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GE CR305E004 Magnetic Contactor
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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6. Installation and Maintenance
Installation
DIN rail mounting is recommended to secure the contactor firmly and prevent loosening caused by vibration. During wiring, select the proper cable cross-section strictly in accordance with the voltage rating marked on the nameplate to avoid overload and safety hazards.
Maintenance
Inspect the contacts regularly for ablation or oxidation, and clean up dust to maintain good heat dissipation. Test the coil resistance periodically to ensure it stays within the rated range.
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Company Introduction
With 20 years of professional experience in large-scale imported systems, our company is engaged in the sales of spare parts for distributed control systems (DCS), programmable logic controllers (PLC), MOTOROLA MVME industrial modules, industrial control communication converters (Anybus), remote input/output modules (RTU), industrial personal computers (IPC), industrial low-frequency screens (IPC), human-machine interface SCSI (50, 68, 80 Pin), AnyBus (Gateway), redundant fault-tolerant control systems, and robot systems.
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Our Advantages
Rich Product Line
We have a complete range of industrial control system equipment, which can meet the various needs of customers in different fields. Whether it is PLC, inverter, sensor, or other automatic control equipment, we can provide professional solutions.
High-Quality Service
We have an experienced team that can provide customers with comprehensive services from product selection, technical support to after-sales service. We always adhere to customer-centricity and create maximum value for customers.
Stable Supply Chain
We have established long-term and stable cooperative relationships with many world-renowned brands, which can ensure the authenticity and stable supply of products.
Professional Technical Support
Our technical team has rich industry experience and can provide customers with professional technical consulting and solutions.
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