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Home ProductMotor Protector Relay
General Introduction
The Underload Grounding Temperature Protection Relay mainly serves as overload, out-of-phase, phase imbalance and stall protection. It has a rated control voltage of AC220V and can set the current range with a current measurement accuracy of ≤0.2%. It has a built-in microprocessor and is installed in a cabinet or 1/4 drawer unit.
Our Underload Grounding Temperature Protection Relays are often used in motor control applications such as switchgear, air conditioning units, elevator machine rooms, pumps, fans, etc. Please select the appropriate model according to the model selection table. 300 units are available for OEM and ODM service.
Features
Our Underload Grounding Temperature Protection Relays are very popular for their wide range of use and protection functions. It is push-button set and the LCD display can show the current fault status. It is also adjustable for overload and has 1 set of switching and 1 set of auxiliary non-contact. Our relays are not only suitable for AC power systems, but also for DC power systems. Please contact us if you have any additional protection functions or doubt about this product.
Model Description
Model Selection Table
|
Model |
Rated working current range |
Applicable motor power |
Communication |
4mA~20mA output |
Note |
|
ZHRA3-5 |
1A~5A |
0.55kW~2.2kW |
Optional |
Optional |
Once core through |
|
ZHRA3-10 |
2A~10A |
1.1kW~4kW |
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|
ZHRA3-30 |
6A~30A |
3 kW~15kW |
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|
ZHRA3-50 |
10A~50A |
5.5kW~22kW |
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|
ZHRA3-200 |
40A~200A |
22kW~90kW |
Technical Parameters
|
Rated control supply voltage |
AC/DC100V~240V、AC220V 、AC380V 50/60Hz |
|
Setting current range |
1A~5A、2A~10A、6A~30A、10A~50A、40A~200A |
|
Protection |
Overload, underload and current imbalance, phase loss stall, grounding, temperature |
|
Setting mode |
Button setting |
|
Start time |
2s~120s adjustable |
|
Tripping class |
tripping class(5,10,10A,20,30) |
|
Current unbalance rate |
40%~90% adjustable |
|
Ground fault current |
50mA~5000mA adjustable |
|
Stall protection |
Stall current ratio 1.2 to 6.0 adjustable, stall protection time 1s~30s adjustable |
|
Auxiliary contacts |
Set off or 1s~(start time-1s)action, achieve star-delta and auto buck start |
|
Underload |
20%~90% of Setting currently adjustable |
|
Contact capacity |
Ith:5A;AC-15:Ue/Ie 380V/0.95A 240V/1.5A |
|
Use category |
AC-15 |
|
IP Class |
IP20 |
|
Installation |
Mainframe panel installation, transformer panel installation by screw or rail |
Wiring Diagram
Dimensions(mm)
