Impulse Relay FF Przekaźnik impulsowy I model BIS-403, single-channel switching relay

FF Impulse Relay I (model BIS-403) is a compact single-channel impulse switching relay designed to control lighting and other electrical circuits. It converts a momentary input pulse into a change of output state, allowing a single push-button or external control signal to toggle connected loads. The unit is intended for DIN-rail mounting or installation in distribution boards and retrofit situations where pulse-controlled switching simplifies wiring and user interaction.

Advantages

The device offers compact dimensions and single-channel operation that reduce space requirements and simplify integration into existing electrical installations. Its impulse toggle function eliminates the need for mechanical latching switches and enables centralized or remote control using momentary inputs. The relay is suitable for frequent switching cycles and is compatible with standard AC mains circuits, providing reliable operation for lighting and other resistive or inductive loads within its rated parameters.

Suitable for

• Control of domestic and commercial lighting from momentary switches
• Retrofit upgrades where push-button control replaces multi-wire switches
• Integration into automation panels for timed or remote toggling of circuits
• Centralized on/off control of circuits in corridors, staircases, or common areas

Key specifications

• Single-channel impulse (toggle) switching function
• Designed for mounting in distribution boards or on DIN-rail
• Compatible with standard AC mains voltage and common lighting loads
• Momentary input control (push-button or pulse signal) to change output state
• Compact form factor suitable for confined installation spaces

How to use

Install the impulse relay in a suitable electrical enclosure or on a DIN-rail according to local electrical codes. Connect the mains supply and the load terminals following the wiring diagram provided with the unit; connect the momentary input switch or pulse source to the designated control input. A brief press of the input will toggle the relay output between on and off states. Ensure power is isolated before wiring and verify correct polarity and connections prior to energizing the circuit.

Usage recommendations

Choose a control switch rated for momentary operation and position the relay inside an accessible distribution board. Verify load type and total current to ensure compatibility with the relay's switching capacity, and follow local safety regulations for installation and earthing. For automated systems, combine the impulse relay with timers or remote controllers that provide short control pulses rather than sustained signals.