Rotary Changeover Switch 20A 440V – CCC Certified Selector
Rotary Changeover Switch 20A 440V – CCC Certified Selector
Rotary Changeover Switch – 20A AC 440V | CCC, CE & RoHS Certified
Take precise control of your electrical circuits with this heavy-duty Rotary Selector Changeover Switch (Model SZW26-20/0-2.1). Engineered for industrial and commercial applications, this panel-mount switch delivers reliable three-position circuit switching — 0 (stop), position 1, and position 2 — making it ideal for motor starters, control panels, HVAC systems, and other demanding electrical installations.
Made in Mainland China.
Key Features
- Three-Position Control: Clearly defined 0-stop, 1, and 2 gear positions for accurate and repeatable circuit switching.
- Heavy-Duty Construction: Thickened copper components paired with silver alloy contacts ensure long service life and stable electrical conductivity.
- Wide Voltage Compatibility: Supports AC circuits (50–60 Hz) up to 440V and DC circuits up to 240V — suitable for a broad range of installations.
- Compact Panel Mount: Fits standard 64×64 mm panel cutouts for flexible, space-saving installation.
- Triple Safety Certification: Compliant with CCC, CE, and RoHS standards for dependable, regulation-ready electrical performance.
- Flame-Retardant Housing: Outer casing made from flame-retardant plastic for added safety in demanding environments.
Technical Specifications
| Model | SZW26-20/0-2.1 |
| Rated Working Voltage | AC 440V / DC 240V / DC 120V |
| Rated Insulation Voltage | 660/690V |
| Rated Impulse Withstand Voltage | 4 kV |
| Conventional Heating Current | 20A |
| Rated Working Current | AC-23A: 15A | AC-3: 11A | AC-4: 3.5A | DC-21A: 0.4A, 1A |
| Rated Short-Time Withstand Current | 180A / 1s |
| Rated Short-Circuit Making Capacity | 254A |
| Use Category | AC-23A, AC-3, AC-4, DC-21A |
| Panel Size | 64 × 64 mm |
| Tier Terminals | 1 |
| Material | Copper, Silver Alloy, Flame-Retardant Plastic |
Package Contents
- 1 × Rotary Changeover Switch (SZW26-20/0-2.1)
Important Notes
- Actual color may vary slightly from images due to monitor calibration and lighting conditions.
- Please allow for slight measurement tolerances in the listed dimensions.
- Installation should be performed by a qualified electrician in accordance with local electrical codes.
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Frequently Asked Questions
Q: What is a rotary changeover switch used for?
A: A rotary changeover switch is used to select between different electrical circuits or power sources in a controlled and safe manner. This 20A 440V model is commonly used in industrial control panels, motor starters, HVAC systems, and machinery to switch between operating modes (e.g., off, source 1, source 2).
Q: Is this rotary selector switch suitable for both AC and DC circuits?
A: Yes. The SZW26-20/0-2.1 changeover switch supports AC circuits up to 440V (50–60 Hz) and DC circuits up to 240V, making it highly versatile for a wide range of electrical control applications.
Q: What certifications does this changeover switch carry?
A: This rotary changeover switch is certified to CCC (China Compulsory Certificate), CE, and RoHS standards, ensuring it meets rigorous safety and environmental compliance requirements for use in professional electrical installations.
Q: What panel cutout size is required for installation?
A: The switch is designed for a standard 64×64 mm panel cutout, making it compatible with most industrial and commercial electrical enclosures and control panels.