F&F BIS-409 Bistable Relay 2Z 8A 230V AC

The F&F BIS-409 is a high-quality bistable relay engineered for the efficient control of lighting and electrical circuits through impulse signals. Operating on a 230V AC power supply, this device utilizes two normally open (2Z) contacts with an 8A capacity, providing a robust solution for managing electrical loads. By allowing users to toggle circuits from multiple locations using simple momentary push-buttons, it simplifies complex wiring requirements in both residential and commercial environments.

Advantages

The primary benefit of the F&F BIS-409 is its ability to facilitate multi-point control, which significantly enhances convenience in hallways, staircases, and large rooms. Its bistable design ensures that the relay maintains its state even after the control pulse is removed, contributing to energy efficiency and operational reliability. The compact construction allows for easy installation in standard electrical enclosures, while the dual-contact configuration provides flexibility for managing two independent circuits or higher load requirements simultaneously.

Suitable for

• Lighting control in staircases and corridors
• Multi-point switching of electrical appliances
• Residential home automation systems
• Commercial building lighting management

When it may not be suitable

This relay is not intended for use with DC power supplies or low-voltage control circuits, as it is specifically designed for 230V AC operation. It is also not suitable for applications requiring dimming functionality or complex timing sequences beyond simple on-off switching.

Key specifications

• Supply voltage: 230V AC
• Contact configuration: 2 x normally open (2Z)
• Maximum current capacity: 8A
• Control method: Impulse-based via momentary push-buttons

How to use

Installation should be performed by a qualified professional in accordance with local electrical regulations. The relay is typically mounted on a standard DIN rail within a distribution board. Connect the phase and neutral wires to the supply terminals and wire the momentary push-buttons in parallel to the control input. Once installed, a single press of any connected push-button will toggle the state of the relay contacts, turning the connected load on or off.

What to consider before purchase

• Ensure the total load of the connected devices does not exceed the 8A limit per contact.
• Verify that your existing wiring supports the use of momentary push-buttons.
• Confirm that the installation space is compatible with standard DIN rail mounting.

Usage recommendations

For optimal performance and longevity, ensure that the relay is protected by an appropriate circuit breaker and avoid exceeding the rated current capacity to prevent contact wear.