| Customization: | Available |
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| Theory: | Thermal Relay |
| Usage: | General Purpose |
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SMR-type thermal overload relay is mainly used in the electric system with AC 50Hz-60Hz, rated operation voltage up to 660V,current to 800A. It is used to protect AC three-phase asynchronous motor against overload and open-phase. This products can be properly combined with contactors and installed in an enclosure as motor starter to protect the motor from overload and open phase.
Characteristics:
When the thermal overload relay tripped, the trip indicator will go up 2-3mm;When the thermal overload relay on the mode of manual reset ,you can put on the reset button to reset.
Automatic reset:put on the reset button and turn 90°anticlockwise.
Main circuit terminal and control circuit terminal is clearly distinguished to avoid wrong wiring by manual.
Technical Parameters:
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Type |
SMR-22 |
SMR-40 |
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Return Mode |
Manual or Auto return |
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Current Setting Range |
Setting Range (A) |
Setting Range (A) |
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1-1.6 1.6-2.5 2.5-4 |
6-9 7-10 9-13
12-18
16-22
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18-26 24-36 28-40 |
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Contact Arrangement |
1NO+1NC |
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Model of Matching Contactors |
SMC-9, SMC-12, SMC-18, SMC-22 |
SMC-32, SMC-40, SMC-48 |
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