Overload Relays รุ่น TH-T ใช้คู่กับคอนเทรคเตอร์ รุ่น S-T(D) เพื่อปกป้องมอเตอร์จากไฟกระแสเกิน TH-T Series Features Applicable to motor protection: can be used for standard motor overload and locking protection. Easy current value setting: can directly set the motor current value. Adjust with a cross-head / straight-slot screwdriver. Reset method change: easy to change between manual reset and automatic reset. With 1a1b contact: can use different voltages for a and b contacts. Terminal cover as standard equipment (TH-T18/TH-T50): Having a terminal cover as standard equipment reduces the time for customers to specify a separate model name or arrange for options. This reduces inventory and reduces cover costs. Safety has also improved for protecting the live parts.