ABB E291S-16-20/12 Impulse Switch 12 V AC 16 A 2NO 2TAZ313000R2052

In commercial and residential buildings, the ABB E291S-16-20/12 impulse switch provides reliable switching of lighting circuits from multiple control points. It is a 2NO latching relay with a 12 V AC coil, rated for 16 A at 250 V AC, and mounts on a standard DIN rail.

Key specifications

• Contact configuration: 2 normally open (2NO)
• Rated current: 16 A
• Control voltage: 12 V AC
• Rated operational voltage: 250 V AC
• Rated frequency: 50/60 Hz
• Mounting: DIN rail
• Number of modules: 1
• Degree of protection: IP40 (enclosure), IP20 (terminals)
• Electrical endurance: 150,000 cycles
• Mechanical endurance: 1,000,000 cycles
• Terminal type: screw terminals
• Wire size: 1.5–10 mm² (main circuit), 0.75–2.5 mm² (control circuit)
• Operating temperature: -25 to +55 °C

Why choose it

This impulse switch combines compact design with high switching capacity. Its latching mechanism consumes energy only during switching, reducing standby power. The screw terminals accept a wide range of wire sizes for flexible installation.

Ideal use cases

• Staircase lighting with multiple pushbuttons
• Corridor lighting in offices and hotels
• Switching of lighting circuits from several locations

Good to know

The device is designed for DIN rail mounting and occupies one module width. It is suitable for use in distribution boards and control panels. The coil operates on 12 V AC, so a suitable transformer or power supply is required.