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GE QPJ-SBR-201 Circuit Breaker Module
GE QPJ-SBR-201
GE QPJ-SBR-201 is a solid-state circuit breaker module with high reliability and high precision, which belongs to the series of dedicated components designed by General Electric (GE) for critical power distribution and control systems. In electrical systems, this product acts as an “intelligent guardian”—it goes beyond the functions of traditional thermal-magnetic circuit breakers and integrates advanced solid-state switching technology, precise current sensing, and microprocessor control. The core function of GE QPJ-SBR-201 is to monitor line current; when fault conditions such as overload or short circuit are detected, it achieves millisecond-level circuit breaking at a microsecond-level speed (far faster than mechanical circuit breakers), thereby providing the highest level of protection for downstream precision equipment. Its core value lies in arc-free breaking, extremely long mechanical life, adjustable tripping characteristics, and excellent reliability. It is highly suitable for protecting sensitive electronic loads, scenarios requiring frequent switching, and mission-critical applications with extremely high requirements for power supply continuity, effectively preventing equipment damage and production interruptions caused by electrical faults.
Product Parameters
- Product Model: QPJ-SBR-201
- Manufacturer: General Electric (GE)
- Product Type: Solid-State Circuit Breaker Module
- Rated Operating Voltage: 480 VAC (or defined by model, e.g., 250 VAC)
- Rated Continuous Current: 20 A (or defined by model; “201″ may represent 20 A)
- Breaking Capacity: Up to 100 kA (depends on the cooperation of external fuses)
- Tripping Characteristics: Programmable/Adjustable (usually supports instantaneous, short-time delay, and long-time delay)
- Control Power Supply: 24 VDC / 24 VAC (typical value)
- Operation Mode: Electronic, supporting remote control for opening/closing
- Status Indication: Built-in LED status indicators (power, trip, closed)
- Response Time: < 1 ms (for short-circuit faults)
- Communication Interface: May support hard-wired alarm signal output (auxiliary contacts)
- Installation Method: DIN rail mounting or panel mounting
- Operating Temperature: -40°C to +70°C
Structure and Composition
GE QPJ-SBR-201 adopts a compact and robust modular design. Its housing is usually made of high-strength engineering plastic or metal to ensure electrical insulation and heat dissipation. Its internal structure mainly consists of the following core components:
- Solid-State Switching Device: Such as high-power Silicon Controlled Rectifiers (SCR) or Insulated Gate Bipolar Transistors (IGBT). As the core for contactless on-off operations, it achieves extremely high switching speed and long service life.
- Precision Current Sensor: Monitors the load current in real time and transmits signals to the control unit.
- Microprocessor Control Unit: The “brain” of the module, which continuously analyzes current signals, executes programmable protection algorithms (e.g., I²t characteristics), and issues breaking commands when faults occur.
- Gate Drive Circuit: Receives commands from the control unit and drives the on-off of solid-state switching devices.
- Control Power Conversion Circuit: Provides the required working power for internal electronic circuits.
The front of the module is usually equipped with status indicators and possible setting DIP switches, while the rear is equipped with terminal blocks for power input, load output, and control signals.
Key Features and Advantages
Ultra-Fast Breaking and Arc-Free Operation
The most prominent advantage of GE QPJ-SBR-201 is its microsecond-level response speed. It can complete breaking before the short-circuit current reaches its peak, greatly limiting the fault energy let through to downstream equipment and providing a protection level that surpasses traditional circuit breakers. Its solid-state switching feature enables true arc-free breaking, eliminating fire hazards and reducing arc erosion of contactors.
Long Service Life and Programmability
Since there are no mechanical contacts or moving parts, its operating life can reach millions of times—far exceeding any electromechanical circuit breaker. It is particularly suitable for scenarios requiring frequent switching. Users can precisely set its tripping curves (long-time delay, short-time delay, instantaneous) through DIP switches or configuration tools, thereby achieving perfect selective coordination with upstream and downstream protection equipment and avoiding fault escalation.
High Reliability and Intelligent Monitoring
Solid-state technology brings high reliability, making the module insensitive to environmental factors such as vibration, dust, and humidity. It usually provides remote control functions and status signal output (e.g., trip alarm, ready signal), which facilitates integration into more advanced monitoring systems (such as PLC or SCADA). This enables predictive maintenance and energy management, improving the intelligence level of the entire power system.
Application Fields
GE QPJ-SBR-201 is specially designed for demanding protection and control applications.
- In the field of industrial automation: It is used to protect expensive and sensitive electronic equipment such as robot controllers, servo drives, and PLC systems, preventing damage caused by power disturbances and short circuits.
- In data centers and communication base stations: It provides precise power distribution protection and remote power management for server racks and network equipment.
- In the new energy field: For example, at the output end of photovoltaic inverters and energy storage systems, its fast breaking capability is crucial.
- In addition: In the power systems of aerospace, marine, and military equipment, QPJ-SBR-201 has become the preferred solution due to its high reliability, long service life, and excellent protection performance.
Installation and Maintenance
Pre-Installation Preparation
Before installing GE QPJ-SBR-201, ensure that the power supply of the entire system is completely turned off and safely locked out/tagged out (LOTO). Confirm that the humidity, dust, and temperature of the installation environment meet the specification requirements. Verify that the module model matches the rated current and voltage of the line. Prepare appropriate installation tools (such as rails and screwdrivers) and carefully read the wiring diagram in the manual—especially the connection methods of the control power supply and signal lines.
Maintenance Recommendations
The module has extremely low maintenance requirements. Daily inspections mainly include:
- Checking whether the status indicators are normal;
- Inspecting whether the ventilation holes are blocked;
- Confirming that all electrical connections are tight.
Regularly use dedicated test equipment or its self-test function to verify the accuracy of its protection characteristics. Since it is a solid-state device, on-site internal maintenance is usually not possible. If a fault is confirmed through diagnosis, the entire module needs to be replaced. Maintaining the stability and cleanliness of the control power supply is the key to ensuring its long-term reliable operation.
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Core Product Range
Control & Signal Modules
- Central Control Units: PLC, DCS, CPU modules
- Interface & Communication Modules: Input/Output (AI/AO/DI/DO) modules, fiber optic interface boards, communication modules
- Functional Boards & Cards: I/O boards, counting boards, data acquisition cards, gas turbine cards, FIM cards, embedded cards
Drive & Peripheral Equipment
- Servo drives, servo motors
- Industrial displays, industrial keyboards
- Controllers, encoders, regulators, sensors
Power & Connection Components
- Power modules, thyristor modules, terminal modules
- Wires, cables, power modules, control modules
Our Competitive Advantages
- Industry Expertise & Inventory Strength: With long-term experience in the industrial control sector, we maintain a large stock of in-demand products to ensure fast delivery.
- Leading Market Position: We stand out with competitive pricing and strict quality control, guaranteeing reliable performance of all products.
- Comprehensive Product Coverage: Beyond standard models, we also supply rare and discontinued automation parts, meeting diverse customer needs.
- Assured After-Sales Service: Any product with quality issues can be replaced free of charge within 15 days of purchase, providing peace of mind for your operations.
Applicable Industries
Our automation spare parts are widely used in key sectors including:
Iron & steel, hydropower, nuclear power, power generation, glass manufacturing, tire factories, rubber production, thermal power generation, papermaking, shipping, navigation, and more.
Iron & steel, hydropower, nuclear power, power generation, glass manufacturing, tire factories, rubber production, thermal power generation, papermaking, shipping, navigation, and more.
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