EN
Home ProductMotor Protector Relay
Description
General
Applications
Used in switchgear, air conditioning units, elevator machine room, pumps, fans and other motor control applications, With overload, phase loss, phase unbalance and stall protection.
Features
Built-in microprocessor, installed in a cabinet or 1/4 drawer unit. Current measurement accuracy ≤0.2%. Button setting, LCD backlit display current, fault status. 5 optional adjustable overload characteristic. With 1-set changeover and1-set auxiliary NO contacts. Enable star-delta and auto buck starts. Optional 4mA~20mA analog output and RS485 communication interface, support Modbus protocol, available network communication.
Model Description
Model Selection Table
|
Model |
Rated working current range |
Applicable motor |
Communication |
4mA~20mA |
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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|
ZHR43-30 |
6A~30A |
3kw~15kW |
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|
ZHRA3-50 |
10A~50A |
5.5kW~22kW |
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|
ZHRA3-200 |
40A~200A |
22kw~90kW |
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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. |
|
Setting mode |
Button setting |
|
Start time |
2s~120s adjustable |
|
Tripping class |
tripping class (5, 10, 10A, 20, 30) |
|
Current unbalance rate |
40%~90% adjustable |
|
Round fault current |
50mA~5000mA adjustable |
|
Stall protection |
Stall current ration 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 current adjustable |
|
Contact capacity |
lth: 5A; AC-15: Ue/le 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)
Ordering Instructions
Model Significance:
ZHRA3-200 motor protection relay, can work both AC and DC, both single phase and three phase power system, rated, setting current range. Small design, multi protect function, current read, set or adjust by end user directly. 2 different method mounted by Din rail or screw according to your choice. Long working life with 2 years warranty, easy to use. Welcome OEM and ODM required.
