Latching relays R2B, R3B, and R4B

The R2B, R3B, and R4B series by Relpol are relays designed with energy efficiency and reliability in mind.

Thanks to their ability to maintain state without continuous power supply, they find wide applications in industrial and building automation.

Energy Efficiency: Relpol latching relays require only a pulse to change state, which allows for significant energy savings compared to traditional relays.
Two Stable States: With two stable states (open/closed), these relays are ideal for applications that require maintaining a specific state for a long period.
Robust Construction: High-quality manufacturing and the use of durable materials, such as AgNi, ensure long lifespan and reliability of the relays.
Variety of Models: Relpol offers latching relays with different numbers of contacts, allowing the devices to be tailored to specific application needs.

Energy saving: R.N series latching relays have significantly lower energy consumption thanks to a mechanism that holds the contacts in a fixed position without the need for continuous power supply. Electricity is only consumed at the moment of switching the device's state (e.g. from ON to OFF or vice versa)
Two steady states: After a power failure, Relpol bistable relays maintain the last contact position and resume operation in the same switching position when power is switched on again
Robust Design: High-quality workmanship and the use of durable materials, such as AgNi, ensure long life and reliability of the relays.
Variety of Models: Relpol offers single- and double-coil bistable relays with different numbers of contacts, allowing the devices to be adapted to specific application needs.

The R2B-...-B and R2B-...-D are energy-efficient single-coil and dual-coil latching relays designed for mounting on a 35 mm DIN rail or a panel.

Technical data
Number and Type of Contacts: 2 CO Contact Material: AgNi Rated Contact Voltage AC: 250 V / 440 V Rated Load Current: 12 A / 250 V AC, 12 A / 24 V DC Mechanical Durability: > 2 x 10^7 cycles DC Power Consumption: 1 W Dimensions: 28.6 x 21 x 35.5 mm Operating Temperature: -20...+55°C

R3B-...-B i R3B-...-D

The R3B-...-B and R3B-...-D models are single-coil and dual-coil latching relays with high mechanical and electrical durability.

Technical data
	Number and Type of Contacts: 3 CO Contact Material: AgNi, AgNi/Au (gold flash or hard gold plating) Rated Load Current: 8 A / 250 V AC, 8 A / 24 V DC _(R3B-...-B) , 6 A / 250 V AC, 6 A / 24 V DC _(R3B-...-D) Mechanical Durability: > 2 x 10⁷ cykli DC Power Consumption 1 W _(R3B-...-B) , ≤ 3 W _(R3B-...-D) Dimensions 28,6 x 21 x 35,5 mm Operating Temperature: -20...+55°C

The R4B-...-B is a latching relay with four contacts, ideal for industrial applications requiring a higher number of connections.

Technical data
Number and Type of Contacts: 4 CO (changeover) Contact Material: AgNi, AgNi/Au (gold flash or hard gold plating) Rated Contact Voltage AC: 250 V / 250 V Rated Load Current: 6 A / 250 V AC, 6 A / 24 V DC Mechanical Durability: > 2 x 10⁷ cycles DC Power Consumption: 1 W Dimensions: 28.6 x 21 x 35.5 mm Operating Temperature: -20...+55°C