ZHUCO SZW26-63/D202.2BF High Current IP65 Protection Transfer Switch

The SZW26-63 D202.2BF is an industrial-grade rotary changeover switch with a rated current of up to 63A. It features a three-position (1-0-2) two-position (two-section) design, integrated into a robust IP65-rated housing. Its core design is optimized for dual-path switching and safe isolation of high-current circuits. In position "1", the first set of dual contacts (1-2, 5-6) is connected; in position "2", the second set of dual contacts (3-4, 7-8) is connected; the intermediate position "0" provides complete disconnection of all contacts, forming a safe and visible electrical isolation point. This switch is suitable for AC 440V/50-60Hz circuits, with an insulation voltage of up to 690V. Internally, it uses large-section thickened copper conductors and high-capacity silver alloy contacts. The terminals are equipped with M6 screws, allowing connection of 6.0-16 mm² wires, meeting the reliable current-carrying requirements of 63A. Its sealed protective design effectively resists dust intrusion and low-pressure water spray from all directions, making it suitable for harsh industrial and outdoor environments. Mechanical life is no less than 100,000 cycles, and electrical life is no less than 30,000 cycles.

Main Technical Parameters

Rated Operating Current: 63A

Rated Operating Voltage: AC 440V (50/60Hz)

Rated Insulation Voltage: 690V

Structure: Two sections (two layers) with a total of 8 terminals, enabling switching between two loads/power supplies.

Logic: Position 1: 1-2, 5-6 on; Position 0: All off; Position 2: 3-4, 7-8 on.

Protection Rating: IP65 (dustproof, water-jet resistant).

Wiring Capacity: M6 screws, suitable for conductor cross-sections of 6.0 – 16 mm², tightening torque 2.5 N·m.

Life Indicators: Mechanical life ≥ 100,000 cycles; Electrical life ≥ 30,000 cycles (under rated load). Operating Environment: Suitable for industrial environments with temperatures ranging from -25°C to +40°C and altitudes ≤2000m.

Application Scenarios: This switch is specifically designed for industrial applications requiring manual switching and isolation of medium-to-high power (63A class) three-phase or single-phase circuits, where the installation environment carries risks of dust, moisture, or water splashes.

Outdoor/Harsh Environment High-Power Equipment Switching: Serves as a main/backup power switching switch or operating mode selection switch for outdoor water pumping stations, large fans, air conditioning units, electric gates, and outdoor lighting distribution systems. Its IP65 protection ensures reliable operation in rain and dusty environments.

Industrial Power Cabinet Safety Isolation and Load Switching: Used for load switching and maintenance isolation of 63A class power branch circuits in power control cabinets in factory workshops and power distribution rooms. For example, manually switching between two high-power motors (such as air compressors and circulating water pumps) in a "one-in-use, one-out-of-use" configuration.

Heavy Machinery Control: Integrated into the electrical control systems of construction machinery, port equipment, and agricultural machinery, it is used to select and control the power supply for different working mechanisms or high-power accessories. Its protection capabilities can withstand vibration, dust, and water splashes.

Critical Applications Requiring High-Reliability Wiring: Its M6 screws are compatible with large-section wires, meeting the high standards of electrical connection requirements for reliability and low contact resistance. Suitable for applications with stringent connection quality requirements.