Overview
The ABB RXME 1 RK221025-AD auxiliary relay is a versatile DC-rated switching device designed for demanding industrial automation, protection, and control systems. Part of ABB’s trusted COMBIFLEX modular relay family, this auxiliary relay provides dependable performance in applications requiring high reliability and long operational life. The compact plug-in design simplifies installation and replacement in standard relay sockets.
Key Features
- Dual contact set: 2 make (NO) and 2 break (NC) contacts for flexible control logic
- Dust-proof plastic enclosure designed for harsh industrial environments
- Plug-in construction enables fast installation and removal without rewiring
- Polarity-independent coil circuit with internal protection against transient overvoltages
- Long mechanical life and optional status indicator for operational monitoring
- Part of ABB’s COMBIFLEX modular relay system for integrated automation platforms
Technical Specifications
- Relay Type: Auxiliary, DC-rated
- Contact Configuration: 2 Make (NO) + 2 Break (NC)
- Package Style: Plug-in socket mount
- Enclosure Material: Plastic, dust-proof
- Weight: Approximately 0.25 kg
- Mechanical Life: Extended cycle rating
- Protection: Transient overvoltage protection, reverse-polarity protected
- Certifications: CE, RoHS compliance
- Manufacturer: ABB Asea Brown Boveri Ltd.
- Series: COMBIFLEX modular relay family
Typical Applications
The RXME 1 RK221025-AD is commonly deployed in:
- Protection relay circuits requiring auxiliary switching functions
- Tripping and interlocking control schemes in power distribution systems
- Signaling and alarm logic in industrial automation platforms
- Machine control and sequencing in manufacturing environments
- UPS systems and backup power management circuits
- SCADA and telemetry systems requiring remote switching capability
Compatibility & Replacements
The RXME 1 RK221025-AD is designed for compatibility with ABB’s modular relay platforms and protection systems. This model shares the standard RXME 1 socket footprint with other variants in the COMBIFLEX family (such as RK221052-AH and RK221052-AN), allowing drop-in replacement where voltage and contact requirements match. Before substituting with alternative relay models, verify coil voltage, contact type, and control system socket specifications to ensure full compatibility. Consult ABB technical documentation or contact an authorized distributor to confirm replacement suitability for your specific application.
