Features: 4 types of button switches with different indicator light colors available for selection. Long service life with a mechanical durability of 5,000,000 cycles and an electrical life of 500,000 cycles. Indicator light operates on 220VAC power supply. Contact material is silver alloy, offering low resistance and high electrical conductivity. Suitable for control applications in AC 50Hz circuits, up to 380V AC and 220V DC, compatible with electromagnetic starters, contactors, relays, and other electrical systems. Specifications: Model: BEM38-11D Button Color: Red, Yellow, Blue, Green (optional) Indicator Light Voltage: AC 220V Switch Rated Voltage: 440V Ui: AC 660V Working Current: 10A Function: Self-Reset Contact Configuration: 1 NO + 1 NC Installation Hole Diameter: 22mm (0.87in) Rated Thermal Current: 15A Contact Material: Silver alloy Contact Resistance: 50 ohms Insulation Resistance: 50 M Mechanical Life: 5,000,000 operations Electrical Life: 500,000 operations Dimensions: 82 x 35 x 29mm (3.23 x 1.38 x 1.14in) Package Includes: 10 x Button Switches