Documentation & Downloads
Schneider Electric LR2K0312 TeSys K Differential Thermal Overload Relay 3.7-5.5A Class 10A
- MPN: LR2K0312
- PPN: SCH-LR2K0312
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Description
TeSys LRK thermal overload relay, 5.5A/690V, thermal setting range 3.7-5.5A, tripping class 10A, for protection of 3-phase motors 2.2kW@400V. Differential device with phase failure and load unbalance detection. It provides a thermal adjustement dial, a manual-automatic reset selector, a test slide switch for simulation of a tripping, reset/stop button, 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 LC1K06-K16. Mounting on DIN rail, separated from the contactor, with use of a terminal block LA7K0064 (to be ordered separately). Multi standards certified (IEC, UL, CSA, CCC, EAC), Green Premium compliant (RoHs/Reach).
Features
- Featuring a calibrated bimetallic dial adjustable from 3.7 to 5.5 Amps, this thermal overload relay allows commercial electricians to fine-tune protection exactly to a motor's nameplate FLA (Full Load Amps). This precision calibration prevents unnecessary nuisance tripping during startup cycles while ensuring tight, highly reliable protection against sustained overcurrent conditions on small pumps, fans, and conveyor drives.
- Designed for seamless mechanical integration, this relay mounts directly to the underside of Schneider Electric TeSys K-Series mini-contactors (LC1K, LP1K). This plug-and-play architecture forms a compact, space-saving motor starter assembly that completely eliminates the need for interconnecting wires, reducing enclosure clutter and cutting labor time for panel builders.
- This versatile relay features a selectable manual or automatic reset selector, allowing maintenance teams to configure safe system recovery workflows—such as requiring a technician to physically check a machine before restarting or allowing automated systems to cycle back online safely. A front-accessible test button is also integrated, letting operators manually trip the mechanism to verify auxiliary control wiring and signaling circuits during routine maintenance.
- Outfitted with built-in, isolated 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts, this relay effortlessly bridges the gap between power protection and control logic. The NC contact instantly breaks the contactor coil circuit upon an overload event to stop the motor, while the NO contact simultaneously closes to trigger an alarm pilot light or send a fault input signal to an upstream PLC or automation controller.
Documentation & Downloads
Specifications
Additional
- Thermal Protection Adjustment Range
- 3.7-5.5 A
- Tripping Class
- Class 10A IEC 60947-4-1
- Auxiliary Contacts
- 1 NO + 1 NC
- Rated Impulse Withstand Voltage
- 6 kV
- Conventional Free Air Thermal Current
- 6 A signalling circuit
- Control Type
- Red push-button trip test, Blue push-button stop/manual reset, Manual/automatic reset selector
- Mounting Type
- DIN rail, under contactor, or plate with accessories
- Dimensions
- 58 mm H x 45 mm W x 65 mm D (2.28 x 1.77 x 2.56 in)
- Tightening Torque
- 1.3 N·m screw clamp terminals
- Standards
- IEC 60947, UL, CSA, VDE 0660, BS 4941, NF C 63-650, CCC, EAC, UKCA
- IP Degree of Protection
- IP2X IEC 60529
- Fire Resistance
- 850 °C (IEC 60695-2-1)
- Mechanical Robustness
- Shocks 10 Gn 11 ms, Vibrations 2 Gn 5-300 Hz (IEC 60068-2-27, IEC 60068-2-6)
Rated Operational Voltage<= 690 V power circuit
Motor Power Rating2.2 kW @ 400 V
Rated Insulation Voltage690 V power circuit (BS 4941, IEC 60947, VDE 0110 group C, CSA C22.2 No 14)
Network Frequency<= 400 Hz
Phase Failure SensitivityYes (IEC 60947-4-1)
Operating Ambient Temperature-20 to 55 °C without derating (IEC 60947)
Connection TypeScrew clamp terminals, 0.34-4 mm² solid or flexible
Weight0.145 kg (0.32 lb)
Operating Altitude2000 m without derating
ComplianceGreen Premium, RoHS, REACH, Mercury Free
Storage Ambient Temperature-40 to 70 °C
Flame RetardanceV1 UL 94, NF F 16-101, NF F 16-102
Country of OriginCzech Republic
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CAD
$65.34
/ EA
Available to Order
Available to Ship Same/Next Business Day if In Stock and Ordered before 12:00 PM EST
Company Stock:
0
Looking to buy a large quantity?
To view product inventory
CAD$65.34/ EA
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