HYUNDAI HITH-22K Thermal Overload Relay

Overview

HYUNDAI HITH-22K is a HiTH series three-pole thermal overload relay for Hyundai HiMC contactor frame 9~22. HYUNDAI HITH-22K adopts bimetallic thermal sensing principle, provides overload protection and phase loss protection for three-phase AC motors. This HYUNDAI HITH-22K is widely stocked as spare motor thermal protection unit for Hyundai motor control assemblies.

Features

HYUNDAI HITH-22K supports ambient temperature compensation, stable trip performance under changing cabinet temperature. It has three operation modes including manual reset, automatic reset and test function for on-site inspection. HITH-22K comes with built-in 1NO + 1NC auxiliary contacts, can send trip alarm signal to PLC or host control system. It supports direct plug-on mounting to HiMC 9~22 contactor or standalone DIN rail installation. It has trip indicator window to show protection status clearly. This relay complies with IEC 60947-4-1 standard, CE certified. It is designed for 24/7 continuous operation in pump, fan, compressor, conveyor and packaging machine motor control panels. Different current ranges are available under HITH-22K model family.

Specifications

HYUNDAI HITH-22K Thermal Overload Relay Brand: HYUNDAI ELECTRIC Model: HITH-22K Series: HiTH Type: three-pole thermal overload relay Matching contactor: HiMC 9 ~ 22 frame Rated insulation voltage: 690 VAC Trip functions: overload, phase loss Auxiliary contact: 1NO + 1NC Reset mode: manual / automatic selectable Built-in function: test button, trip indicator Mounting: direct mount on contactor or separate DIN rail mount Terminal: screw terminal Protection class: IP20 Ambient temperature compensation: -25℃ ~ +55℃ Status: active Hyundai motor protection spare

Principle

HYUNDAI HITH-22K passes three-phase motor current through internal bimetallic strips. This Thermal Overload Relay heats the bimetallic element under overload condition and triggers mechanical trip. It accelerates trip response when phase loss occurs. The auxiliary contact opens the control circuit and outputs alarm signal to stop motor and avoid winding burnout.

Applications

HYUNDAI HITH-22K is deployed in water treatment pumps, HVAC fans, compressors, conveyor drives and packaging machine motor feeders. It provides thermal overload and phase failure protection for three-phase motors. HYUNDAI HITH-22K is stocked as spare thermal overload relay for Hyundai HiMC contactor control assemblies.