Sygonix SY-6438022 prúdový chránič 4-pólový 40 A 300 mA Typ A 400 V 10 kA

Residual current circuit breakers (RCCBs) are essential for protecting people and equipment from dangerous leakage currents that can cause electric shock or fire. The Sygonix SY-6438022 is a 4-pole RCCB rated at 40 A with a residual operating current of 300 mA, suitable for three-phase systems up to 400 V AC. Its Type A design detects alternating and pulsating direct residual currents, making it appropriate for many modern installations.

Who is it for

Electricians and panel builders who need a reliable residual current device for distribution boards in commercial or industrial settings. It is also suitable for homeowners with three-phase supplies who require protection against earth leakage faults.

Main features

• 4-pole RCCB for 400 V AC three-phase networks
• Rated current 40 A, residual operating current 300 mA
• Type A tripping for AC and pulsating DC residual currents
• Short-circuit breaking capacity 10 kA
• DIN rail mounting for standard distribution boards

Specifications

• Product type: Residual Current Circuit Breaker (RCCB)
• Number of poles: 4
• Rated current: 40 A
• Rated residual operating current: 300 mA
• RCCB type: Type A
• Rated voltage: 400 V AC
• Rated frequency: 50/60 Hz
• Rated short-circuit breaking capacity (Icn): 10 kA
• Mounting type: DIN rail
• Degree of protection: IP20
• Operating temperature range: -25°C to +40°C
• Standards compliance: IEC/EN 61008-1
• Tripping characteristic: Instantaneous
• Terminal capacity (rigid): up to 25 mm²
• Terminal capacity (flexible): up to 16 mm²
• Electrical endurance: 10,000 cycles
• Mechanical endurance: 20,000 cycles
• Surge current withstand: 250 A (8/20 µs wave)
• Connection type: Screw terminals
• Installation environment: Indoor

Tips

Ensure the RCCB is installed by a qualified electrician and tested regularly using the test button. For installations with electronic loads that may produce smooth DC residual currents, consider a Type B RCCB.