Schneider Electric LR9F7375 TeSys LRF Electronic Thermal Overload Relay – 200–330A, Class 10
The Schneider Electric LR9F7375 is a TeSys LRF electronic thermal overload relay with a 200–330A adjustable thermal protection range and Class 10 tripping characteristics. It is designed for motor protection and is compatible with TeSys F contactors LC1F225 to LC1F500.
Description
The Schneider Electric LR9F7375 TeSys LRF electronic thermal overload relay is designed for reliable motor overload protection in high-current industrial motor-control applications. It provides an adjustable 200–330A thermal protection range and Class 10 overload characteristics conforming to IEC 60947-4 standards.
The LR9F7375 overload relay is designed for use with TeSys F contactors from LC1F225 through LC1F500. It can be mounted directly on a compatible contactor or installed using a plate mounting arrangement. The relay incorporates 1NO + 1NC auxiliary contacts, manual front reset, trip indication and a full-load current adjustment dial.
The relay operates on an AC 50/60Hz network, has a 1000V AC rated operational voltage, 1000V insulation voltage, and 8kV impulse withstand voltage. Its electronic protection system includes phase-failure sensitivity and temperature compensation from -20°C to +70°C.
For installation, the LR9F7375 uses screw-clamp terminals for the control circuit and M10 lug-ring terminals for the power circuit. The device has an IP20 protection rating and is suitable for operation from -20°C to +55°C, with storage temperatures from -40°C to +85°C.
| Specification | Details |
|---|---|
| Manufacturer | Schneider Electric |
| Model / Reference | LR9F7375 |
| Product Range | TeSys LRF |
| Device Short Name | LR9F |
| Product Type | Electronic Thermal Overload Relay |
| Application | Motor Protection |
| Thermal Protection Adjustment Range | 200–330A |
| Thermal Overload Class | Class 10 |
| Thermal Class Standard | IEC 60947-4 |
| Product Compatibility | LC1F225...LC1F500 |
| Network Type | AC |
| Network Frequency | 50/60Hz |
| Supply Voltage Limits | 17–32V |
| Rated Operational Voltage | 1000V AC, 50/60Hz |
| Rated Insulation Voltage | 1000V AC |
| Rated Impulse Withstand Voltage | 8kV |
| Tripping Threshold | 1.12 ± 0.06 In |
| Phase Failure Sensitivity | Tripping in 4s ±20% |
| Auxiliary Contacts | 1NO + 1NC |
| Conventional Free-Air Thermal Current | 5A, control circuit |
| Reset Type | Manual reset |
| Control Type | Full-load current adjustment dial |
| Trip Indication | Local trip indicator |
| Temperature Compensation | -20°C to +70°C |
| Mounting | Plate / Direct on Contactor |
| Control Terminals | Screw-clamp terminals |
| Power Terminals | M10 lug-ring terminals |
| Control Terminal Tightening Torque | 1.2N·m |
| Power Terminal Tightening Torque | 35N·m |
| IP Degree of Protection | IP20 |
| Operating Temperature | -20°C to +55°C |
| Storage Temperature | -40°C to +85°C |
| Maximum Altitude | ≤2000m without derating |
| Height | 136.8mm |
| Width | 150mm |
| Depth | 127.6mm |
| Product Weight | 2.32kg |
| Standards | VDE 0660, IEC/EN 60947-4-1, IEC 60255-17, IEC 60255-8 |
| Certifications | UL, CSA |
| Protective Treatment | TH |
| Warranty Period | 18 months |
Key Features
- 200–330A adjustable thermal protection range
- Class 10 electronic thermal overload protection
- Designed for motor protection
- Compatible with TeSys F LC1F225…LC1F500 contactors
- 1NO + 1NC auxiliary contacts
- Manual front reset
- Integrated trip indicator
- Full-load current adjustment dial
- Phase failure protection
- 1.12 ± 0.06 In tripping threshold
- 1000V AC rated operational voltage
- 8kV impulse withstand voltage
- -20°C to +70°C temperature compensation
- IP20 protection
- Direct mounting on compatible contactors
- Screw-clamp control terminals
- M10 power terminals
- UL and CSA certified
- Suitable for demanding industrial motor-control applications
Applications
The Schneider Electric LR9F7375 overload relay is suitable for:
- Industrial motor protection
- High-current motor starters
- TeSys F contactor assemblies
- Heavy-duty machinery
- Pumps and large pumping systems
- Fans and ventilation equipment
- Compressors
- Industrial production machinery
- Motor control panels
- High-power three-phase motor applications
- 132–160kW motor protection at 400V where the selected motor and coordination requirements are appropriate.
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