Siemens 5SJ4140-7HG40 Miniature Circuit Breaker 1P C40A 14kA

The Siemens 5SJ4140-7HG40 is a 1-pole SENTRON miniature circuit breaker rated 40A with C tripping characteristic. It provides overload and short-circuit protection for branch circuits in infrastructure and industry environments, with a breaking capacity of 14kA per UL 1077 and CSA C22.2 No.235 at 240V AC, equal polarity.

Technical specifications:

• MLFB: 5SJ4140-7HG40
• Manufacturer: Siemens
• Product line: SENTRON
• Design: Miniature circuit-breaker 5SJ4
• Number of poles: 1 (1P)
• Tripping characteristic: C
• Rated current: 40A at 30°C and 40°C; 36.3A at 55°C
• Insulation voltage (Ui): 440V AC
• Operating voltage (UL 489 / CSA): 240/120V AC
• Supply voltage: 400V AC / 60V DC
• Breaking capacity (UL 1077 / CSA C22.2 No.235): 14kA
• Breaking capacity (IEC 60947-2): 15kA
• Breaking capacity (EN 60898): 10kA
• Power loss per pole at rated current: 4.8W
• IP rating: IP 0 (handle range)
• Operating temperature: -25°C to +55°C
• Storage temperature: -40°C to +75°C
• Mounting: DIN rail, any position
• Terminals: Combined terminal top and bottom
• Terminal tightening torque: 3.5 Nm (Cu, 60/75°C)
• Connectable conductor cross-section: 0.75 mm² to 25 mm²
• Dimensions (WxHxD): 18 x 90 x 70 mm
• Weight: 163 g
• Standards: IEC/EN 60947-2, EN 60898, UL 489

Features and benefits:

• Halogen-free and silicon-free construction
• Touch-protected design included as standard
• Sealable handle for additional security
• Accepts supplementary add-on devices
• Flexible mounting in any orientation on standard DIN rail
• Mechanical service life of 10,000 operating cycles

Applications:

• Single-pole branch circuit protection in industrial switchgear and control panels
• Distribution board protection in infrastructure installations
• 240V AC circuit protection in UL 489-compliant installations
• Equipment protection in industry and infrastructure environments

Compliant with IEC/EN 60947-2, EN 60898, and UL 489. Part of the Siemens SENTRON range.

Also known as: Siemens 5SJ4140-7HG40, SENTRON 5SJ4 1P 40A MCB.