ZHUCO SZW26-25/2GS OFF-ON two-position two-section power switch

SZW26-25/2GS Power Switch
1. Product Overview: This product is a two-position (OFF-ON) rotary main power switch. It features a two-section design, using multiple sets of contacts in parallel to achieve reliable circuit switching, suitable for applications requiring direct connection or disconnection of the main power supply.
2. Installation Characteristics
Standard panel mounting (refer to product drawings for specific mounting dimensions). Robust structure and easy installation.
3. Electrical Parameters
Rated Voltage: AC 440V (50/60Hz); DC 240V
Rated Current: 25A
Contact Configuration: 8 terminals, four sets of contacts operate simultaneously.
Position OFF: All contacts (1-2, 3-4, 5-6, 7-8) are open.
Position ON: All contacts (1-2, 3-4, 5-6, 7-8) are closed simultaneously.
4. Structure and Materials
Contacts: Silver alloy material, ensuring low contact resistance, good conductivity, and resistance to welding under high current.
Conductors: Thickened copper components, meeting the long-term current carrying requirements of 25A with low temperature rise.
Insulation and Housing: Made of flame-retardant, high-temperature resistant, environmentally friendly engineering plastics, providing reliable electrical insulation and mechanical protection.
Operating Mechanism: Clear positions, moderate operating torque, and reliable contact.
5. Environmental Conditions
Ambient Temperature: -25°C to +40°C (average temperature over 24 hours ≤ +35°C)
Altitude: ≤ 2000 meters
Relative Humidity: ≤ 50% at +40°C; up to 90% at +20°C. Protective measures should be taken at the equipment level for occasional condensation that may occur due to temperature changes. 6. Mechanical and Electrical Life
Mechanical life: ≥ 100,000 cycles
Electrical life: ≥ 30,000 cycles (at rated load)
Operating frequency: Recommended ≤ 120 cycles/hour
7. Application Scenarios
This switch is specifically designed for applications requiring direct and reliable on/off control of electrical circuits with specific current requirements.
Main power switch for equipment: Used as the main power input switch for industrial control cabinets, laboratory equipment, power distribution boxes, etc.
High-power load control: Directly controls the start and stop of single-phase motors, heaters, lighting circuits, and other loads with a rated current of up to 25A.
Power distribution and isolation: Serves as a manual isolation and switching point for branch circuits in power distribution systems.
Safety disconnect point for equipment maintenance: Provides a clear physical disconnect point for isolating power during equipment maintenance.