Core Features
Heavy-Duty Rocker Design for Industrial Power Control: Functions as a robust panel-mount rocker switch engineered to handle moderate power loads, featuring a 22mm × 15mm actuator and durable thermoplastic housing. This design balances ruggedness with ease of use, making it ideal for controlling motors, heaters, or machinery in factory floors, commercial equipment, and industrial enclosures.
Single-Pole Double-Throw (SPDT) Configuration: Equipped with a reliable SPDT contact system (1 NO + 1 NC) rated for AC 250V (10A resistive) and DC 30V (5A resistive), supporting versatile applications from power switching to mode selection. The silver-nickel alloy contacts ensure low resistance and excellent arc suppression, extending service life to 50,000+ mechanical operations.
Secure Panel Installation: Designed for front-panel mounting with a 21mm × 13mm cutout, secured by a hex nut (included) that resists loosening under vibration. The switch’s silicone rubber gasket provides IP44 protection (IEC 60529) against dust and splashing water, suitable for indoor industrial environments and damp locations.
Ergonomic Actuation with Clear Indication: The large rocker actuator (22mm × 15mm) offers a positive, tactile feel with a 3mm travel and 5N operating force, ensuring easy operation even with gloves. Optional versions include integrated LED illumination (red/green/blue) for visual status indication in low-light environments.
Wide Temperature Tolerance: Operates reliably across -30°C to +80°C, making it suitable for temperature-fluctuating environments such as industrial ovens, outdoor control cabinets, or vehicle workshops.
Versatile Terminal Options: Available with either screw terminals (accepting 16–22 AWG wires) or quick-connect tabs (6.3mm), enabling flexible integration into both permanent wiring and temporary setups.
Typical Applications
The ALCO Switch SW-251 is engineered for heavy-duty power control in industrial and commercial systems, with core use cases including:
Industrial Machinery: Installed in conveyor systems, pumps, or packaging machines to control main power or toggle between operating modes (e.g., manual/automatic).
Commercial Appliances: Used in catering equipment, industrial ovens, or HVAC units as a main power switch, with its high current rating handling heating elements or motors.
Electrical Enclosures: Integrated into distribution panels or control boxes to isolate circuits during maintenance, with IP44 protection safeguarding against dust and accidental spills.
Vehicle Workshops: Deployed in automotive lifts, welding machines, or power tools to control operation, with rugged design withstands workshop vibrations.
Stage & Lighting Systems: Used in entertainment venues to control lighting banks or audio equipment, with optional LED indicators showing active circuits.