Circuit breakers 40A

40A MCB Units for Power-Hungry Loads and Three-Phase Panels

The 40a mcb is designed for circuits with higher continuous loads — such as three-phase HVAC systems, rooftop solar arrays, small commercial kitchens, and EV charging stations. With a solid 6–10 kA breaking capacity and compatibility with modular DIN boards, this breaker class is the preferred option for installers balancing safety, longevity, and compliance.

Bank of Lamps supplies 40a circuit breaker models from verified European brands including ABB, Schneider Electric, Legrand, Hager, ETI, and Doepke. All products ship directly from our 5,100 m² EU warehouse, with reliable logistics across Germany, France, Spain, the Baltics, Benelux, and the UK.

Application Areas for an MCB 40A

An mcb 40a is typically used in:

• 3-phase HVAC compressors or rooftop ventilation units
• Wall-mounted EV chargers and charge hubs (up to 9.6 kW)
• Commercial kitchen blocks — including combi ovens or steamers
• Distribution boards for industrial tools, lifts, or pumps
• Subpanels feeding multiple 16A–32A lines

We offer curve B and C options depending on load profile. C-curve is standard for inductive applications, while B-curve covers resistive installations. Some projects also opt for selective MCBs with 10kA+ capacity when upstream breakers require time-delay selectivity.

Technical Specs and Breaker Options

Most stocked 40a mcb products include:

• 1P, 1P+N, 3P, 3P+N configurations
• Breaking capacities: 6 kA (standard), 10 kA (industrial)
• Terminal types: screw, lift-clamp, or push-in
• Mounting width: 18 mm (single pole), up to 72 mm (4-pole)
• Operating temp: -25°C to +60°C
• Conformity: EN 60898-1, IEC 60947-2, CE, RoHS

Top-selling models include:

• ABB S203-C40 – 3P, 10kA, robust housing
   
• Hager MBS340C – compact C-curve, tool-free mount
• Schneider Electric Acti9 iC60N C40 – auxiliary-ready, wide accessory range
• Legrand DX³ C40 – dual terminal format, UL + CE labels
• ETI C40/3 – economical option for bulk deployment

All units can be supplied in standalone format or as part of pre-assembled DIN modules.

Why Choose Bank of Lamps for MCB 40A Supply

• Over 96 EU-certified brand partnerships
   
• Flexible quantities — from 5 pcs to full board rollout
   
• Mixed delivery sets: 40A + 32A + 25A per site layout
   
• Full CE and IEC documentation, plus VDE sheets where needed
   
• 5,100 m² logistics with 10+ EU carriers, live stock sync
   
• Technical account manager assigned per B2B client

We’ve delivered over 1 million breakers for HVAC, charging stations, and panel assemblies since 1997. Our team knows where a 40a circuit breaker fits best — and how to get it there on time, with zero surplus.