Schneider LR2K0312 TeSys K Overload Relay 3.7-5.5A Class 10A Direct Mount

The Schneider Electric LR2K0312 is a TeSys K differential thermal overload relay for motor protection in AC and DC networks. It offers a current adjustment range of 3.7 to 5.5 A with Class 10A tripping per IEC 60947-4-1, and includes phase loss detection for reliable three-phase motor protection.

Technical specifications:

• Commercial reference: LR2K0312
• Manufacturer: Schneider Electric
• EAN:
• Series / range: TeSys K (TeSys LRK)
• Network type: AC / DC
• Thermal overload adjustment: 3.7...5.5 A
• Tripping class: Class 10A per IEC 60947-4-1
• Rated insulation voltage: 690 V (IEC 60947), 750 V (VDE 0110 group C)
• Rated impulse withstand voltage: 6 kV
• Auxiliary contacts: 1 NO + 1 NC
• Thermal current (Ith): 6 A for signal circuit
• IP protection: IP2x per IEC 60529
• Operating temperature: -20...55 °C without change of characteristics
• Mounting: Below contactor; panel or DIN rail with accessories
• Compatible contactors: LC1K, LC7K, LP1K, LP4K
• Connection: Screw terminals, 1.5...4 mm² solid, 0.75...4 mm² flexible
• Tightening torque: 1.3 N.m
• Dimensions (WxHxD): 45 x 58 x 65 mm
• Weight: 0.145 kg
• Certifications: UL, CSA, UKCA
• Standards: IEC 60947, VDE 0660, BS 4941, NF C 63-650

Features and benefits:

• Phase loss sensitivity per IEC 60947-4-1 for enhanced motor protection
• Yellow trip indicator for quick local fault identification
• Manual or automatic reset via selector switch; red test button and blue stop button included
• Direct mounting under TeSys K contactors (LC1K, LP1K, LP4K, LC7K) without additional hardware
• Flame retardant housing: V1 per UL 94, fire resistance at 850 °C per IEC 60695-2-1

Applications:

• Motor starter assemblies in industrial control panels with TeSys K contactors
• Overload protection for pumps, fans, and conveyors in AC and DC drive systems
• Motor control centers requiring Class 10A trip coordination
• Light industrial and building automation motor protection circuits

Compliant with IEC 60947, VDE 0660, BS 4941, and NF C 63-650. Part of the Schneider Electric TeSys K range.

Also known as: Schneider LR2K0312, Schneider Electric LR2K0312, TeSys K overload relay, thermal motor protection relay.