The thermal-magnetic circuit breaker is located next to the circuit breaker and integrates a magnetic protection to a thermal one, and in case of need it interrupts the electric current.

The thermal-magnetic circuit breaker is, therefore, a system that combines the functions of the circuit breaker with magnetic and thermal features.

The magneto-thermal differential switch in the electrical system integrates three different protections:

• The magnetic one for short circuits that can endanger an entire building with the danger of fire
• The thermal one for overloads in the supply of electricity (for example, more than one appliance in operation)
• The differential one proper to the circuit breaker, which protects the subject from a current leakage
  
  

The C curve, trip threshold of 5 to 10 times In, for application of ohmic-inductive circuits with medium inrush currents. And widely used in domestic systems.

The AC type differ ential circuitbreaker the tripping is assured for suddenly or slowly increasing applied sinusoidal alternating differential currents (IEC EN 61008-1).

RCD Series 90 meets any requirement for ground fault protection for any application area. The range consists of MDC compact residual current circuit breakers. (6 to 32A, B and C curves, up to 10kA and ln from 30 and 300mA of AC, A, AIR, AS and F types) BD and BDHP, MV and MTHP magnetothermal circuit breaker blocks (ln from 10mA to 3A of AC, A, AIR, AS and A types Adjustable) IDP pure differential (up to 125A, ln from 10 to 500mA of AC, A, AIR, AS, F and B types).

Features:

• Rated frequency: 50/60 Hz
• Interrupting capacity 230V (Icn): 6000A
• Interrupting capacity (Ics): 1 x Icn
• Interrupting capacity 230V (Icu): 10 kA
• Interrupting capacity (Ics): 100% Icu
• Isolation voltage: 500V
• Immunity level (8/20µs wave): 250A
• Rated impulse withstand voltage: 4 kV
• Overvoltage category: III
• Number of electrical maneuvers: 10,000
• Number of mechanical maneuvers: 20,000
• Rigid cable section: <=1x35 - <=2x16 - <=1x16+2x10 mm²
• Flexible cable section: <=1x35 - <=2x16 - <=1x16+2x10 mm²
• Nominal tightening torque: 2 Nm
• Operating temperature: -25 - +40 degrees
• Storage temperature: -40 - +70 degrees
• Compatibility with electrical auxiliaries
• Compatibility with ReStart
• Mounting position: any