AR1 Series Overload Protector

AR1 Series Overload Protector

AR1 Series Overload Protector

Explore the AR1 Series Overload Protector, designed for reliable motor overload protection in industrial electrical applications.
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Product Features

Rated Current: 3A–50A 

Rated Voltage: 125/250V AC, 50V DC 

Short-Circuit Test: 250V AC, 1000A  , 250*200A

Dielectric Withstand Voltage: 1500V AC for 1 minute 

Overload Capacity: 10 times rated current 

Voltage Drop: Less than 0.25V 

Insulation Resistance: Greater than 500 MΩ 

Terminal Temperature Rise: <65 K at 100% rated current, stabilized at 25 °C 

Reset Time: Resets within 60 seconds 

Reset Mode: Manual reset 


Test Standards (Constant Temperature 25 °C) 

    100% Current Test: No trip 

    150% Current Test: Trips within 1 hour 

    200% Current Test: 4–40 seconds to trip 

    300% Current Test: 1.2–15 seconds to trip


Technical Specifications

Derating Factor

Temperature

(℃

Correction Current
60*0.5
50*0.6
40*0.72
30*0.85
25*1.0
20*1.1
10*1.25



Maximum Resistance and Rated Current at 25℃


Rated CurrentMaximum Resistance Value
3~4A0.12
5~6A0.075
7~8A0.05
9~11A0.025
12~13A0.015
14~16A0.01
17~20A0.008
21~25A0.007
26~30A0.006
31~40A0.005



Dimensional Drawing

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