Industrial bistable single-coil relay 2P AgNi 12 V DC IP40 R2B-2012-23-B012-W A00073

Bistable relays – reliable switching in automation

A bistable relay with a single coil is a solid solution for applications requiring maintaining the switching state without continuous power consumption. The R2B-2012-23-B012-W model from RELPOL, designed for mounting in plug-in sockets, finds application in a wide range of devices and industrial automation systems. Its construction based on contacts made of silver-nickel alloy (AgNi) ensures high reliability and durability, even with frequent switching cycles.

This 2-pole relay (2P) is particularly useful where minimizing energy consumption and ensuring stable circuit operation are important. A mechanical indicator facilitates visual control of the relay status, which is helpful during diagnostics and maintenance. The housing with an IP40 protection degree protects against the ingress of solid objects larger than 1mm, making it suitable for operation in industrial environments with a moderate level of dust.

Construction and application

This relay has been designed for easy mounting in standard plug-in sockets, which speeds up the installation and replacement process. The bistable characteristic means that changing the state requires a short voltage pulse – after the voltage is switched off, the relay maintains its state. This solution is ideal for applications where it is necessary to remember the relay position without continuous coil power. It is used, among others, in lighting control systems, heating devices or alarm systems. The AgNi contact material guarantees good electrical conductivity and spark resistance, which increases safety of use.

Advantages and benefits

• Low power consumption: thanks to the bistable construction, after switching, the relay does not require continuous coil power, which translates into energy savings.
• High reliability: the AgNi contact material ensures long life and resistance to mechanical wear and corrosion.
• Easy installation: designed for plug-in sockets simplifies installation and device replacement.
• Visual status control: the mechanical indicator allows for quick identification of the current relay status without the need for electrical measurements.
• Protection against contamination: the IP40 housing protects against the ingress of solid objects larger than 1mm, which increases the durability of the device in industrial environments.
• Two-pole contact arrangement (2P): allows controlling two independent circuits or one circuit with higher power.