Switches for distribution boxes include MCBs, RCDs, RCBOs, isolators, and main switches, with specific models available from brands like Schneider Electric, CHINT, and Wieland.

Common Switch Types for Distribution Boxes

1. Miniature Circuit Breakers (MCBs) – Protect individual circuits from overloads and short circuits. Available in single-pole, double-pole, and triple-pole configurations.
2. Residual Current Devices (RCDs) – Detect leakage currents and prevent electric shocks. Often used alongside MCBs for combined protection.
3. Residual Current Breaker with Overcurrent Protection (RCBOs) – Combine MCB and RCD functions in a single device, saving space in compact distribution boxes.
4. Isolators / Main Switches – Provide a means to disconnect the entire distribution board for maintenance or emergency purposes.
5. Surge Protective Devices (SPDs) – Protect sensitive equipment from voltage spikes and transient surges.

Brand-Specific Models

• Schneider Electric offers low-voltage distribution switchboards and modular switches compliant with IEC standards, including MCBs, RCDs, and RCBOs suitable for residential, commercial, and industrial applications .
• CHINT provides Final Distribution Boards with modular designs, allowing integration of MCBs, RCDs, RCBOs, and isolators. Their boards are customizable for additional protection features, smart monitoring, and remote control capabilities .
• Wieland specializes in decentralized distribution boxes with pluggable installation systems. Their solutions support MCBs, RCDs, and other protective devices, optimized for energy efficiency and flexible layouts .
• Kopp offers a range of switch boxes and junction boxes for indoor and wet areas, including IP20 to IP65 rated enclosures compatible with standard switches and accessories .

Selection Considerations

When choosing switches for a distribution box, consider:

• Application type: Residential, commercial, industrial, or outdoor.
• Supply system: Single-phase, three-phase, AC/DC, and earthing system (TN, TT, IT).
• Number of circuits: Include spare ways for future expansion.
• Protection strategy: Decide between MCB, RCD, RCBO, or combination devices.
• Rated current and short-circuit capacity: Match the actual load and fault current.
• Enclosure compatibility: Ensure IP rating, material, and DIN rail space accommodate the selected switches . By matching the switch type, brand, and model to the distribution box's specifications and application requirements, you can ensure safe, reliable, and code-compliant electrical installations.