Overview
The ABB RXMM 1 RK 214 004-AD is a space-efficient auxiliary relay module designed for DC-powered control and protection circuits in industrial automation. This module features a dual-coil architecture, housing two independent relay sections—each with three contacts—making it ideal for applications requiring compact, reliable signal routing and control logic.
Key Features
- Dual-coil design with three contacts per coil for flexible contact configurations
- 24VDC rated coil voltage for standard industrial control applications
- Compact plug-in form factor suitable for relay racks and panel mounting
- High operating reliability for protection and control functions
- Made in Sweden with proven durability in harsh industrial environments
Technical Specifications
- Coil Voltage: 24 VDC
- Contact Configuration: 3 contacts per coil (2 coils total)
- Coil Resistance: 460 Ω
- Electrical Life: 11,000 operations
- Displacement: 0.132 mm
- Weight: 420 g
- Origin: Sweden
- Type: Plug-in auxiliary relay
Typical Applications
The ABB RXMM 1 RK 214 004-AD excels in control equipment and power system protection circuits where interposing relay functions, position repeat operations, or output relay duties are required. The dual-coil module is particularly suited for applications with space constraints, allowing integrators to achieve multiple relay functions within a single compact unit. Common uses include:
- Protective relay output stages and trip logic circuits
- Position indication and status repeat functions
- Interposing relay applications in control circuits
- Signal multiplying and control interlocking functions
Compatibility & Replacements
The RXMM 1 series is a legacy ABB relay platform widely deployed in power systems and industrial control schemes. While modern replacement options such as the RXMB 1 and RXMC 1 exist with similar contact configurations and pin compatibility, the RXMM 1 RK 214 004-AD remains the original specification for many legacy installations. When upgrading to newer relay technology, verify contact configuration, coil voltage, and operating time characteristics to ensure proper system function.
