Finder Bistable PCB Relay 1 Changeover 10 A 5 V DC Sensitive (40.31.7.005.0000)

In applications where power consumption must be minimized and state retention is critical, this bistable PCB relay offers a latching mechanism that maintains its contact position without continuous coil power. The Finder 40.31.7.005.0000 is a single changeover (SPDT) relay rated for 10 A at 250 V AC, with a sensitive 5 V DC coil that consumes only 200 mW. Its reinforced insulation and 6 kV impulse withstand voltage make it suitable for demanding industrial and building automation circuits.

Who is it for

Engineers and technicians designing energy-efficient control systems, PLC outputs, or battery-powered devices where a standard monostable relay would draw excessive current. It is also ideal for applications requiring a relay to retain its last state after power loss, such as lighting control, HVAC, or access systems.

Main features

• Bistable (latching) operation: coil energized only during switching, reducing heat and energy use.
• 1 changeover contact (SPDT) with AgNi contact material, rated 10 A / 250 V AC.
• Sensitive 5 V DC coil with 200 mW power consumption.
• Reinforced insulation with 6 kV impulse withstand voltage (1.2/50 µs) between coil and contacts.
• Wide operating temperature range: -40 °C to +85 °C.
• PCB mount with 5 pins, compact footprint.
• Approvals: VDE, UL, CSA, RINA, GOST, IMQ, CQC.

Specifications

• Relay type: Bistable PCB relay
• Contact configuration: 1 CO (SPDT)
• Rated contact current: 10 A
• Rated contact voltage: 250 V AC
• Contact material: AgNi
• Coil voltage: 5 V DC
• Coil power consumption: 200 mW
• Dielectric strength (coil-contact): 6 kV (1.2/50 µs)
• Dielectric strength (open contacts): 1000 V AC
• Operating temperature: -40 to +85 °C
• Mounting: PCB
• Number of pins: 5
• Insulation: Reinforced

Tips

When driving this relay, use a pulse of at least 10 ms to ensure reliable latching. For inductive loads, consider a snubber circuit across the contacts to extend contact life. Ensure adequate PCB trace width for the 10 A current path to avoid excessive heating.