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The APEM Panel Switches 6421A-03LMK-2V is a single pole autoswitch designed for robust electrical control applications. Featuring nickel-plated bushings, bright chrome-plate locking levers with two secure positions, and a 10,000-cycle electrical life, this switch delivers reliable performance across extreme temperatures (-40°C to +85°C) and high-voltage environments. Its 1,000 MΩ insulation resistance and 2,000 Vrms dielectric strength ensure safety and durability in demanding industrial settings.
The APEM Panel Switches 6421A-03LMK-2V is a single pole autoswitch engineered for high-reliability electrical control in industrial environments. This switch combines robust construction with precise electrical performance, featuring a nickel-plated bushing, bright chrome-plate locking levers that secure in two positions, and a solder lug terminal design. With an operating temperature range of -40°C to +85°C, it withstands extreme conditions while maintaining a 10,000-cycle electrical life at full load. The switch also includes front panel sealing with one O-ring and sealing washer for environmental protection, ensuring long-term functionality in harsh industrial applications.
The 6421A-03LMK-2V delivers precise electrical control with a maximum initial contact resistance of 10 mΩ and a dielectric strength of 2,000 Vrms at 50 Hz. Its insulation resistance of 1,000 MΩ min. at 500 VDC ensures reliable isolation between terminals, critical for high-voltage applications. The switch supports 10,000 cycles of electrical operation at full load, making it suitable for demanding industrial environments where frequent switching is required.
Engineered for extreme conditions, this panel switch operates across a wide temperature range from -40°C to +85°C. The front panel sealing with one O-ring and sealing washer provides effective protection against dust and moisture, ensuring long-term reliability in harsh industrial settings without compromising performance.
The switch features a robust mechanical design with a maximum torque of 1.50 Nm (1.10 Ft.lb) for nut tightening, ensuring secure installation without damage. Its nickel-plated bushing and bright chrome-plate locking levers provide a durable finish that resists corrosion and wear, maintaining consistent performance over time.
| Feature | Specification |
|---|---|
| Insulation resistance | 1,000 MΩ min. at 500 VDC |
| Dielectric strength | 2,000 Vrms 50 Hz min. between terminals3,000 Vrms 50 Hz min. between terminals and frame |
| Torque | 1.50 Nm (1.10 Ft.lb) max. applied to nut |
| Panel thickness | 5 mm (.196) max. |
| Operating temperature | -40 °C to +85 °C |
| Sealing | Front Panel Sealing with One O-Ring and Sealing Washer |
| Electrical Functions | ON OFF |
The APEMPanel Switches 6421A-03LMK-2V is presented using the documented product characteristics available for this model.
| Feature | Specification |
|---|---|
| Insulation resistance | 1,000 MΩ min. at 500 VDC |
| Dielectric strength | 2,000 Vrms 50 Hz min. between terminals3,000 Vrms 50 Hz min. between terminals and frame |
| Torque | 1.50 Nm (1.10 Ft.lb) max. applied to nut |
| Panel thickness | 5 mm (.196) max. |
| Operating temperature | -40 °C to +85 °C |
| Sealing | Front Panel Sealing with One O-Ring and Sealing Washer |
| Electrical Functions | ON OFF |
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