ZHUCO SZW26-20/D505.5CF multi-circuit IP65 protected changeover switch

The SZW26-20/D505.5CF is a three-position (1-0-2) rotary changeover switch with an IP65 high protection rating and a unique five-section (five-layer) contact structure at its core. This structure allows for simultaneous and precise switching of five independent circuits via a single handle, enabling centralized selection and safe isolation of two complex operating states. The switch has a rated current of 20A and is suitable for AC 440V/50-60Hz circuits, with an insulation voltage up to 690V.

In position "1", the switch connects the first group of five contacts (1-2, 5-6, 9-10, 13-14, 17-18); in position "2", it connects the second group of five contacts (3-4, 7-8, 11-12, 15-16, 19-20); the middle "0" position ensures all contacts are completely disconnected, providing a crucial safety isolation point. The product features a flame-retardant and high-temperature resistant shell, with thickened copper conductors and silver alloy contacts inside, ensuring long-term reliable conductivity at 20A current. Its IP65 sealed protective shell can withstand complete immersion and low-pressure water spray from any direction. Mechanical life is no less than 100,000 cycles, and electrical life is no less than 30,000 cycles.

Main Technical Parameters

Electrical Specifications: Rated operating current 20A; Rated operating voltage AC 440V (50/60Hz); Rated insulation voltage 690V.

Contact Configuration: Five-section (layer) structure, 20 terminals in total. Five independent double-throw circuits can be switched simultaneously.

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

Wiring Specifications: M3 terminal screws, suitable for wire cross-sections of 1.0 – 2.5 mm², tightening torque 0.6 N·m.

Life Indicators: Mechanical life ≥ 100,000 cycles; Electrical life ≥ 30,000 cycles (under rated load). Operating environment: -25°C to +40°C, altitude ≤2000m, industrial and outdoor environments.

Application Scenarios: This switch is designed for complex systems requiring centralized and reliable manual switching of multiple (up to five) low-voltage control signals, sensor power supplies, or indicator circuits in harsh environments such as humid, dusty, or outdoor conditions.

Multi-functional integrated control for complex equipment: Suitable for control panels in small automated production lines, test benches, and experimental devices. A single switch allows for switching between "Mode A/Stop/Mode B" and simultaneously changes up to five related control logics, status indicators, auxiliary power supplies, or signal paths, greatly simplifying panel layout and operation.

Instrumentation and signal systems in outdoor/harsh environments: Serves as a multi-functional selector switch for outdoor weather stations, environmental monitoring equipment, and marine navigation instrument panels. Used to switch between different sensor signal sources, display parameters, or communication interfaces, its IP65 protection ensures stable operation in rain, high humidity, and salt spray environments.

Safety and mode selection of industrial control cabinets: In industries with cleaning requirements such as food processing and pharmaceuticals, these cabinets are used to control equipment and enable multiple states such as "automatic/isolation/cleaning" or "remote/stop/local" to be selected, while simultaneously controlling multiple signals such as master commands, interlocks, and alarms.