Schneider Electric LRD16 Thermal Overload Relay 9-13A Class 10A 1NO+1NC, 66mm Height
Schneider Electric LRD16 Thermal Overload Relay 9-13A Class 10A 1NO+1NC, 66mm Height
- MPN: LRD16
- PPN: SCH-LRD16
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CAD$124.05/ EA
Description
TeSys LRD thermal overload relay, 13A/690V, thermal setting range 9-13A, tripping class 10A, for protection of 3-phase motors 5.5kW@400V. Differential device with phase failure and load unbalance detection. It provides a thermal adjustement dial, a manual-automatic reset selector, a test selector for simulation of a tripping, reset and stop buttons, a flag indicator and 2 auxiliary contacts 1NO+1NC for fault signalling. Settings are protected by a transparent cover lockable by sealing. Connection by screw clamp terminals, it connects directly to the bottom terminals of 3-pole contactors LC1D12-D38. Mounting on DIN rail or screw fixing, separated from the contactor, with use of a terminal block LAD7B106 (to be ordered separately). Multi standards certified (IEC, UL, CSA, CCC, EAC, ATEX, Marine), Green Premium compliant (RoHs/Reach).
Features
- The LRD16 is a TeSys Deca (formerly TeSys D) differential thermal overload relay. It acts as the "sentinel" for your motor, protecting it from overheating caused by sustained overloads or phase failures. It is designed to sit between the contactor and the motor, monitoring the current and tripping the control circuit before the motor windings suffer permanent damage.
- This model features an adjustable dial with a range of 9 to 13 Amperes. To set it correctly, you rotate the dial to the Full Load Amps (FLA) value found on your motor's nameplate. As a Class 10A device, it is engineered to trip in 10 seconds or less at 7.2 times the set current, providing the standard protection required for most industrial and commercial motors.
- The LRD16 is designed for "direct mounting" beneath Schneider TeSys Deca contactors, specifically models LC1D12 through LC1D38. It features three rigid copper pins that plug directly into the contactor's load terminals, creating a single, rigid motor starter unit. If you need to mount it away from the contactor on a DIN rail, you must use a separate terminal block (LAD7B106).
- This relay is "differential," meaning it is highly sensitive to phase imbalance. If one phase drops out (single-phasing) or if there is a significant voltage difference between phases, the internal mechanism trips faster than it would for a standard overload. This is critical for preventing the rapid, destructive heat buildup that occurs when a three-phase motor tries to run on only two phases.
- he unit includes integrated auxiliary contacts (1 NO + 1 NC) used to signal a fault to a PLC or to cut the power to the contactor's coil. It also features a red "Stop/Test" button and a blue "Reset" selector that allows for two modes: Manual (H): Stays tripped until a human physically resets it (the safest mode for troubleshooting). Automatic (A): Resets itself automatically once the internal components cool down.
Specifications
- Thermal overload current range
- 9-13 A
- Rated power
- 5.5 kW @ 400 V
- Rated insulation voltage
- power circuit 600 V CSA, 600 V UL, 690 V IEC 60947-4-1
- Conventional free air thermal current
- 5 A signalling circuit
- Tripping threshold
- 1.14 b1 0.06 Ir IEC 60947-4-1
- Dielectric strength
- 1.89 kV 50 Hz IEC 60947-1
- Height
- 66 mm
- Net weight
- 0.124 kg
- Mounting type
- DIN rail or screw fixing
- Tightening torque
- 1.7 N.m screw clamp terminals (control and power circuit)
- Control type
- red push-button stop, blue push-button reset
- Ambient storage temperature
- -60 to 70 b0C
- Mechanical robustness
- vibrations 6 Gn IEC 60068-2-6; shocks 15 Gn for 11 ms IEC 60068-2-7
- 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
- Country of origin
- France
Thermal overload classclass 10A IEC 60947-4-1
Voltage rating690 V AC 0-400 Hz power circuit
Impulse withstand voltage6 kV
Permissible current1.5 A 240 V AC-15 signalling circuit, 0.1 A 250 V DC-13 signalling circuit
Operating frequency0-400 Hz
Width45 mm
Depth70 mm
Mounting supportplate, with specific accessories; rail, with specific accessories; under contactor
Connection typescrew clamp terminals, control circuit 2 1-2.5 mmb2 flexible or solid, power circuit 1 1.5-10 mmb2 flexible or solid
Auxiliary contacts1 NO + 1 NC
Ambient operating temperature-20 to 60 b0C without derating IEC 60947-4-1
Flame retardanceV1 UL 94
IP degree of protectionIP20 IEC 60529
ComplianceIEC, UL, CSA, CCC, EAC, BV, RINA, DNV-GL, LROS, ATEX, INERIS, UKCA
Warranty period18 months
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