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ABB SD202/40

The ABB SD202/40 is a high-performance 2-pole switch disconnector from the prestigious System pro M compact SD201 series, specifically engineered for precise electrical isolation. Designed for 1-phase + Neutral configurations, this 40A unit provides a robust manual toggle interface for demanding industrial and commercial DIN rail environments. Manufactured in Italy, it combines a high-grade thermoplastic housing with an AC-23A utilization category, making it an essential component for safe load switching at 400V.

Quick Answer

The ABB SD202/40 is primarily used as a main isolator in residential and commercial distribution boards to safely disconnect the power supply for maintenance or emergency stops in 40A circuits.

✓40A Rated Current with 400V AC operating voltage capacity.
✓2-Pole (1P+N) configuration for simultaneous phase and neutral isolation.
✓AC-23A Utilization Category for switching highly inductive motor loads.
✓Italian-engineered thermoplastic housing with IP40 protection rating.
✓Full compatibility with the System pro M compact DIN rail ecosystem.

Choose the ABB SD202/40 if you require a premium, Italian-made 40A isolator for a 2-pole setup that fits standard DIN rail distributions. It is the ideal choice for professionals who prioritize the reliability of the ABB System pro M ecosystem and need a switch rated for inductive (AC-23A) load switching.

✓ Who Should Buy

  • •Electricians installing 1-phase + Neutral sub-panels in commercial properties.
  • •Facility managers upgrading to ABB System pro M compact distribution boards.
  • •Panel builders requiring a certified 40A switch disconnector for motor-heavy environments.

✕ Who Should Avoid

  • •Users looking for a device with built-in circuit breaker (MCB) protection functionality.
  • •Applications requiring a 3-phase (3 or 4 pole) isolation solution.
Product Overview
The ABB SD202/40 represents the pinnacle of switch-disconnector technology within the System pro M compact range. This model is specifically designed to act as a master control switch in sub-panels or as a primary isolator for heavy-duty appliances. Unlike standard switches, the SD202 series is built to handle the rigors of frequent switching under load, ensuring long-term reliability in both TN and TT earthing systems. Crafted in Italy, the SD202/40 features a clear manual toggle mechanism that provides positive contact indication. While it is a non-automatic switch—meaning it does not provide overcurrent or short-circuit protection—it boasts a 10kA breaking capacity when used in conjunction with appropriate upstream protection. Its compact DIN rail design allows for seamless integration into modern modular consumer units.

BrandABB
Model NameSD202/40
TypeMain Switch Disconnector
SeriesSystem pro M compact SD201
Housing MaterialThermoplastic
Country Of OriginItaly
Release Year2005

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Engineering Analysis
The engineering architecture of the SD202/40 focuses on contact efficiency and thermal management. The screw terminals are designed for high-torque tightening to minimize contact resistance, which is vital for a 40A continuous load. The internal mechanical linkage is optimized for a 'snap-action' feel, reducing the time the contacts spend in the transition phase, thereby extending the electrical life of the device. Furthermore, the 2-pole setup is essential for ensuring that the neutral path is disconnected alongside the live wire, preventing potential back-feed issues during maintenance.

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