Description:1.Pressing the ON button is a self-locking state. When the OFF button is pressed, the ON button will reset.2.It is characteristic of accurate on-off loaded current, safe and reliable high intensity of machinery.3.Widely in machine tools, textile machinery, etc. The switch is the best choice for machinery power.4.This switch can control three phases motor directly, no need to use magnetic switch. Screw terminals ensure easily wiring. Specification:Product Name: Push Button SwitchModel: TBSN-330Material: MetalType: ON/OFFVoltage/ Current:380VAC 30AMounting Hole diameter: 4mm/ 0.16"Total Size (Approx.): 105 x 63 x 54mm / 4.13" x 2.48" x 2.12" (L*W*H)Package Content: 1 x Push Button Switch