The Siemens 3MU7110-0QA0 is a thermal overload relay designed for motor overload protection in industrial motor control and starter applications. It is specified for contactor mounting, with a Class 10 trip characteristic and screw terminals, making it suitable for integration into compatible motor starter assemblies and control panels.
This Siemens thermal overload relay helps protect motors against sustained overload conditions that can cause excessive heating and affect motor performance. Its contactor-mounted design supports compact motor starter arrangements and can be useful for industrial machinery, pumps, fans, compressors, conveyors and other motor-driven equipment.
The 3MU7110-0QA0 is suitable for applications where reliable thermal overload protection is required as part of a properly coordinated motor protection system. For selection, the relay should be matched with the motor's rated current and the compatible contactor/starter assembly.
The Siemens 3MU7110-0QA0 can be considered for:
The thermal overload protection provided by the relay helps protect motors against prolonged overload conditions, reducing the possibility of excessive heating and motor-related downtime.
Its contactor mounting configuration can simplify motor starter construction and help create an organized control-panel layout. The screw-terminal arrangement also supports practical field wiring and maintenance.
For reliable operation, always ensure the overload relay is correctly matched with the motor full-load current, compatible contactor and overall motor protection arrangement.
SB Smart supplies industrial electrical and automation products to customers across India, including Faridabad, Delhi NCR, Noida, Gurgaon/Gurugram, Ghaziabad, Manesar, Mumbai, Pune, Ahmedabad, Vadodara, Surat, Jaipur, Chandigarh, Ludhiana, Hyderabad, Bengaluru/Bangalore, Chennai, Kolkata, Indore and Lucknow, along with other major industrial locations.
The Siemens 3MU7110-0QA0 can be considered by panel builders, OEMs, electrical contractors, system integrators, machine manufacturers, maintenance teams and industrial automation companies looking for Siemens thermal overload relay solutions.
1. What is Siemens 3MU7110-0QA0?
It is a Siemens thermal overload relay designed for motor overload protection and contactor mounting.
2. What is the trip class of 3MU7110-0QA0?
The provided product specification indicates a Class 10 trip characteristic.
3. Does the 3MU7110-0QA0 have screw terminals?
Yes. The product is specified with screw terminals.
4. What is the 3MU7110-0QA0 used for?
It can be used for thermal overload protection of compatible motors in industrial motor starters, control panels and machinery applications.
5. Is the 3MU7110-0QA0 designed for contactor mounting?
Yes. It is specified for contactor mounting and can be integrated with compatible contactors.
6. Can I buy Siemens 3MU7110-0QA0 from SB Smart?
SB Smart supplies Siemens industrial electrical products across India, subject to product availability and order confirmation.
| Specification | Details |
|---|---|
| Product Name | Thermal Overload Relay |
| Brand | Siemens |
| Series | SINOVA 3MU7 |
| Model Number | 3MU7110-0QA0 |
| SKU | 3MU7110-0QA0 |
| Product Type | Thermal Overload Relay |
| Current Setting Range | 17A – 25A |
| Trip Class | Class 10 |
| Relay Size | Size 1 |
| Mounting Type | Direct Contactor Mounting |
| Compatible Contactors | Siemens 3MT7 Size 1 & Size 2 |
| Main Circuit Connection | Screw Terminals |
| Auxiliary Circuit Connection | Screw Terminals |
| Auxiliary Contacts | 1NO + 1NC |
| Protection Functions | Overload Protection, Phase Failure Protection |
| Reset Function | Manual / Automatic Reset |
| Number of Poles | 3 Pole |
| Rated Operational Voltage | Up to 690V AC |
| Rated Operational Current | 25A |
| Motor Rating @ 400V | 11 kW |
| Motor Rating @ 690V | 22 kW |
| Operating Frequency | 50/60 Hz |
| Rated Insulation Voltage (Ui) | 690V |
| Rated Impulse Withstand Voltage (Uimp) | 6kV |
| Protection Rating | IP20 |
| Operating Temperature | -5°C to +55°C |
| Storage Temperature | -25°C to +70°C |
| Relative Humidity | 10% – 95% |
| Height | 64 mm |
| Width | 44 mm |
| Depth | 92 mm |
| Weight | Approx. 0.175 kg |
| Standards Compliance | IEC 60947-4-1 |
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