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Thermal overload relay, TeSys LRD, 5.5...8 A, class 10A
- Description
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Description
TeSys Deca Overload Relays
TeSys Deca TeSys Deca is a flexible range of thermal overload relays for motors from 0.06 kW to 75 kW. Coordinated with TeSys Deca contactors, they can be fitted directly onto the contactors for compactness, or apart using accessories.
Easy Selection
Adjustment range makes new relays a natural choice for a wide range of applications, from 0.1A to 110A.
Simple to install
Self-powering eliminates the need for an external power supply. Can be combined with TeSys Deca contactors to form an extremely optimised starter.
Efficiency
Close-couple configuration for reduced installation time and selectable trip class (5, 10, 20, 30) allows you to set the desired level of protection.
Enhance your power solutions with our extensive range of accessories
Terminal Block
Manual overload
reset push-button
Mechanical
remote control
Gain peace of mind, quality, and value for your installations
Motor Safety and Control with TeSys Deca
TeSys Deca overload relays are widely used across industries, infrastructure, and buildings to provide reliable protection against motor overload and phase loss.
They serve as the ideal complement to magnetic-only circuit breakers by managing thermal protection for motors. Additionally, they offer selectable tripping options—manual, remote, or automatic reset—for enhanced process management and operational flexibility.
Trip indication
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Manual or automatic reset
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Direct mounting
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Overview
| Activity | PPCTR |
|---|---|
| Part Number | LRD12 |
| Weight | 142.0 g |
| Package1 Length*Width*Height | 9.0 cm x 7.9 cm x 5.0 cm |
| Country of Manufacturing | France |
| [Ith] conventional free air thermal current | 5 A for signalling circuit |
| [ue] Rated Operational Voltage | 690 V AC 0...400 Hz for power circuit conforming to IEC 60947-4-1 |
| [Ui] rated insulation voltage | power circuit: 600 V conforming to CSA, power circuit: 600 V conforming to UL, power circuit: 690 V conforming to IEC 60947-4-1 |
| [Uimp] rated impulse withstand voltage | 6 kV |
| ambient air temperature for operation | -20-60 °C without derating conforming to IEC 60947-4-1 |
| ambient air temperature for storage | -60-70 °C |
| associated fuse rating | 4 A gG for signalling circuit, 4 A BS for signalling circuit |
| auxiliary contact composition | 1 NO + 1 NC |
| climatic withstand | conforming to IACS E10 |
| compatibility code | LRD |
| connections - terminals | control circuit: screw clamp terminals 2 cable(s) 1-2.5 mm² flexible without cable end, control circuit: screw clamp terminals 2 cable(s) 1-2.5 mm² flexible with cable end, control circuit: screw clamp terminals 2 cable(s) 1-2.5 mm² solid, power circuit: screw clamp terminals 1 cable(s) 1.5-10 mm² flexible without cable end, power circuit: screw clamp terminals 1 cable(s) 1-4 mm² flexible with cable end, power circuit: screw clamp terminals 1 cable(s) 1-6 mm² solid |
| control type | red push-button: stop, blue push-button: reset |
| Depth | 70 mm |
| device short name | LRD |
| dielectric strength | 1.89 kV at 50 Hz conforming to IEC 60947-1 |
| flame retardance | V1 conforming to UL 94 |
| Height | 66 mm |
| IP degree of protection | IP20 conforming to IEC 60529 |
| mechanical robustness | vibrations: 6 Gn conforming to IEC 60068-2-6, shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7 |
| mounting support | plate, with specific accessories, rail, with specific accessories, under contactor |
| net weight | 0.124 kg |
| network frequency | 0...400 Hz |
| network type | DC, AC |
| permissible current | 1.5 A at 240 V AC-15 for signalling circuit, 0.1 A at 250 V DC-13 for signalling circuit |
| phase failure sensitivity | tripping current 130 % of Ir on two phase, the last one at 0 |
| product certifications | IEC, UL, CSA, CCC, EAC, BV, RINA, DNV-GL, LROS (Lloyds register of shipping), ATEX INERIS, UKCA |
| product compatibility | LC1D18, LC1D25, LC1D32, LC1D12, LC1D09, LC1D38 |
| product or component type | differential thermal overload relay |
| Range | TeSys, TeSys Deca |
| rated operational voltage limits | 690 V AC 0...400 Hz for power circuit conforming to IEC 60947-4-1 |
| relay application | motor protection |
| standards | EN/IEC 60947-4-1, EN/IEC 60947-5-1, UL 60947-4-1, UL 60947-5-1, CSA C22.2 No 60947-4-1, CSA C22.2 No 60947-5-1, GB/T 14048.4, GB/T 14048.5, EN 50495 |
| temperature compensation | -20-60 °C |
| thermal overload class | class 10A conforming to IEC 60947-4-1 |
| thermal protection adjustment range | 5.5-8 A |
| tightening torque | control circuit: 1.7 N.m - on screw clamp terminals, power circuit: 1.7 N.m - on screw clamp terminals |
| tripping threshold | 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1 |
| width | 45 mm |
| ambient air temperature for operation | -20-60 °C without derating conforming to IEC 60947-4-1 |
| standards | EN/IEC 60947-4-1, EN/IEC 60947-5-1, UL 60947-4-1, UL 60947-5-1, CSA C22.2 No 60947-4-1, CSA C22.2 No 60947-5-1, GB/T 14048.4, GB/T 14048.5, EN 50495 |
| product compatibility | LC1D18, LC1D25, LC1D32, LC1D12, LC1D09, LC1D38 |
| mechanical robustness | vibrations: 6 Gn conforming to IEC 60068-2-6, shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7 |
Documents
Reviews
Description
TeSys Deca Overload Relays
TeSys Deca TeSys Deca is a flexible range of thermal overload relays for motors from 0.06 kW to 75 kW. Coordinated with TeSys Deca contactors, they can be fitted directly onto the contactors for compactness, or apart using accessories.
Easy Selection
Adjustment range makes new relays a natural choice for a wide range of applications, from 0.1A to 110A.
Simple to install
Self-powering eliminates the need for an external power supply. Can be combined with TeSys Deca contactors to form an extremely optimised starter.
Efficiency
Close-couple configuration for reduced installation time and selectable trip class (5, 10, 20, 30) allows you to set the desired level of protection.
Enhance your power solutions with our extensive range of accessories
Terminal Block
Manual overload
reset push-button
Mechanical
remote control
Gain peace of mind, quality, and value for your installations
Motor Safety and Control with TeSys Deca
TeSys Deca overload relays are widely used across industries, infrastructure, and buildings to provide reliable protection against motor overload and phase loss.
They serve as the ideal complement to magnetic-only circuit breakers by managing thermal protection for motors. Additionally, they offer selectable tripping options—manual, remote, or automatic reset—for enhanced process management and operational flexibility.
Trip indication
Lorem Ipsum is simply dummy text of the printing and
Manual or automatic reset
Lorem Ipsum is simply dummy text of the printing and
Direct mounting
Lorem Ipsum is simply dummy text of the printing and
Overview
| Activity | PPCTR |
|---|---|
| Part Number | LRD12 |
| Weight | 142.0 g |
| Package1 Length*Width*Height | 9.0 cm x 7.9 cm x 5.0 cm |
| Country of Manufacturing | France |
| [Ith] conventional free air thermal current | 5 A for signalling circuit |
| [ue] Rated Operational Voltage | 690 V AC 0...400 Hz for power circuit conforming to IEC 60947-4-1 |
| [Ui] rated insulation voltage | power circuit: 600 V conforming to CSA, power circuit: 600 V conforming to UL, power circuit: 690 V conforming to IEC 60947-4-1 |
| [Uimp] rated impulse withstand voltage | 6 kV |
| ambient air temperature for operation | -20-60 °C without derating conforming to IEC 60947-4-1 |
| ambient air temperature for storage | -60-70 °C |
| associated fuse rating | 4 A gG for signalling circuit, 4 A BS for signalling circuit |
| auxiliary contact composition | 1 NO + 1 NC |
| climatic withstand | conforming to IACS E10 |
| compatibility code | LRD |
| connections - terminals | control circuit: screw clamp terminals 2 cable(s) 1-2.5 mm² flexible without cable end, control circuit: screw clamp terminals 2 cable(s) 1-2.5 mm² flexible with cable end, control circuit: screw clamp terminals 2 cable(s) 1-2.5 mm² solid, power circuit: screw clamp terminals 1 cable(s) 1.5-10 mm² flexible without cable end, power circuit: screw clamp terminals 1 cable(s) 1-4 mm² flexible with cable end, power circuit: screw clamp terminals 1 cable(s) 1-6 mm² solid |
| control type | red push-button: stop, blue push-button: reset |
| Depth | 70 mm |
| device short name | LRD |
| dielectric strength | 1.89 kV at 50 Hz conforming to IEC 60947-1 |
| flame retardance | V1 conforming to UL 94 |
| Height | 66 mm |
| IP degree of protection | IP20 conforming to IEC 60529 |
| mechanical robustness | vibrations: 6 Gn conforming to IEC 60068-2-6, shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7 |
| mounting support | plate, with specific accessories, rail, with specific accessories, under contactor |
| net weight | 0.124 kg |
| network frequency | 0...400 Hz |
| network type | DC, AC |
| permissible current | 1.5 A at 240 V AC-15 for signalling circuit, 0.1 A at 250 V DC-13 for signalling circuit |
| phase failure sensitivity | tripping current 130 % of Ir on two phase, the last one at 0 |
| product certifications | IEC, UL, CSA, CCC, EAC, BV, RINA, DNV-GL, LROS (Lloyds register of shipping), ATEX INERIS, UKCA |
| product compatibility | LC1D18, LC1D25, LC1D32, LC1D12, LC1D09, LC1D38 |
| product or component type | differential thermal overload relay |
| Range | TeSys, TeSys Deca |
| rated operational voltage limits | 690 V AC 0...400 Hz for power circuit conforming to IEC 60947-4-1 |
| relay application | motor protection |
| standards | EN/IEC 60947-4-1, EN/IEC 60947-5-1, UL 60947-4-1, UL 60947-5-1, CSA C22.2 No 60947-4-1, CSA C22.2 No 60947-5-1, GB/T 14048.4, GB/T 14048.5, EN 50495 |
| temperature compensation | -20-60 °C |
| thermal overload class | class 10A conforming to IEC 60947-4-1 |
| thermal protection adjustment range | 5.5-8 A |
| tightening torque | control circuit: 1.7 N.m - on screw clamp terminals, power circuit: 1.7 N.m - on screw clamp terminals |
| tripping threshold | 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1 |
| width | 45 mm |
| ambient air temperature for operation | -20-60 °C without derating conforming to IEC 60947-4-1 |
| standards | EN/IEC 60947-4-1, EN/IEC 60947-5-1, UL 60947-4-1, UL 60947-5-1, CSA C22.2 No 60947-4-1, CSA C22.2 No 60947-5-1, GB/T 14048.4, GB/T 14048.5, EN 50495 |
| product compatibility | LC1D18, LC1D25, LC1D32, LC1D12, LC1D09, LC1D38 |
| mechanical robustness | vibrations: 6 Gn conforming to IEC 60068-2-6, shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7 |