1 PCS new Siemens LFE50 Flame Relay #LYQ007
1 PCS new Siemens LFE50 Flame Relay #LYQ007
1 PCS new Siemens LFE50 Flame Relay #LYQ007
General Information (Siemens Original Factory Standard)
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Parameter
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Specification (LFE50)
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Unit
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Factory Notes (Original Description)
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Brand
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Siemens, Original Factory, Brand New Genuine Product
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-
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100% brand new Siemens original product (formerly Landis & GYR), manufactured in strict accordance with original factory quality control standards, factory tested before delivery to ensure consistent performance[4].
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Product Model
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LFE50 (Flame Relay; Optional Model: LFE50-110V)
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-
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Original factory model, unchanged, belonging to Siemens UV flame safeguard series, with fixed power supply and detection configuration; LFE50-110V is the 100-110V AC voltage version[2].
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Product Type
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UV Flame Safeguard, Flame Relay, Burner Flame Supervision Relay
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-
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Plug-in design, integrated with power section, self-checking electronic flame signal amplifier and flame indicator lamp, specialized for industrial burner flame supervision[2].
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Application
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Continuous Oil/Gas Burners, Industrial Combustion Systems, Burner Flame Supervision
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-
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Used with QRA50M/QRA51M UV flame detectors for flame supervision of continuously operating oil or gas burners; requires LEC1 series control unit for automatic burner startup and control[2][4].
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Supply Voltage
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AC 220-240V (-15% ~ +10%); LFE50-110V: AC 100-110V (-15% ~ +10%)
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V AC
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Dual voltage version available to adapt to different regional industrial power supply requirements, strong voltage fluctuation adaptability[1][2][4].
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Mains Frequency
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50-60 Hz ±6%
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Hz
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Adaptable to global common power frequency ranges, stable operation under frequency fluctuation within ±6%[1][2][4].
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Power Consumption
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Approx. 13 VA
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VA
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Low power consumption design, energy-saving and environment-friendly, suitable for long-term continuous operation in industrial scenarios[1][3].
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Fuse Configuration
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Built-in: 250 mA (Slow, 5×20 mm); External: Max 10 A (Slow)
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-
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Built-in slow-blow fuse protects internal components; external slow-blow fuse (max 10 A) ensures safe power supply connection[1].
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Permissible Contact Loading
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Max 2 A
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A
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Stable contact load capacity, matching the load requirements of industrial burner control circuits, ensuring reliable signal transmission[1][4].
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Matching Flame Detectors
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QRA50M, QRA51M (UV Flame Detectors)
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-
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Forms self-checking UV flame supervision system with QRA50M/QRA51M detectors, suitable for UV radiation detection of oil and gas burner flames[2][4].
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Protection Class
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IP40
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-
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IP40 protection grade effectively prevents dust and foreign objects from entering, protecting internal electronic components and ensuring stable operation in industrial environments[2][4].
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Operating Temperature Range
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-20 ~ +60 ℃ (Ambient); No Condensation Allowed
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℃
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Adaptable to harsh industrial on-site temperature fluctuations, stable performance in low-temperature and high-temperature environments without malfunction[2][4].
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Relative Humidity
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≤ 95% RH (Non-Condensing)
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% RH
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Strong humidity adaptability, suitable for humid industrial environments, effectively preventing moisture damage to internal components[4].
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Mounting Position
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Any Position (Control Cabinet/Panel Mounting; Direct Burner Mounting Optional)
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-
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Flexible mounting, applicable to various installation spaces; can be mounted in any position in control cabinets/panels or directly on burners[2].
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Weight
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1.5 kg (Net); 3 kg (Shipping)
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kg
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Net weight 1.5 kg, compact and lightweight design, convenient for installation and transportation; shipping weight includes packaging protection[1].
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Housing Material
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Impact-Proof, Heat-Resistant Plastic
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-
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Housing is made of impact-proof and heat-resistant plastic, effectively protecting internal components from mechanical damage and high-temperature influence[2].
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