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GE CR305E004
1. Overview
The GE CR305E004 is a three-pole magnetic contactor (NEMA Size 3) produced by General Electric. It is widely used in high-power electrical control systems, and belongs to the CR305E series. This model is one of the most common and popular options in the whole series.
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2. Technical Parameters
- Model Number: CR305E004
- Frame Size: NEMA Size 3
- Rated Voltage: 600VAC (typical); also compatible with 400VAC, 460VAC and other voltage levels
- Rated Current: 100A
- Control Voltage Range: 100-250VAC
- Coil Power: 0.9W
- Rated Load Breaking Capacity: 10.5kA
- Rated Short-Circuit Withstand Capacity: 25kA
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3. Product Features
High Reliability
This contactor adopts General Electric’s advanced solenoid technology, delivering outstanding shock resistance and anti-aging performance. It guarantees stable and consistent operation even under long-term working conditions.
High Efficiency
The contact system is made of silver-graphite composite material, featuring low conduction impedance and low heat generation. This design effectively reduces energy loss and improves overall operating efficiency.
Easy Maintenance
With a compact structure and modular design, the contactor allows quick on-site replacement and routine maintenance, cutting down downtime and labor costs.
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4. Structure and Components
- Main Contact Assembly: Controls the connection and disconnection of the main power circuit.
- Auxiliary Contact Assembly: Performs circuit control and protection functions.
- Solenoid Coil: Generates magnetic force when energized to attract the main contacts and complete the circuit closing action.
- Enclosure and Junction Box: Provides a safe mounting space and excellent heat dissipation performance, protecting internal parts from damage and dust.
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5. Applications
Industrial Automation
Used for motor control and circuit breaking at the front end of frequency converters.
Power Distribution Systems
Applied to high-power switch control in power distribution cabinets and distribution boxes.
Energy Industry
Suitable for motor protection and control in wind farms and photovoltaic power stations.
Building Facilities
Used to control high-power equipment such as large air conditioning systems and elevators.
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