JRS2 series of thermal relay electrical contactors and relays electronic overload relay

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Ningbo
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TT OR LC
Min Order Qty:
100 pc
Supply Capability:
5000 pc/month

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Product Description:

  JRS2-80/Z Thermal Relay

Product Description:

Product Details

Brand Name

Shaman

Item No.

JRS2-80/Z

Color

Black

MOQ

100 pcs

Packing

30 pcs in one carton based on the items of products.

Important Information

Send sample

Yes

Delivery time

Within 30 days.

Payment terms

T/T 30% deposit, the balance before the shipment.

Introduction:

  • JRS2 thermal relay is suitable for AC 50/60Hz, voltage up to 660V and current up to 630A,general AC motor of long  or discontinuous long operation, used as overload protection and has the functions of breaking phase protection,  temperature compensation, and trip indication.

  • It can automatically and manually get back. It can be fixed with contactor CJX1 together, also be independently fixed.

  • The product conforms to IEC60947-4-1 standard.

Motion Characteristic:

(Three-phase Balance Motion Time)


NoTimes of the   setting currentMotion   timeStart conditionAmbient   temperature
11.05>2hCold   state20±5℃
21.2<2h< span="">Heat   state(Following the No.1 test)
31.5<4min< span="">
47.210A2s<   Tp≤10s≤63ACold   state
104s<   Tp≤10s>63A


Phase-losing Motion Characteristic:

NoTimes   of the setting currentMotion timeStart conditionAmbienttemperature
Any two phasesAnother   phase
110.9>2hCold   state20±5℃
21.150<2h< span="">Heat   state(Following the No.1 test)

Specification:

JRS2 series of thermal relay electrical contactors and relays electronic overload relay

JRS2 series of thermal relay electrical contactors and relays electronic overload relay

Outline and Mounting Dimension:

JRS2 series of thermal relay electrical contactors and relays electronic overload relay

Accessories:

JRS2 series of thermal relay electrical contactors and relays electronic overload relay

Detailed Images:

JRS2 series of thermal relay electrical contactors and relays electronic overload relay

JRS2 series of thermal relay electrical contactors and relays electronic overload relay

Packaging & Shipping:

JRS2 series of thermal relay electrical contactors and relays electronic overload relay

JRS2 series of thermal relay electrical contactors and relays electronic overload relay

The wearhouse:

JRS2 series of thermal relay electrical contactors and relays electronic overload relay

The certificate:

JRS2 series of thermal relay electrical contactors and relays electronic overload relay

The exhibition:

Why Chose us:

  • We have our own engineer teams,will supply the professioanl design for you.

  • Every new product can be made accurate by your design and demand.

  • Enough stock to fit your urgently need.

  • Keep smooth delivery on time.

  • Perfect package according to your demand.

Our service:

  • 7day*24hours Hot-line & Email Service.

  • Your inquiry related to our products or prices will be replied in 24hours.

  • Well-trained and experienced staffs to answer all your questions in fluent English.

  • OEM&ODM is available.




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Q:Will AC relays be replaced with DC relays?
Can not, the nature of the charge is not the same, AC only DC can only share the incandescent bulbs
Q:What is the internal relay?
Q:Electromagnetic relay selection
Characteristic parameters: The main characteristics of the electromagnetic relay parameters are the following: 1. Rated operating voltage or rated current: This refers to the relay work coil voltage or current required. The construction of a type of relay is generally the same. In order to adapt to different voltage circuit applications, a type of relay usually has a variety of rated operating voltage or rated operating current, and with the specification model to be distinguished. 2. DC resistance: This refers to the DC resistance of the coil. Some product specifications are given rated operating voltage and DC resistance, then according to Ohm law to find the rated operating current. If the rated operating current and DC resistance are known, the rated operating voltage can also be obtained. 3. Pull-in current: it refers to the relay can produce the minimum action of the suction action. In actual use, to make the relay reliable pull, the given voltage can be equal to or slightly higher than the rated operating voltage. Generally not more than 1.5 times the rated operating voltage. Otherwise it will burn the coil. 4. Release current: it refers to the maximum current that the relay produces the release action. If the current of the relay in the pull-up state is reduced, when the current is reduced to a certain extent, the relay returns to the state when it is not energized. This process is called the release operation of the relay. The release current is much smaller than the pull-in current.
Q:Why can not thermal relays be used for short circuit protection?
By the thermal relay structure and working principle we can see that it is the use of the thermal effect of the current work. When the current flowing through the heat generating element connected to the main circuit exceeds the allowable value and after a certain period of time (thermal inertia), the bimetal sheet having different linear expansion coefficients is thermally deformed to deflect the buckle so that its normally closed contact In series with the control circuit), the contactor coil is de-energized, and the motor main circuit is disconnected to achieve overload protection. As the thermal relay has a thermal inertia, the motor starts or short time overload, it will not move, you can avoid unnecessary motor parking. When the motor short-circuit fault occurs, the short-circuit current in a very short period of time to achieve a large number of requirements, quickly cut off the power to protect the motor. But the heat accumulation of the thermal element in such a short period of time is not sufficient to deform the bimetallic sheet to drive the contact action. So the thermal relay can not meet the circuit when a short circuit failure instantaneous power requirements immediately, and therefore can not be used for short circuit protection. The working principle of the thermal relay is caused by the heat flowing into the heat element, so that the bimetal with different expansion coefficient is deformed. When the deformation reaches a certain distance, the connecting rod is pushed to make the control circuit open, so that the contactor Power failure, the main circuit off, to achieve the motor overload protection. Relay as the motor overload protection components, with its small size, simple structure, low cost advantages in the production has been widely used.
Q:Ask you, the insulation class is the insulation grade F
heir allowable operating temperatures are: 90,105,120,130,155,180 and 180 ℃ above.
Q:Interlocking principle between relays? who knows
The above answer is too much trouble, simply put the two relay normally closed contact in series with each other in the coil circuit, to ensure that only one relay at the same time work.
Q:The difference between the transistor output and the relay output
Although both are control devices, but the transistor input and output are not galvanically isolated, and the relay is electrically isolated, when the volume is limited, the response time is very short, are often used to control the transistor, and the voltage is relatively high , The current is relatively large, pay attention to personal safety, often with the relay ...
Q:How does the power off delay time relay reset automatically?
When you power off, he will automatically reset.
Q:Why is the heater with solid state relay better?
In many applications, it is necessary to switch power components very quickly (from a few watts to several kilowatts). A good example is the control of the heater components in the temperature control system. Through the wide pulse amplitude modulation to adjust the heating of the input system, periodically switch the fixed power of the heating element, from a few seconds to a few minutes. Mechanical relays have limited switching times because their components are broken after tens of thousands of times. SSR does not have these problems. If applied properly, you can run infinitely.
Q:What is the relay contact and dynamic contact
It is often said that normally open normally closed contact, the relay in the case of no power, a pair of contacts is closed is called normally closed, and vice versa is often open, moving is often open contact, moving off is often closed head

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