The Allen-Bradley 1492-RCDA2A25 is a Type A residual current circuit breaker for detecting and interrupting ground leakage in one-pole-plus-neutral circuits. Its 25 A rating and 30mA sensitivity support personnel protection when used with miniature circuit breakers.
Technical Specifications
- Manufacturer: Allen-Bradley
- Part Number: 1492-RCDA2A25
- Product Type: Circuit Breaker
- RCD Type: Type A
- Poles: 2-pole (1 pole + neutral)
- Rated Current: 25 A
- Rated Sensitivity: 30mA
- Minimum Test Circuit Voltage: 170V
- Rated Frequency: 50/60Hz
Key Features and Functionality
- Leakage Protection: Detects ground leakage and interrupts ungrounded conductors.
- Type A Sensing: Responds to AC and pulsating DC leakage.
- Personnel Sensitivity: Uses 30mA sensitivity for personnel protection.
- Pole Configuration: Disconnects one pole plus neutral together.
- Dual Terminals: Supports two wires or wire-plus-bus-bar connections.
Installation and Operational Notes
- Mount on 35 mm EN 60715 DIN rail.
- Tighten terminals to 2.8 N•m (25 lb•in).
- Use 18- 4 AWG conductors in dual terminals.
- Connect line and load in either direction.
- Press the test button to verify device functionality.
Series Information
Allen-Bradley Bulletins 188, 1489, 1492, 1694
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