Why Choose the ABB RBR121-115VUC Interface Relay?
The ABB RBR121-115VUC, order code 1SNA645503R0700, is a compact R600 boxed interface relay designed for electrical isolation, signal amplification and signal matching between industrial control equipment and field-level devices. As part of the ABB R600 interface relay range, it provides dependable switching in a slim DIN rail format for PLC systems, machinery and industrial automation panels.
This interface relay operates from a 115 V AC/DC rated control supply and provides a single changeover (1 c/o / SPDT) output contact. The RBR121-115VUC uses spring terminals for fast and secure conductor connections and incorporates an LED to provide clear visual indication of relay status.
With a compact 6 mm width and a switching current range of 10 mA–6 A, the RBR121-115VUC combines useful switching capability with efficient use of control-panel space. Its output is suitable for switching loads at up to 250 V AC, while its snap-on DIN rail format simplifies installation in industrial control cabinets.
Key Advantages
- Compact R600 interface relay designed for industrial automation.
- 115 V AC/DC control supply suitable for compatible AC and DC control circuits.
- 1 c/o (SPDT) output contact for flexible switching applications.
- Wide 10 mA–6 A switching current range.
- Switching capability up to 250 V AC.
- Spring terminals enable fast and secure control-panel wiring.
- Built-in LED indication provides convenient visual relay status.
- Compact 6 mm housing helps maximise available DIN rail space.
Key Features
- ABB R600 boxed interface relay range.
- 115 V AC/DC rated control supply voltage.
- 1 c/o (SPDT) output contact.
- 10 mA–6 A output switching current.
- Output switching voltage up to 250 V AC.
- Spring terminal connection technology.
- Integrated LED relay status indication.
- Compact 6 mm width for high-density installations.
- Snap-on DIN rail mounting.
- Designed for isolation and interfacing between control systems and field devices.
Reliable Interface Switching for Industrial Automation
Interface relays such as the ABB RBR121-115VUC provide an electrical interface between electronic control equipment and loads within industrial systems. They are used to isolate control circuits, amplify switching signals and provide signal matching between PLCs, controllers and field-level equipment.
The ABB R600 range is designed for compact industrial control installations where reliable switching and efficient use of DIN rail space are important. The RBR121-115VUC combines a narrow housing, spring-terminal connections, LED indication and a versatile changeover contact, making it suitable for machine building, process control and general industrial automation.
Typical Applications
- PLC input and output interfacing.
- Industrial control and automation panels.
- Electrical isolation between control and field circuits.
- Signal amplification and signal matching.
- Sensor and actuator interfacing.
- Machine control systems.
- Process automation equipment.
- High-density DIN rail control cabinets.
