The SZW26-20/D202.2TWBF is a 20A rated current, three-position (1-0-2), two-section (two-layer) rotary changeover switch. Its core feature is an integrated IP65-rated transparent protective housing, effectively protecting against dust and water spray, making it suitable for direct outdoor or harsh industrial environments. The switch contact logic is clear: in position "1", contacts 1-2 and 5-6 are closed; in the middle position "0", all contacts are completely open, providing safety isolation; in position "", contacts 3-4 and 7-8 are closed. Rated operating voltage: AC 440V. (50/60Hz), insulation voltage 690V, using silver alloy contacts and thickened copper conductors to ensure reliability. The internal terminal screws are M3, compatible with 1.0-2.5mm² wires. Mechanical life ≥100,000 cycles, electrical life ≥30,000 cycles.
Application Scenarios: This switch is designed for applications requiring manual switching between two loads or power supplies in humid, dusty, or outdoor environments.
Core Applications: Enables switching between primary and backup equipment (such as water pumps and fans), or selection of automatic/manual operating modes.
Typical Industries:
Water Treatment/Environmental Protection: Control cabinets for outdoor pump stations, used for switching between primary and backup pumps.
Outdoor Equipment: Lighting control, fountain systems, power selection for outdoor air conditioning units.
Food and Pharmaceutical: Manual control of equipment requiring cleaning in humid cleanrooms.
Mobile Machinery: Electrical control of engineering vehicles and special equipment affected by vibration and splashing water.
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