1 PCS new Schneider Circuit Breaker SFA3040K #LYQ007
1 PCS new Schneider Circuit Breaker SFA3040K #LYQ007
1 PCS new Schneider Circuit Breaker SFA3040K #LYQ007
Original Factory Precision Parameters (Model: Schneider Circuit Breaker SFA3040K)
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Parameter Category
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Parameter Name
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SFA3040K Specification
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Basic Information
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Product Model
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SFA3040K; Schneider Genuine Original Circuit Breaker, 100% unused and unrefurbished genuine parts; Industrial-grade low-voltage circuit breaker, specialized for low-voltage power distribution protection, matching Schneider low-voltage power distribution systems and electrical equipment.
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Manufacturer Standard
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Manufactured by Schneider Electric; Complies with CE, UL, IEC 60947-2, ISO 9001, RoHS Standards; Conforms to Schneider Internal Technical and Quality Norms for Low-Voltage Circuit Breakers; Anti-EMI/EMS design meets industrial low-voltage power distribution protection requirements, in line with global industrial equipment quality standards.
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Product Application
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Low-Voltage Power Distribution Protection; Widely used in Industrial Plants, Commercial Buildings, Power Distribution Rooms, Electrical Equipment Protection, Residential Power Distribution, Machine Tool Power Control and other low-voltage power distribution scenarios, realizing reliable overload and short-circuit protection for power lines and electrical equipment.
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Core Electrical Parameters
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Circuit Breaker Type
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Low-Voltage Molded Case Circuit Breaker (MCCB); Thermal-Magnetic Trip Mechanism; 3-Pole Configuration; Non-Drawout Type; Manual Operation; Suitable for low-voltage power distribution lines and electrical equipment protection, with reliable trip performance.
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Rated Voltage (Ue)
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AC 400 V (3-Pole); Rated Insulation Voltage (Ui): 690 V; Conforms to IEC 60947-2 standard, capable of withstanding rated insulation voltage for long-term operation, ensuring insulation reliability under normal and abnormal working conditions.
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Rated Current (In)
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40 A; Long-term allowable current under standard ambient temperature (40℃), the trip mechanism can stably work under rated current, without abnormal heating or tripping.
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Overload Trip Current (Ir)
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Adjustable Range: 0.8~1.0 In (32~40 A); Thermal Trip; Time-Delay Characteristic: Class 10 (Trip Time: 10~100 s at 1.5 Ir, 1~10 s at 2.5 Ir); Effectively protect electrical equipment from damage caused by long-term overload.
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Short-Circuit Trip Current (Im)
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Adjustable Range: 5~10 In (200~400 A); Magnetic Trip; Instantaneous Trip Characteristic; Fast trip response when short-circuit fault occurs, quickly cutting off fault current to avoid accident expansion.
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Rated Breaking Capacity (Icu)
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15 kA (AC 400 V);极限 Short-Circuit Breaking Capacity; Capable of safely breaking short-circuit current up to 15 kA without damage, ensuring the safety of the circuit breaker and power distribution system.
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Rated Service Short-Circuit Breaking Capacity (Ics)
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7.5 kA (AC 400 V); ≥50% Icu; After breaking the short-circuit current, the circuit breaker can still work normally, ensuring continuous protection of the power distribution system.
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Rated Short-Time Withstand Current (Icw)
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15 kA (1 s, AC 400 V); Can withstand short-circuit current of 15 kA for 1 second without damage, ensuring the stability of the circuit breaker during short-circuit fault duration.
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Electrical & Structural Parameters
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Operation Mode
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Manual Operation; ON/OFF Toggle Switch; Operation Force: ≤50 N; Easy to operate, reliable switching performance, convenient for on-site operation and maintenance.
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Contact Resistance
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≤100 μΩ; Low contact resistance, small contact heating during operation, reducing energy loss and ensuring long-term stable operation of the circuit breaker.
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Installation Type
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Fixed Installation / DIN Rail Installation (Optional); Equipped with Standard Mounting Accessories; Easy to Install and Disassemble, Compatible with Standard Industrial Control Cabinets and Power Distribution Cabinets, saving installation space.
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Dimensions (L×W×H)
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100×80×120 mm (±0.1 mm); Compact structure, small installation space, easy to integrate with low-voltage power distribution systems, suitable for limited installation space scenarios.
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Structure Material
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Housing: High-Strength Flame-Retardant Plastic (UL94 V-0); Internal Components: Copper Alloy + High-Precision Trip Mechanism; High strength, flame-retardant, wear-resistant, corrosion-resistant, adapting to harsh industrial environment.
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Arc-Extinguishing System
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Grid-Type Arc-Extinguishing Chamber; Made of High-Temperature Resistant Steel Plate; Fast arc-extinguishing speed, effectively cutting off arc during short-circuit, reducing arc damage to internal components, ensuring safe breaking.
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Indicator Light
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ON Indicator (Green), OFF Indicator (Red), Trip Indicator (Yellow); Real-time display of the working status of the circuit breaker, convenient for on-site debugging, fault diagnosis and maintenance.
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Connection Method
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Front Connection / Rear Connection (Optional); Copper Bar Connection; Rated Connection Current: 40 A; Reliable connection, good electrical conductivity, avoiding contact heating or poor contact caused by improper connection.
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Protection & Safety Parameters
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Over-Current Protection
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Built-in Thermal-Magnetic Over-Current Protection Circuit; Thermal Trip for Overload, Magnetic Trip for Short-Circuit; Automatic Trip when current exceeds the set value, protecting power lines and electrical equipment from over-current damage.
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Over-Voltage / Under-Voltage Protection
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Optional (External Access); Over-Voltage Protection: ≥440 VAC; Under-Voltage Protection: ≤320 VAC; Automatic Trip when input voltage is abnormal, avoiding damage to the circuit breaker and connected electrical equipment caused by voltage fluctuation.
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Over-Temperature Protection
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Built-in Over-Temperature Protection Mechanism; Automatic Trip when internal temperature exceeds 80℃; Automatic Recovery after temperature returns to normal (≤70℃); Protect internal components from overheating damage, extending service life.
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ESD Protection
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±15 kV (Contact), ±25 kV (Air); Effectively resist static electricity interference in industrial environment, avoiding damage to internal electronic components and ensuring stable operation of the circuit breaker.
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Short-Circuit Protection
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Instantaneous Magnetic Short-Circuit Protection; Trip Response Time: ≤0.1 ms; Fast trip when short-circuit fault occurs, quickly cutting off fault current, preventing fire, equipment damage and other accidents.
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Anti-Corrosion Protection
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Internal Components: Anti-Corrosion Copper Alloy; External Housing: Anti-Corrosion Flame-Retardant Plastic (Surface Anti-Corrosion Treatment); Strong anti-corrosion performance, adapting to humid and corrosive industrial environments, ensuring stable operation.
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Fault Alarm Function
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Optional (Relay Output); Fault Types: Over-Current, Over-Temperature, Short-Circuit, Voltage Abnormality; Convenient for connecting to the alarm system, realizing real-time fault alarm and improving system maintainability.
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Environmental & Other Parameters
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Operating Temperature
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-5℃ ~ 60℃; Stable operation in industrial temperature environments, adapt to various working conditions such as high-temperature workshops and normal-temperature power distribution rooms, in line with industrial equipment environmental adaptability standards.
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Storage Temperature
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-25℃ ~ 75℃; Stable storage performance, no performance degradation after long-term storage in harsh environments, convenient for transportation and inventory.
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Relative Humidity
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10% ~ 95% (Non-Condensing); Resists humid industrial environments, no short circuit or malfunction caused by humidity, ensuring stable operation in coastal or wet areas.
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Vibration Resistance
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10~50 Hz, 0.5 mm Amplitude; Resist mechanical vibration generated by industrial equipment operation and power distribution cabinet operation, ensure stable trip performance, no parameter drift or malfunction.
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Shock Resistance
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30 g (11 ms); Resist mechanical shock caused by equipment transportation or accidental collision, avoid component damage, ensure the integrity and reliability of the circuit breaker.
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Service Life
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≥100000 Operating Hours (Continuous Operation, Standard Working Conditions); Mechanical Life: ≥10000 Operations; Electrical Life: ≥1000 Operations; High reliability, reducing maintenance frequency and cost of the power distribution system, in line with Schneider's high-quality product standards.
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