Overview
The ABB RXMA1 RK211066-AN auxiliary relay is part of ABB’s established RXMA1 family of signalling and tripping relays. This 110-125V unit features a 28-pin Combiflex plug-in configuration, providing a compact and reliable solution for industrial automation control circuits. Built to ABB’s exacting standards, the RXMA1 series has served process industries, power systems, and manufacturing facilities for decades.
Key Features
- 110-125V AC/DC operation with standard Combiflex 28-pin socket
- Auxiliary signalling and tripping relay for PLC and control systems
- Proven ABB reliability in industrial automation applications
- Direct replacement for existing RXMA1 installations
- Compact design compatible with standard relay panels
Technical Specifications
| Coil Voltage | 110-125V AC/DC |
| Configuration | Combiflex 28-pin plug-in |
| Relay Type | Auxiliary / Signalling Relay |
| Part Number | RK 211 066-AN |
| Series | RXMA 1 |
| Manufacturer | ABB Asea |
| Country of Origin | Sweden (ABB manufacture) |
| Condition | New in Box |
Typical Applications
The RXMA1 RK211066-AN is ideal for:
- PLC processor interface and signal conditioning
- Industrial motor control and interlock circuits
- Power system protection and tripping schemes
- Process control signalling and alarm functions
- Manufacturing automation and machine controls
- Retrofit and legacy system maintenance
Compatibility & Replacements
The ABB RXMA1 RK211066-AN is designed as a direct plug-in replacement for equivalent 110-125V RXMA1 auxiliary relays with the same 28-pin Combiflex socket. Other variants in the RXMA1 family (RK 211 064-AH, RK 211 073-AH, and RK 211 073-AD) operate at different voltage ratings (24V DC, 48-55V DC) but share the same modular relay design. When replacing or upgrading, verify coil voltage and contact ratings match your circuit requirements. ABB technical support and engineering documentation provide guidance for system-specific compatibility.
