Schneider Harmony RSB Interface Relays

Schneider Harmony RSB Interface Relays are compact electromechanical interface relays designed to provide reliable switching between control devices and field equipment in industrial automation systems. They are commonly used to interface PLC outputs, sensors, push buttons, timers, and control circuits with higher-power loads such as contactors, solenoid valves, and indicator devices.

The Harmony RSB series combines dependable switching performance with a compact plug-in design, making installation and replacement simple. Available in a range of coil voltages and contact configurations, these relays help simplify control panel wiring while providing electrical isolation between control and power circuits.

Many Harmony RSB models include an LED status indicator and a lockable test button, allowing technicians to test relay operation and identify switching status quickly during commissioning and maintenance. Compatible relay sockets and accessories further simplify installation in new panels as well as retrofit applications.

Specifications

• Product Name: Schneider Harmony RSB Interface Relays
• Product Family: Harmony Electromechanical Relays
• Relay Type: Interface Plug-in Relay
• Contact Configuration: 1 CO and 2 CO (model dependent)
• Current Rating: Up to 12 A (model dependent)
• Coil Voltage Options: Multiple AC and DC voltage versions
• Mounting: Plug-in mounting with Harmony relay sockets
• Status Indication: LED indication (selected models)
• Manual Operation: Lockable test button (selected models)
• Insulation: Electrical isolation between control and load circuits
• Accessories: Relay sockets, retaining clips, protection modules and marking labels
• Standards: IEC, CE, UL, CSA and RoHS compliant (model dependent)

Features

• Compact interface relay for industrial control applications
• Available in multiple AC and DC coil voltages
• One or two changeover contact options
• Reliable switching performance for control circuits
• LED operating indicator on selected models
• Lockable manual test button
• Plug-in construction for quick replacement
• Compatible with Harmony relay sockets
• Supports surge suppression and protection accessories
• Suitable for DIN rail and panel-mounted installations
• Long mechanical and electrical service life
• Simple maintenance and troubleshooting

Applications

• PLC interface panels
• Industrial automation systems
• Machine control panels
• Process automation
• Control and signalling circuits
• Motor starter circuits
• HVAC control systems
• Packaging and conveyor systems
• Water and wastewater treatment plants
• Building management systems
• OEM electrical control panels
• Factory automation equipment