In modern power systems, the reliability of power sources is paramount, whether for commercial operations or critical infrastructure. When the primary power supply fails, the swift and secure transition to a backup power source is essential for maintaining system continuity.

We introduce the WDB-MCS series of plug-and-play waterproof modular changeover switch — an efficient solution that facilitates seamless switching between primary and backup power supplies, while offering simplified wiring and quick-connect plug features that set it apart from competitors.

Working Principle:

Its principal functions include manual switching between two circuits, featuring a central off position to ensure secure disconnection of power, thereby guaranteeing uninterrupted supply to critical loads.

• Achieved through the mechanical movement of the operating handle, the user can switch the handle to the ‘I’ (main power supply), “Off” (disconnected), or ‘II’ (auxiliary power supply) positions.

• The switch incorporates multiple contact assemblies connecting different circuits. When the handle is moved, the contacts switch between various terminals, thereby altering the power supply connected to the load.

• It ensures that only one power source is connected at any given time, thereby preventing the risk of backflow or short circuits.

• Designed for both indoor and outdoor environments, featuring an IP65-rated waterproof enclosure with a rated current up to 63A. Available in multi-pole configurations (2-pole or 4-pole) to accommodate single-phase or three-phase systems.

About ONESTO WDB6-MCS632/WDB9-MCS634:

• Modular design(MCS) for DIN rail mounting.

• Two-way switching circuits with center-off.

• Visible contact status through marking on handle.

• Two versions for single or three phase installation.

• IP65 distribution board for dust and water protection.

• With 63A quick-connect plugs.

Why choose our product? — Say goodbye to cumbersome wiring and embrace plug-and-play convenience!

⚡️ Pre-Wired Design: Unlike conventional changeover switches that require electricians to connect multiple internal circuits on-site, our product features intricate pre-wiring within the enclosure during the manufacturing process. This means there's no need for users to manage internal wiring, significantly cutting installation time and minimizing the risk of human error.

Equipped with Quick Connect Plugs: Our products are factory-fitted with quick connect plugs for your convenience. Just connect the main power supply, backup power supply, and load cables to the provided quick-connect ports, then simply plug the two connectors together for effortless operation.

Choosing the WDB-MCS series modular transfer switch means choosing a power switching solution that combines safety, reliability, and durability, while enjoying unparalleled ease of installation. It simplifies the complex installation process into a simple "plug and play," making it ideal for implementing a reliable backup power strategy.

Key Application Scenarios：

Data Centres: Ensuring the continuous operation of servers and network equipment.

Hospitals and Medical Facilities: Guaranteeing uninterrupted power supply to life support systems and critical medical equipment.

Industrial Production Lines: Preventing production interruptions and losses caused by power outages.

Telecommunications Facilities: Maintaining the normal operation of communication base stations and network equipment.

Commercial Buildings: Providing backup power for emergency lighting, fire pumps, and security systems.

For more information, please contact us！