LINETRAXX® RCM420
- Ground-fault monitor for grounded and high-resistance-grounded AC systems
- Modular installation using a single external current transformer
- RMS measurements
- Digital display with real-time readings
- Configurable Form-C (SPDT) contact outputs
The RCM420 monitors for ground-fault current in solidly-grounded and high-resistance-grounded AC (single-phase or three-phase) systems. The pickup value is adjustable from 10 mA to 10 A. A separately configurable prewarning alarm is also available. Three separately adjustable time delays are available - a pickup delay, startup delay, and delay on reset.
The RCM420 provides an accurate, RMS value. Measurements are displayed in real-time via the device's on-board digital display. All device settings are configured using the display and push buttons. Two Form-C (SPDT) relay outputs are separately configurable to trigger on the pre-warning or main alarm.
A single current transformer connects to the RCM420 for measuring ground-fault current. A wide range of sizes, shapes, and core types are available.
- Features
- Applications
- Accessories
- Ordering information
- Downloads
- Ground fault monitoring for solidly-grounded and high-resistance-grounded AC systems
- Meets or exceeds code requirements for ground-fault detection on grounded AC systems, where applicable
- RMS measurement values
- Digital display showing measured ground-fault current in real-time
- Adjustable pickup value from 10 mA to 10 A
- Connects to a single current transformer, available in a wide range of sizes, shapes, and core types
- On-board test and reset buttons with connections for external activation
- Adjustable time delays (pickup, startup, on reset)
- Latching or non-latching operation
- Two Form-C (SPDT) alarm outputs, operating normally energized (failsafe) or de-energized (non-failsafe)
- Ground fault monitoring on grounded and high-resistance grounded AC systems
- General power distribution
- Motors and motor control centers
- Generators, portable and fixed
- Control systems
- Heat trace systems, per NEC 427.22 and CEC 62-116
Mandatory accessories for LINETRAXX® RCM420
| Part No. | Opening | Shape and Type | Ordering No. |
|---|---|---|---|
| CTAC20 | 0.78" (20mm) | circular, solid | B98110005 |
| CTAC35 | 1.35" (35mm) | circular, solid | B98110007 |
| CTAC60 | 2.4" (60mm) | circular, solid | B98110017 |
| CTAC120 | 4.7" (120mm) | circular, solid | B98110019 |
| CTAC210 | 8.25" (210mm) | circular,solid | B98110020 |
| WR70x175S | 2.75"x6.9" (70x175mm) | rectangular, solid | B911738 |
| WR115x305S | 4.5"x12" (115x305mm) | rectangular, solid | B911739 |
| WR150x350S | 5.9"x13.8" (150x350mm) | rectangular, solid | B911740 |
| WR200x500S | 7.9"x19.7" (200x500mm) | rectangular, solid | B911763 |
| WS20x30 | 0.75"x1.2" (20x30mm) | rectangular, split-core | B98080601 |
| WS50x80 | 2"x3.1" (50x80mm) | rectangular, split-core | B98080603 |
| WS80x120 | 3.1"x4.7" (80x120mm) | rectangular, split-core | B98080606 |
Variants of LINETRAXX® RCM420
| Part No. | Supply Voltage | Ordering No. |
|---|---|---|
| RCM420-D-1 | 16-72 VAC (42-460 Hz), 9.6-94 VDC | B94014001 |
| RCM420-D-2 | 70-300 VAC (42-460 Hz), 70-300 VDC | B94014002 |
Downloads for LINETRAXX® RCM420
| Category | Product | Language | Date | Size | Download |
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