Circuit breakers 100A

100A MCB for High-Capacity Distribution Panels in B2B Projects

The 100a mcb (miniature circuit breaker) marks the upper end of standard DIN-rail protection before moving into molded-case breaker (MCCB) territory. This amperage is ideal for sub-distribution in large commercial buildings, light industrial zones, and infrastructure nodes that require robust overload and short-circuit protection — but without oversizing the protection frame.

At Bank of Lamps, we offer wholesale access to certified 100a circuit breaker models from trusted EU brands, with flexible supply formats and fast logistics across Europe.

Where 100A Circuit Breakers Fit Best

MCBs at this rating are typically used for:

• Floor-level distribution boards in office towers, hospitals, and airports
• Large HVAC control units with motor-driven loads (fans, chillers, compressors)
• Machine rooms and corridor panels in industrial kitchens, laundries, or warehouses
• Photovoltaic installations with combiner boxes and surge-protected strings
• Main breaker function in smaller residential or commercial sub-panels

While technically still MCBs, 100a models approach the lower limits of MCCBs in performance and are often used where MCCBs are not needed but reserve is still required.

100A MCB Brands and Technical Options

We supply 100a mcb models across several high-reliability brands:

• Schneider Electric (Acti9 iC60H/NG125) — 10–25 kA breaking capacity, C/D curves
   
• ABB S290 / S800 series — up to 100A thermal-magnetic breakers, compact width
   
• Eaton PL7 / FAZ series — type-tested for DIN-rail mounting with optional add-ons
   
• Hager MBS / MBH series — reinforced terminals, 3P+N and 1P+N variants
   
• Legrand DX³ — modular protection with accessory slots (aux contacts, shunt trip)

Most models offer IEC 60898-1 (domestic/commercial) or IEC 60947-2 (industrial) certification. Breaking capacities range from 10kA to 25kA depending on use case.

Variants available:

• 1-pole, 2-pole, 3-pole, and 4-pole (3P+N)
   
• C-curve (for resistive or moderate inductive loads)
   
• D-curve (for high inrush applications like motors or transformers)
   
• Optional connection with RCD/RCCB units
   
• Top and bottom feed compatibility for flexible wiring

Wiring, Safety, and System Integration

For B2B installers and planners, choosing a 100a circuit breaker requires attention to:

• Conductor size — typically 25–35 mm² for copper; up to 50 mm² for aluminum
• Rail compatibility — standard 35 mm DIN, tool-free clip-in for most brands
• Thermal derating — 100A models may need spacing or ventilation in warm enclosures
• Auxiliary equipment — voltage trip modules, busbar compatibility, lock-out kits
• Labeling and documentation — QR-coded stock for easier inventory traceability on site
   

We offer downloadable datasheets, torque tables, and installation guides for all stocked brands — useful for project folders and EPC compliance audits.

Why Order 100A MCBs from Bank of Lamps

We are a dedicated B2B distributor serving procurement teams and installers across the EU with:

• Access to live warehouse stock from 96+ certified brands
   
• Orders from 20 pcs up to full pallet — mix by amperage, pole, or brand
   
• 5,100 m² bonded logistics hub with daily dispatches across Germany, France, Spain, Benelux, UK
   
• Full documentation packs and spec sheets for compliance reporting
   
• No retail markup, no consumer packaging — only trade-ready equipment
   
• Long-term availability support for phased site rollouts

With over €15M in active inventory, our team ensures your 100a mcb supply is stable, traceable, and ready for structured integration.