Curve C can tolerate short-term overcurrents of up to five to ten times the rated current and is widely used in domestic systems.

A circuit breaker is a safety device that can automatically (i.e., without external intervention) interrupt the flow of electric current in an electrical circuit in the event of an overcurrent.

The MCB Series 90 meets any requirement for overload and short-circuit protection, for all civil, tertiary and industrial applications. The range consists of MTC, compact circuit breakers (2 to 32A, curves B and C up to 10kA) MT traditional circuit breakers (1 to 63A, curves B, C and D up to 25kA) MTHP high performance circuit breakers (20 to 125A, curves C and D up to 25kA).

Features:

• Reference standard: EN 60898, EN 60947-2
• Rated frequency: 50/60 Hz
• Interrupting capacity EN 60898 230V (Icn): 4500 A
• Interrupting capacity EN 60898 (Ics): 1 x Icn
• Interrupting capacity EN 60947-2 230V (Icu): 6 kA
• Interrupting capacity EN 60947-2 (Ics): 100% Icu
• Isolation voltage: 500V
• Rated impulse withstand voltage: 4 kV
• Minimum operating voltage: 12 V ac/dc
• Maximum operating voltage: 440 V ac / 220 V dc
• Number of electrical maneuvers: 10,000
• Number of mechanical maneuvers: 20,000
• Rigid cable cross section: <=1x16 - <=1x10+1x6 mm²
• Flexible cable cross section: <=1x10 - <=2x6 mm²
• Nominal tightening torque: 1.2 Nm
• Operating temperature: -25/+60 degrees
• Storage temperature: -40/+70 degrees