F&F BIS-412M Bistable Relay 1P 16A 230V AC Group Control with Memory

The F&F BIS-412M is a high-quality 1-pole bistable relay engineered for efficient group control of lighting and electrical circuits. Operating at 230V AC with a 16A capacity, this device provides a reliable solution for managing electrical loads from multiple points using momentary push-buttons. Its integrated memory function is a critical feature, as it ensures the relay retains its last state even after a power supply interruption, automatically restoring the previous configuration once power is returned.

Advantages

The primary advantage of the BIS-412M is its ability to facilitate complex group control systems, allowing users to switch multiple circuits simultaneously or individually from various locations. The inclusion of a memory function eliminates the need for manual resetting after power outages, enhancing convenience and system reliability. Its robust design is specifically tailored for building automation, providing a durable and stable performance for long-term electrical installations.

Suitable for

• Lighting control in large rooms or hallways with multiple switches
• Building automation systems requiring group switching
• Managing electrical circuits from several remote locations
• Industrial or residential installations needing state retention after power loss

When it may not be suitable

This relay is not intended for use in circuits exceeding the 16A current rating or for applications requiring DC voltage control. It is also not suitable for environments where the installation space does not accommodate standard DIN rail mounting or where high-frequency switching exceeds the mechanical lifespan of the relay contacts.

Key specifications

• Contact configuration: 1-pole (1P)
• Rated current: 16A
• Supply voltage: 230V AC
• Function: Bistable with memory
• Control method: Momentary push-buttons

How to use

The relay is designed for installation on a standard DIN rail within an electrical distribution board. Wiring involves connecting the phase and neutral lines to the power terminals and linking the momentary push-buttons to the control input. Once installed, a short press on any connected push-button will toggle the relay state. The device will automatically store the current state in its internal memory, ensuring that the load remains in the same position if the power is cycled.

What to consider before purchase

• Ensure the total load of the connected circuits does not exceed 16A
• Verify that the control system uses momentary push-buttons rather than standard latching switches
• Confirm that the installation environment is compatible with DIN rail mounting
• Check that the supply voltage matches the 230V AC requirement

Usage recommendations

For optimal performance and safety, ensure that all electrical connections are tightened securely and that the installation is performed by a qualified electrician in accordance with local electrical codes. Avoid exceeding the maximum switching capacity to prevent premature contact wear.