1SNA645004R0400 ABB RB121-230VUC R600 Interface Relay 230 V AC/DC

Why Choose the ABB RB121-230VUC Interface Relay?

The ABB RB121-230VUC is a compact and reliable interface relay designed for electrical isolation, signal matching and switching applications in industrial control and automation systems. As part of the ABB R600 interface relay series, it provides a space-saving solution for interfacing control circuits with higher-current loads.

This relay combines a slim 6 mm housing with screw terminal connections and an integrated LED for clear visual indication of relay energisation. Its boxed construction provides high resistance to vibration, while the DIN rail mounting format allows straightforward installation within control panels and electrical distribution equipment.

With a 230 V AC/DC control supply and a 1 c/o (SPDT) output contact rated for switching loads from 10 mA up to 6 A, the RB121-230VUC is suitable for a wide range of industrial automation, control and interface applications.

Key Advantages

• Compact R600 interface relay for industrial control applications.
• 230 V AC/DC control supply for high-voltage control circuits.
• 1 c/o (SPDT) output contact provides flexible switching capability.
• 10 mA to 6 A switching range for a broad range of interface applications.
• Integrated LED status indication provides clear visual confirmation of relay energisation.
• Slim 6 mm housing helps maximise control panel space.

Key Features

• ABB R600 interface relay series.
• RB121-230VUC relay type.
• 230 V AC/DC rated control supply.
• 1 c/o (SPDT) output contact.
• 10 mA to 6 A output switching range.
• Output voltage capability up to 250 V AC.
• Integrated LED indication.
• Screw terminal connections for secure wiring.
• DIN rail mounting for straightforward control panel installation.
• Silver-tin-oxide AgSnO2 contact material.
• Flame-retardant UL 94-V0 device housing.

Reliable Interface Switching for Industrial Automation

Interface relays such as the ABB RB121-230VUC provide electrical isolation and signal interfacing between control equipment and field devices. By using a relay contact between the control circuit and switched load, the relay can help separate control signals from the circuit being operated while providing flexible switching functionality.

The ABB R600 series is designed for compact installation in industrial control panels and automation systems. The RB121-230VUC combines a 230 V AC/DC control input with a single changeover contact, screw terminals and integrated LED indication, making it suitable for signal matching and switching applications where panel space is limited.

Typical Applications

• Industrial automation and control panels.
• PLC and controller interface circuits.
• Electrical signal isolation and matching.
• Machine control systems.
• Industrial switching and monitoring circuits.
• Motor control and equipment interface applications.
• DIN rail mounted control cabinets and distribution equipment.