ABB SH203-C20 MCB 20A 3-Pole 6kA Type C

ABB SH203-C20 three-pole miniature circuit breaker delivers reliable protection for 400 V AC circuits in UAE installations. With a 20 A rating and 6 kA breaking capacity, it fits standard DIN-rail panels and supports a wide range of accessories for remote control and monitoring.

Key Features

• Three-pole design for balanced three-phase protection
• Current rating: 20 A; Voltage: 400 V AC
• Breaking capacity: 6 kA (Icu) at 400 V AC
• DIN rail mounting for compact, space-saving installations
• Type C tripping curve for general-purpose protection of commercial and light industrial circuits
• Wide accessory compatibility for remote control and monitoring

Technical Specifications

Applications

• Three-phase distribution panels in commercial and residential buildings
• Motor protection for light industrial equipment
• Panel boards in UAE electrical installations
• Marine and railway panels where appropriate installation standards are met

FAQ

• What's the difference between an MCB and an RCCB/RCD?
  An MCB (miniature circuit breaker) protects wiring and connected equipment against overload and short-circuit current. An RCCB/RCD protects against earth leakage by monitoring current imbalance. The two are complementary and are normally installed together in a distribution board.
• What does the Type C tripping curve mean?
  Type C trips at 5–10x rated current, giving enough headroom for motors, transformers, and ballast/LED-driver inrush without nuisance tripping.
• What does the 6kA breaking capacity mean?
  6kA is the maximum fault current this MCB can safely interrupt without damage. It should be equal to or higher than the prospective fault current at its installation point in the board.
• How many poles do I need?
  A 3-pole (3P) breaker switches all three phases on a three-phase circuit without a switched neutral.
• Is this MCB compatible with other ABB DIN-rail distribution boards?
  Yes — it's a standard DIN-rail (EN 60715) mounted breaker and clips directly into ABB's modular consumer units and distribution boards alongside other ABB DIN-rail devices.
• Can I install this myself?
  No. This is a distribution board component and must be installed and connected by a licensed electrician in accordance with UAE wiring regulations — it is not a DIY consumer product.