GE 469-P1-HI-A20-E Industrial Overload Relay
1. Product Description
GE 469-P1-HI-A20-E is an industrial-grade overload relay from GE, designed to protect electric motors and electrical equipment from damage caused by overloads, phase loss, or current imbalances. It’s ideal for use in factory motor control centers, conveyor systems, pumps, compressors, and HVAC equipment—scenarios where motors are critical to operations, and unexpected damage (from too much current or missing phases) would cause costly downtime.
What makes it practical:
- Fault Protection: Monitors the current flowing through a motor. If the current is too high (overload, e.g., a conveyor jammed with products) or one phase of power is missing (phase loss, a common electrical fault), it quickly shuts off power to the motor to prevent overheating or burnout.
- Easy to Set Up: Has simple dials to adjust the “current trip level” (matching the motor’s rated current) and “trip delay” (to avoid false triggers from short-term current spikes, like a motor starting up). No complex programming is needed.
- Tough for Industrial Use: Built with a rugged metal housing that resists dust, vibration, and mild moisture. It works reliably in busy factory floors, motor control cabinets, or outdoor equipment enclosures with temperature changes.
It’s perfect for protecting a 3-phase pump motor in a water treatment plant (preventing damage if the pump gets clogged) or a conveyor motor in a packaging line (stopping power if the line jams and overloads the motor).
2. Key Technical Specifications
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Parameter Category
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Specific Details
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Protection Functions
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Overload protection, phase loss protection, current imbalance protection
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Current Rating Range
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5A – 20A (compatible with medium-sized industrial motors)
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Motor Compatibility
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3-phase AC motors (standard for industrial equipment)
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Trip Delay Adjustment
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0.5s – 30s (prevents false triggers from startup currents)
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Voltage Compatibility
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208V – 480V AC (works with common industrial power systems)
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Output Type
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1 normally closed (NC) relay contact (shuts off power when fault occurs)
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Operating Temperature
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-20°C to +60°C (suitable for factory/equipment environments)
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Mounting Style
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DIN rail (35mm standard) / panel mount
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Size (W×H×D)
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45mm×120mm×95mm (compact for motor control cabinets)
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Certifications
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IEC 60947-4-1, UL 508, CE (meets global industrial safety standards)
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3. System Integration
The 469-P1-HI-A20-E acts as a “motor bodyguard” in industrial electrical systems—simple to integrate and critical for safety:
- Current Monitoring: Wires in series with the motor’s power supply to track current flow. It constantly compares the actual current to the set “trip level” (matching the motor’s rated current, e.g., 15A for a 10HP motor).
- Fault Response: If current exceeds the trip level (overload) or one phase is missing, the relay’s NC contact opens—cutting power to the motor’s contactor (a switch that controls the motor’s power). This stops the motor within seconds to prevent damage.
- Fast Setup: Uses standard industrial wire (2.5-4mm²) for power and control connections. It clips onto a DIN rail in the motor control cabinet, next to the contactor, and takes 15-20 minutes to wire. The current trip level is set via a dial—no tools needed for basic adjustment.
- Status Monitoring: Has an LED indicator that shows normal operation (green) or fault (red). If the red light turns on, you know the relay has shut off the motor—simply fix the issue (e.g., clear a conveyor jam) and reset the relay to restart.
4. Related Models in the Same Series
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Model
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Key Differences & Uses
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GE 469-P1-HI-A05-E
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Lower current range (1A – 5A) – for small motors (e.g., 1HP fan motors, small pump motors in laboratory equipment).
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GE 469-P1-HI-A50-E
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Higher current range (20A – 50A) – for large motors (e.g., 25HP compressor motors, heavy-duty conveyor motors in mining).
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GE 469-P1-HI-A20-D
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Extended temperature range (-40°C to +70°C) – for harsh environments (e.g., cold storage freezer motors or high-heat steel mill motors).
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GE 469-P1-HI-A20-C
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Enhanced communication (Modbus RTU) – for remote monitoring (e.g., a control room tracking motor status and fault history via HMI).
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GE 469-P1-HI-A20-B
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Dual-output contacts (1 NC + 1 NO) – for systems needing both motor shutdown and alarm triggers (e.g., activating a siren when a fault occurs).
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GE 469-P1-HI-A20-F
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Compact size (30mm width) – for tight motor control cabinets (e.g., small HVAC units or portable industrial equipment).
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GE 469-P1-HI-A20-G
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Ground fault protection (adds protection against current leaks to ground) – for wet environments (e.g., food processing plant washdown motors, outdoor pumps).
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