model Manufacturer Qty
7 Relay Three-phase monitoring relay 2c/o, 0.1-10s, L1-L2-L3=3x300-500VAC CM-PAS ABB 1
8 Relay Voltage monitoring relay 2c/o, B-C=3-600VRMS, 24-240VAC/DC CM-ESS ABB 1
10 Motor Starter 400 Volt, 1-6-2.5 A MS 325 ABB 1
CIRCUIT SHIELD, OVER CURRENT RELAY
MARCA ABB
TYPE 51D
CAT. 443S6140
S/N 1VACDL1411004026
The role of the thermal relay is:
It is mainly used to protect the asynchronous motor from overload. His working principle is that after the overload current passes through the thermal element, the bimetal is heated and bent to push the action mechanism to drive the contact action, so that the motor control circuit is disconnected to realize the motor power off heat The relay stops to play the role of overload protection. In view of the fact that heat transfer takes a long time during the bending process of the bimetal, the thermal relay cannot be used as short circuit protection, but can only be used as overload protection. The symbol of the thermal relay is FR, circuit symbol.
Method of choosing:
Thermal relay is mainly used to protect the motor from overload. Therefore, it is necessary to understand the condition of the motor when selecting it, such as the working environment, starting current, load nature, working system, and allowable overload capacity.
1. In principle, the thermal relay's amp characteristics should be as close as possible or even overlap the motor's overload characteristics, or under the motor's overload characteristics, and at the same time when the motor is overloaded and started for a short time, the thermal relay should not be affected (not action).
2. When the thermal relay is used to protect the motor for long-term or intermittent long-term operation, it is generally selected according to the rated current of the motor. For example, the setting value of the thermal relay may be equal to 0.95 ~ 1.05 times the rated current of the motor, or the median value of the setting value of the thermal relay is equal to the rated current of the motor, and then adjusted.
3. When the thermal relay is used to protect the motor of repeated short-time working system, the thermal relay has only a certain range of adaptability. If there are many operations in a short time, it is necessary to choose a thermal relay with a speed saturation current transformer.
4. For special working system motors with frequent forward, reverse, and frequent switching, it is not appropriate to use thermal relays as overload protection devices, but to use temperature relays or thermistors embedded in the motor windings to protect them.
Composition structure:
It consists of a heating element, a bimetal, contacts and a set of transmission and adjustment mechanisms. The heating element is a piece of resistance wire with a small resistance value, which is connected in series in the main circuit of the protected motor. Bimetals are formed by rolling two metal sheets with different thermal expansion coefficients. The bimetallic piece shown in the figure has a large thermal expansion coefficient in the lower layer and a small in the upper layer. When the motor is overloaded, the current passing through the heating element exceeds the set current, and the bimetal strip is bent upward from the buckle plate when heated, so that the normally closed contact is opened. Since the normally closed contact is connected to the control circuit of the motor, its disconnection will cause the contactor coil connected to it to be de-energized, so that the main contact of the contactor is disconnected, and the main circuit of the motor is de-energized, thereby achieving overload. protection.
After the thermal relay is activated, the bimetallic piece cools down after a period of time and can be reset by pressing the reset button.
Working principle:
Thermal relays are protective appliances for overload protection of motors or other electrical equipment and electrical circuits.
In the actual operation of the motor, such as dragging the production machinery to work, if the machine is abnormal or the circuit is abnormal and the motor encounters an overload, the motor speed will decrease, the current in the winding will increase, and the winding temperature of the motor will increase. Rise. If the overload current is not large and the overload time is short, the motor winding does not exceed the allowable temperature rise, this overload is allowed. However, if the overload time is long and the overload current is large, the temperature rise of the motor windings will exceed the allowable value, aging the motor windings, shortening the service life of the motor, and even causing the motor windings to burn out in severe cases. Therefore, such an overload cannot be sustained by the motor. The thermal relay is a protection electrical appliance that uses the thermal effect principle of the current to cut off the motor circuit when the motor cannot withstand an overload, and provides overload protection for the motor.
