Schneider Electric 140QSPXM Industrial Fuse

The Schneider Electric 140QSPXM delivers superior circuit protection for demanding industrial applications. This panel-mounted fuse provides reliable performance in critical power distribution systems.

Electrical Specifications & Ratings

• Brand: Schneider Electric
• Model: 140QSPXM
• Product Series: Modicon Protection Components
• Voltage Rating: 600V AC maximum
• Current Rating: 50 Amperes continuous
• Interrupting Capacity: 100 kA at 600V AC
• Fuse Characteristic: Quick-acting protection
• Response Time: < 10 ms for short-circuit events
• Voltage Drop: < 90 mV at rated current
• Power Dissipation: < 4.5 W per pole at full load
• Frequency Range: 0-400 Hz AC systems
• DC Rating: 250V DC maximum operation

Mechanical & Physical Properties

• Body Material: High-strength ceramic construction
• Contact Material: Silver-plated copper terminals
• Dimensions: 120 mm × 80 mm × 40 mm (L×W×H)
• Weight: 0.8 kg (1.76 pounds)
• Mounting Style: Panel mount with screw fixation
• Connection Type: Screw terminals for 35 mm² cables
• Protection Class: IP20 for indoor applications
• Torque Specification: 4.0 N·m for terminal connections

Environmental Specifications

• Operating Temperature: -10°C to +55°C (14°F to 131°F)
• Storage Temperature: -25°C to +70°C (-13°F to 158°F)
• Relative Humidity: 95% maximum non-condensing
• Vibration Resistance: 1.5g at 10-500 Hz frequency
• Shock Resistance: 50g for 11 ms duration
• Operating Altitude: 2000 meters maximum elevation
• Pollution Degree: Level 3 for industrial environments

Safety & Compliance

• Safety Standards: UL 248-1 and IEC 60269-1
• Certification Marks: UL, cUL, CE recognized
• Isolation Voltage: 2500V AC for 1 minute
• Creepage Distance: > 16 mm between terminals
• Clearance Distance: > 12 mm through air
• Arc Extinction: Quartz sand filling method
• Indicator Feature: Visual fault indication available

Packaging & Delivery Information

• Package Quantity: Single fuse unit
• Package Dimensions: 150 mm × 100 mm × 50 mm
• Shipping Weight: 0.9 kg (2.0 pounds)
• Shipping Carriers: FedEx, UPS, DHL available
• Warranty Period: 12 months quality assurance
• Packaging Material: Protective cardboard with foam

Technical FAQ

• What applications typically require a 100 kA interrupting capacity?
• High fault current applications include main power distribution panels, large motor control centers, and industrial plant main feeders.
• How does the quick-acting characteristic protect equipment?
• The fast response time of the 140QSPXM limits let-through energy to prevent damage to sensitive downstream components.
• Can this fuse handle motor starting currents effectively?
• Yes, the time-current characteristic allows for motor starting surges while providing protection against fault conditions.
• What maintenance does this fuse require during its service life?
• The fuse requires no regular maintenance, but you should inspect it periodically for physical damage or corrosion.
• How does the ceramic body construction enhance safety?
• Ceramic material provides excellent arc-quenching properties and thermal stability during high-current interruption events.

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