The Bistable Rail Switch BI220-20/230V is an electromagnetic switching device for mounting on DIN rail panels. It handles universal switching of AC motors, electric heating devices, lighting circuits, and electronic equipment in offices, shops, hospitals, sports facilities, production halls, and public spaces. The bistable (latching) design holds its contact state without continuous coil energisation, producing 0 dB noise when the coil voltage is switched off.

With a mechanical endurance of 1,000,000 operating cycles and electrical endurance of 100,000 cycles at AC-1/AC-7a/AC-21, it is built for long service life in demanding commercial and industrial installations. Compliant with IEC/EN 60669-2-2, with CE and CB approvals.

Key Features

• 2-pole bistable (latching) contactor — holds state without continuous energisation
• Coil voltage: 230V AC
• Thermal current Ith: 20A; rated operational current Ie (AC-1, AC-7a, AC-21): 20A
• Operational power Pe (AC-1, AC-7a, AC-21, single phase 230V): 4.4 kW
• Compact DIN rail dimensions: 17.6mm wide × 90mm tall × 60mm deep
• Silent operation: 0 dB noise when coil is de-energised

Product Benefits

• Bistable design eliminates continuous coil power draw — reduces standby energy consumption
• 0 dB noise in latched position makes it suitable for noise-sensitive environments such as hospitals and offices
• Mechanical endurance of 1,000,000 cycles ensures long service life in high-frequency switching applications
• Rated for motors, heating, lighting, and electronics in one device — simplifies panel design
• Compact 17.6mm width saves space on crowded DIN rails

Technical Specifications

• Model: BI220-20/230V (MPN: BI220-20/230V)
• Number of Poles: 2
• Coil Voltage: 230V AC
• Coil Type: AC
• Thermal Current Ith: 20A
• Rated Operational Current Ie (AC-1, AC-7a, AC-21): 20A
• Operational Power Pe (AC-1, AC-7a, AC-21, single phase 230V): 4.4 kW
• Mechanical Endurance: 1,000,000 operating cycles
• Electrical Endurance (AC-1, AC-7a, AC-21): 100,000 operating cycles
• Noise Level: 0 dB (coil voltage switched off)
• Width: 17.6mm
• Height: 90mm
• Depth: 60mm
• Standard: IEC/EN 60669-2-2
• Approvals: CE, CB

Why You'll Love It

• CE and CB approved — ready for installation in European and international projects without additional certification
• Bistable latching eliminates humming and saves coil energy compared to standard contactors
• 1,000,000-cycle mechanical endurance means the switch outlasts most panel service intervals
• Package includes 1× Bistable Rail Switch BI220-20/230V