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1SNA645003R0500 ABB RB121-115VUC Interface Relay R600 115 V AC/DC 1 c/o
ABB RB121-115VUC R600 interface relay with a 115 V AC/DC control supply, 1 c/o (SPDT) output contact and 10 mA to 6 A switching range.
£14.37
Why Choose the ABB RB121-115VUC Interface Relay?
The ABB RB121-115VUC is a compact and reliable R600 interface relay designed for electrical isolation, signal matching and switching applications in industrial control and automation systems. With ABB order code 1SNA645003R0500, this boxed interface relay provides a 1 c/o (SPDT) output and operates from a 115 V AC/DC control supply.
As part of the ABB R600 interface relay series, the RB121-115VUC combines a compact 6 mm housing with screw terminals, an integrated LED indicator and a relay contact capable of switching loads from 10 mA up to 6 A. The relay is designed for DIN rail mounting and provides a practical solution where reliable signal isolation and switching are required within a small control panel footprint.
The relay provides a 115 V AC/DC rated control supply and a 1 c/o (SPDT) output contact rated for switching applications up to 250 V AC and 6 A. Its compact construction and integrated status indication make it suitable for PLC interfaces, industrial automation equipment and electrical control systems.
Key Advantages
- Compact ABB R600 interface relay for industrial control and automation.
- 115 V AC/DC control supply suitable for industrial control circuits.
- 1 c/o (SPDT) output contact provides flexible switching capability.
- Switching range from 10 mA to 6 A.
- Compact 6 mm wide housing helps maximise DIN rail space.
- Integrated LED status indication provides visual confirmation of relay energisation.
- Screw terminal connection provides straightforward wiring for control panels.
Key Features
- ABB R600 interface relay series.
- RB121-115VUC relay type.
- 115 V AC/DC rated control supply.
- 1 c/o (SPDT) output contact.
- 10 mA to 6 A switching range.
- 12–250 V AC output switching range.
- Integrated LED indication.
- Screw terminal connections.
- DIN rail mounting capability.
- Silver-tin-oxide (AgSnO2) contact material.
- Compact 6 mm wide housing for high-density installations.
Reliable Signal Interface for Industrial Automation
Interface relays such as the ABB RB121-115VUC provide electrical isolation between control circuits and connected loads while allowing signals from automation equipment to operate external devices. This makes them useful for PLC interfaces, control panels and industrial machinery where dependable signal switching is required.
The R600 series is designed around a compact DIN rail-mounted format, allowing interface relays to be installed efficiently in control cabinets. The RB121-115VUC combines a 115 V AC/DC control input with a 1 c/o output contact, integrated LED indication and screw terminals for practical industrial installation.
Typical Applications
- PLC output and input interfacing.
- Industrial automation control panels.
- Machine control and automation systems.
- Signal isolation and switching.
- Electrical control and switching circuits.
- DIN rail-mounted interface systems.
- Industrial machinery and process control equipment.
Technical Specifications
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| Device Type | Interface Relay | |
|---|---|---|
| Terminal Type | Screw | |
| Mounting Type | DIN rail | |
| Series | R600 | |
| ABB order code | 1SNA645003R0500 | |
| Product type | Interface relay | |
| Function | Boxed interface relay R600 | |
| Control supply voltage | 115 V AC/DC | |
| Output | 1 c/o (SPDT) contact | |
| Output signal | 12–250 V AC / 10 mA–6 A | |
| Contact material | Silver-tin-oxide (AgSnO2) | |
| Terminal type | Screw terminals | |
| Indication | 1 integrated LED | |
| Power loss | 2 W | |
| Protection rating | IP20 | |
| Mounting type | DIN rail mounting | |
| Product width | 6 mm | |
| Product height | 67.5 mm | |
| Product depth / length | 70 mm | |
| Product net weight | 0.02 kg | |
| Standards | IEC, UL, CSA | |
| Minimum order quantity | 10 pieces |
Frequently Asked Questions
What is the ABB RB121-115VUC used for?
The ABB RB121-115VUC is an R600 interface relay used for electrical isolation, signal matching and switching applications in industrial automation and control systems.
What control voltage does the RB121-115VUC require?
The RB121-115VUC operates from a 115 V AC/DC control supply.
What type of output contact does the RB121-115VUC have?
The relay has a 1 c/o (SPDT) output contact with a switching range of 10 mA to 6 A.
How is the ABB RB121-115VUC connected?
The RB121-115VUC uses screw terminals and is designed for DIN rail mounting within industrial control panels.
Does the RB121-115VUC have an LED indicator?
Yes, the RB121-115VUC has an integrated LED indicator that provides visual indication of relay energisation.
Trusted by Industrial Automation Engineers Worldwide
ABB R600 interface relays provide compact solutions for electrical isolation, signal matching and reliable switching within industrial automation and control systems.
