FINDER 20.28.9.012.4000 Impulse Relay, 2 CO, 16 A, 12 V AC/DC Coil, DIN Rail, 2 Modules

The FINDER 20.28.9.012.4000 is a bistable impulse relay with two changeover contacts, rated for 16 A at 250 V AC. It operates from a 12 V AC/DC coil and mounts on a 35 mm DIN rail, occupying just two modules. This latching relay maintains its switched state without continuous coil power, making it suitable for lighting control and other applications where energy efficiency and quiet operation are priorities.

Highlights

• 2 CO (changeover) contacts, 16 A rated current
• 12 V AC/DC bistable coil
• DIN rail mounting, 2 modules wide (35 mm)
• Switching capacity up to 4000 VA (AC1)
• Operating temperature range -40°C to +70°C

In daily use

The relay's bistable operation means it only draws power during switching, reducing standby consumption. Its compact DIN rail housing simplifies installation in distribution boards. The silver nickel contacts ensure reliable switching for a long service life.

Full specifications

• Contact configuration: 2 CO (changeover)
• Contact material: AgNi (silver nickel)
• Rated current: 16 A
• Rated voltage: 250 V AC
• Coil voltage: 12 V AC/DC
• Switching capacity (AC1): 4000 VA
• Switching capacity (AC15): 750 VA
• Minimum switching load: 300 mW (12 V, 10 mA)
• Electrical life (at rated load): 100,000 cycles
• Mechanical life: 1,000,000 cycles
• Operating temperature: -40°C to +70°C
• Mounting: DIN rail (EN 60715)
• Protection degree: IP20 (terminals), IP40 (housing)
• Dielectric strength (coil-contacts): 4 kV AC
• Number of modules: 2

Final note

A reliable bistable relay for control circuits, offering high switching capacity in a compact DIN rail package.