F&F BIS-413 Impulse Relay 24V AC/DC 16A for TH35 Rail

The F&F BIS-413 is a bistable impulse relay engineered for reliable control of lighting and electrical devices in residential and commercial environments. Operating on a 24V AC/DC supply, this device enables the switching of circuits with a load capacity of up to 16A. Designed for seamless integration into electrical distribution boards, it mounts directly onto a standard TH35 DIN rail, ensuring a clean and professional installation.

Advantages

This impulse relay offers a highly efficient solution for managing lighting systems from multiple locations. By utilizing momentary push-buttons, users can easily toggle circuits on and off without the need for complex cross-switching wiring. The bistable mechanism ensures that the relay maintains its state even after the control signal is removed, which contributes to energy efficiency and operational stability. Its compact design and compatibility with standard rail systems make it an ideal choice for both new electrical projects and the modernization of existing installations.

Suitable for

• Controlling lighting in hallways, staircases, and large rooms from multiple push-button locations.
• Managing electrical appliances that require remote or multi-point switching.
• Integration into smart home or building automation systems operating on 24V control voltage.

When it may not be suitable

This relay is not intended for use with high-voltage control circuits exceeding the specified 24V AC/DC rating. It is also not suitable for applications requiring dimming functionality or complex programmable logic, as it operates strictly as a binary on-off switching device.

Key specifications

• Supply voltage: 24V AC/DC
• Maximum switching current: 16A
• Mounting type: TH35 DIN rail
• Control type: Momentary push-buttons
• Operating mode: Bistable (impulse)

How to use

The F&F BIS-413 should be installed by a qualified electrician within a distribution board on a TH35 rail. Connect the 24V power supply to the designated terminals and wire the momentary push-buttons in parallel to the control input. Ensure that the load circuit is connected to the relay's output terminals according to the wiring diagram provided with the device. Once installed, a single press of any connected push-button will toggle the relay state, switching the connected load on or off.

What to consider before purchase

• Verify that your control circuit voltage matches the 24V AC/DC requirement.
• Ensure the total load of the connected devices does not exceed the 16A limit.
• Confirm that you have sufficient space on your DIN rail for the device.

Usage recommendations: For optimal performance and safety, always ensure that all electrical connections are tightened securely and that the circuit is protected by an appropriate miniature circuit breaker.