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GTH-12M Mini Motor Thermal Overload Relay , Overload Protection Relay

Categories Thermal Overload Relay
Brand Name: KRIPAL
Model Number: UKH-12M
Certification: CE
Place of Origin: China
MOQ: 500 pcs
Price: negotiable
Payment Terms: T/T, L/C
Supply Ability: 30000 pcs per month
Delivery Time: 20 days and depends on ordering quantity
Packaging Details: Each unit packed in a individual box
Pins: 3
Type: thermal overload
Protection: overload
Usage: Usually with ac contactor
Reset: manual / automatic
Auxiliary: 1NO+1NC
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GTH-12M Mini Motor Thermal Overload Relay , Overload Protection Relay


GTH-12M Mini Motor Thermal Overload Relay , Overload Protection Relay


Thermal overload relays are protective devices. They are designed to cut power if the motor draws too much

current for an extended period of time. To accomplish this, thermal overload relays contain a normally closed

(NC) relay. When excessive current flows through the motor circuit, the relay opens due to increased motor

temperature, relay temperature, or sensed overload current, depending on the relay type.


These overload relays are similar to circuit breakers in construction and use, but most circuit breakers differ

in that they interrupt the circuit if overload occurs even for an instant. Thermal overload relays are conversely

designed to measure a motor's heating profile; therefore, overload must occur for an extended period before

the circuit is interrupted.


Characteristics:


1. Be mounted with contactor UKC(D)1-6M/9M/12M directly


3. Small size: 44mm width


4. 1NO+1NC tripping contact


5. Class 10A tripping standard


6. Phase-failure protection type: UKK


7. Sstandard type: UKH


8. Applicable ambient temperature: -5 to 40 degree


9. Manual/automatic reset


10 Ewmote reset is optional


11. Design of free trip


Specifications:


Motion Characteristic: Three-phase Balance Motion Time


No

Times of the setting current

Motion time

Start condition

Ambient temperature

1

1.05

>2h

Cold state

20±5oC

2

1.2

<2h

Heat state(Following the No.1 test)

3

1.5

<4min

4

7.2

10A

2s< Tp≤10s

≤63A

Cold state

10

4s< Tp≤10s

>63A


Phase-losing Motion Characteristic


No

Times of the setting current

Motion time

Start condition

Ambient temperature

Any two phases

Another phase

1

1.0

0.9

>2h

Cold state

20±5oC

2

1.15

0

<2h

Heat state(Following the No.1 test)


Applications:


UKH series thermal overload relay can be used in the circuit of 50Hz or 60Hz, rated insulation voltage 660V,

rated current 0.1-93A for protecting the phase break when the electric motor is overload. The relay has different mechanism and temperature compensation& can be plunged in UKC1 series AC contactor.


Current Range:


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