Why Choose the ABB RB121R-115VUC Interface Relay?
The ABB RB121R-115VUC, order code 1SNA645046R0700, is a compact and reliable R600 series interface relay designed for electrical isolation, signal matching and switching in industrial control and automation systems. Featuring a 115 V AC/DC control supply and a single changeover contact, it provides an effective interface between control equipment and switched electrical loads.
As part of the ABB R600 boxed interface relay range, the RB121R-115VUC features screw-terminal connections and can be snap-mounted onto a DIN rail for straightforward control-panel installation. The relay incorporates an LED for visual indication of coil energisation together with integrated leakage current protection, making it particularly useful in industrial control circuits where dependable switching and clear operating-state indication are required.
The RB121R-115VUC provides 1 c/o (SPDT) contact with a switching range of 10 mA–6 A and operates from a 115 V AC/DC rated control supply. Its robust boxed construction, silver-tin-oxide contacts and DIN-rail mounting make it suitable for PLC interfacing, machinery, process control and general industrial automation applications.
Key Advantages
- Reliable ABB R600 interface relay for industrial control and automation applications.
- 115 V AC/DC rated control supply provides compatibility with AC and DC control circuits.
- 1 c/o (SPDT) output contact provides flexible changeover switching.
- 10 mA–6 A switching range suitable for a variety of industrial control loads.
- Integrated leakage current protection for demanding control applications.
- Built-in LED indication provides clear visual indication of relay energisation.
- Screw terminals provide secure and straightforward field wiring.
Key Features
- ABB R600 boxed interface relay series.
- 115 V AC/DC rated control supply.
- 1 c/o (SPDT) contact configuration.
- 10 mA–6 A contact switching range.
- Switching voltage up to 250 V AC.
- Integrated leakage current protection.
- Built-in LED status indication.
- Screw-terminal connections for secure field wiring.
- Silver-tin-oxide AgSnO2 contact material.
- IP20 protection rating.
- DIN-rail mounting for convenient control-panel installation.
Reliable Signal Switching for Industrial Automation
Interface relays provide an important link between industrial control electronics and field loads, allowing control signals to operate separate electrical circuits while providing electrical isolation and signal matching. The ABB RB121R-115VUC is designed to perform this function in machinery, PLC systems and industrial control panels where dependable switching is essential.
The R600 series combines practical DIN-rail installation with straightforward wiring and visual status indication. With its 115 V AC/DC control input, single changeover contact, integrated leakage current protection and screw terminals, the RB121R-115VUC provides a versatile interface solution for modern industrial automation and machine-control systems.
Typical Applications
- PLC input and output interfacing.
- Industrial control and automation panels.
- Electrical isolation and signal matching.
- Machine control circuits.
- Process-control equipment.
- Industrial switching applications.
- Building automation and control systems.
- OEM machinery and production equipment.
