Abb 20A 4P 30mA AC 6KA Residual current circuit breaker DS3NC20AC30

The residual current circuit breakeris 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 residual current circuit breakeris, therefore, a system that combines the functions of the circuit breaker with magnetic and thermal features.

 

The residual current circuit breakerin 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 power supply (e.g., more than one appliance in operation);
• the differential one proper to the circuit breaker, which protects the subject from a current leakage
  
   

Curve C, 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 differential circuit breaker the tripping is assured for suddenly or slowly increasing applied sine-sine differential alternating currents (IEC EN 61008-1).

 

The DS203C differential circuit breaker is a 3P+N device in 4 modules for protection of circuits against overload and short circuit; available with trip curves B and C and rated currents up to 32A it allows protection against the effects of alternating sine wave currents (type AC) sine wave and continuous currents with pulsating components (Type A) also in a version resistant to untimely trips (APR).

 

Features:

• Reference standards: IEC 61009-1 - IEC 61009-2-1 - EN 61009-1 - EN 61009-2-1
• Rated operating voltage: according to IEC 60898-1 415 V
• Rated insulation voltage (Ui): according to IEC/EN 60664-1 500 V
• Rated extreme short-circuit capacity (Icu): 10 kA
• Rated conditional short-circuit current (Inc): 10 kA
• Rated short-circuit breaking capacity, in % of Icu (Ics): 6 kA
• Maximum peak current: 0.25kA
• Rated frequency (f): Sampling frequency: 50 60 Hz
• Power loss: 11.8 W
• Energy limitation class: 3
• Electrical resistance: 10000 cycle (i)
• Mechanical resistance: 20000 cycle (i)
• Overvoltage category: III
• Position of neutral terminals: Right
• Grounding disconnect type: Without delay
• Available Accessories: Yes
• Connection capacity: Distribution rod 10 mm² - Rigid 25 ... 25 mm² - Flexible 25 ... 25 mm²
• Nominal cross-section: 1 - Solid core 25 25 mm² - 4 - Multi-Wired 1 25 mm²
• Ambient temperature: In operation -25 55 °C
• Degree of protection: IP2X
• Pollution degree: 2
• Dimensions: Product width: 0.071 meters - Product height: 0.085 meters - Product depth: 0.069 meters
• Product net weight: 0.480 kg
• Built-in depth (t2): 69 millimeters.