The 20 Series are available as DPST-NO or SPST-NO + SPST-NC step relays. On, each successive energisation of the relay coil the contacts change state thus providing a step or "flip flop" sequence of operation. With the advantage of an override test button, it allows manual advancement of the step sequence and individual mechanical flags provides visual indication of contact status. Typical applications include the control of lighting where push on push off or sequential operation is required, automatic opening/closing of doors, gates, and so on. Use in portable or battery powered equipment requiring contact status to be maintained without continuous supply to the coil and functions where manual override operation is desired

17.5 mm wide (EN 50022) 35mm DIN Rail mount housing
Manual test button and mechanical indicators
Minimum impulse duration: 0.1 Sec
Maximum impulse duration: 1 hour
Insulation between coil and contacts (1.2/50μ); 4 kV
Nominal lamp rating: incandescent (230 V ac); 2000 W
Compensated fluorescent (230 V ac); 750 W
Temperature range: -40 to +40°C
Protection category: IP20

UL recognised components for Canada & US; LROS

This modular step relay is designed to improve automation solutions across various applications, particularly in the control of lighting and other electrical devices. It is an effective component for systems that require precise control and dependable operation under different conditions. The relay's robust design ensures effective performance in environments ranging from -40°C to +40°C, making it suitable for both domestic and industrial use.

• Operates at 24 V AC for diverse control applications
• DPST configuration for flexible switching capabilities
• Includes screw terminals for secure connections
• Latching mechanism enables energy-efficient operation
• Utilises silver alloy contacts for enhanced conductivity
• Supports a maximum switching voltage of 250 V AC

• Ideal for automating blinds, grilles, and shutters
• Effective for lighting control in hotels, offices, and hospitals
• Suitable for bedroom and living room lighting systems
• Can connect illuminated push-buttons with additional modules

Ensure sufficient ventilation around the relay if installed in a confined area to prevent overheating.

Yes, it is adaptable to various coil voltages as specified in the technical data.

Use the built-in test button for easy verification of proper functionality.

It can connect up to 15 illuminated push-buttons when used with the appropriate module.

The 4 kV isolation rating enhances safety by preventing electrical interference between the coil and contacts.