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.

Building Automation: Control of lighting, blinds, HVAC systems (heating, ventilation, air conditioning).
Industrial Automation: Control of machines and production equipment where operational state memory is required.
Security Systems: In alarm and fire systems, where maintaining a specific state after an alarm activation is necessary.
Telecommunications and IT: Applications in network switches and telecommunication devices where reliability and energy efficiency are crucial.

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