Key Switch 3A with Brass Cylinder for Tubular & Roller Shutter Motors
Product Overview
Physical lock control structure. Comes standard with 3 keys. The die-cast aluminum alloy casing and panel ensure impact resistance and corrosion resistance in industrial environments; the all-copper lock cylinder provides excellent durability and rust resistance for long-lasting use. The wide voltage design of 125V/240V allows it to flexibly adapt to different regional power grid standards and easily match various single-phase equipment such as tubular motors and roller shutter motors. The design includes a grounding point, complying with safety regulations and effectively preventing leakage risks. Installation is simple and plug-and-play.
Key attributes
Dimensions: L74 x W74 x H46 mm (L7.4W7.4H4.6cm)
Combinations: 1-1000 combinations available
Rated Load: Maximum operating current: 16A
Insulation Resistance: 100 MΩ Min
Dielectric Strength: 1500 VAC (50-60HZ)
Materials: Aluminum alloy material, Brass cylinder, Metal keys, Aluminum oxide plate, Silver plated contacts and terminals
Additional Details: Terminals and Grounding
FAQs
What is the Key Switch 3A used for?
The Key Switch 3A is designed for secure manual control of tubular motors, roller shutter motors, and other single-phase electrical equipment. It provides authorized operation control in industrial, commercial, and building automation applications.
What voltage and current ratings does this key switch support?
This model supports a wide voltage range of 125V / 240V and a maximum operating current of 16A, making it suitable for different regional power grid standards and high-load motor control applications.
What materials are used in the Key Switch 3A?
The switch features a die-cast aluminum alloy housing, a brass lock cylinder for durability and corrosion resistance, an aluminum oxide front plate, metal keys, and silver-plated contacts and terminals to ensure stable electrical performance.
How secure is the lock mechanism?
The Key Switch 3A uses a brass cylinder with up to 1–1000 key combinations, providing reliable access control and reducing the risk of unauthorized operation. It comes standard with three metal keys.
What are the insulation and safety specifications?
The switch offers an insulation resistance of ≥100 MΩ and a dielectric strength of 1500 VAC (50–60Hz). It also includes grounding terminals, complying with safety regulations and helping prevent electrical leakage risks.
What are the dimensions of the Key Switch 3A?
The compact dimensions are L74 × W74 × H46 mm (7.4 × 7.4 × 4.6 cm), allowing easy installation in control panels, wall-mounted boxes, or industrial enclosures.
Is the Key Switch 3A easy to install?
Yes. The switch is designed for simple, plug-and-play installation, with clearly marked terminals and grounding points, making it suitable for both new installations and retrofit projects.
What environments is this key switch suitable for?
Thanks to its impact-resistant and corrosion-resistant aluminum alloy casing, the Key Switch 3A performs reliably in industrial, commercial, and outdoor-protected environments.







