Hager Circuit Breakers

In modern electrical distribution systems, from commercial panels to industrial switchboards, the correct selection of breakers and modular devices is foundational. The Hager breakers and DIN‑rail modular devices category covers Hager circuit breakers, Hager RCD and MCB, Hager surge protection devices, and the wider Hager DIN‑rail modular equipment including busbars, auxiliary contacts and modular accessories. In my project work I’ve seen that mistaking the breaker rating or incompatible modular gear causes costly delays, board re‑wiring or reduced safety margins. Specifying the right Hager devices early streamlines procurement, simplifies servicing and ensures long‑term reliability.

Hager Circuit Breakers – Primary Protection for Panels

When you’re building or upgrading an electrical distribution board, you’ll specify Hager circuit breakers for overload and short‑circuit protection. For example, the Hager MCN320 3‑pole 20 A breaker with 6 kA short‑circuit breaking capacity is listed in the Hager modular devices catalogue. 
From installation practice: you’ll need to check the rated current (In), the curve class (B, C, D), the short‑circuit breaking capacity (Icn), number of poles (1P, 2P, 3P, 4P), DIN‑rail mounting format, connection terminals, and whether it fits the consumer unit depth. Hager’s modular DIN‑rail‑mounted devices are described in their catalogue as “available with classic screw‑type and QuickConnect connection technology, saving up to 40% installation time.”
Ensuring you pick the correct breaker prevents nuisance trips, ensures safety under fault conditions, and improves maintainability over the board’s lifecycle.

Hager RCD & MCB – Residual‑Current Protection and Combined Protection

For equipment and circuits where you need protection against earth faults, you’ll use Hager residual‑current devices (RCDs) and miniature circuit breakers (MCBs) in modular format. Hager’s “Modular Circuit Protection Devices and Accessories” range lists MCBs, RCBOs (residual‑current breakers with over‑current protection), RCCBs (RCDs) and accessories. 
From a specification viewpoint: you’ll check the rated residual current (IΔn, e.g., 30 mA), the curve type, whether it’s Type A or Type AC (for modern loads), number of poles, compatibility with consumer‑unit busbars, and whether the device supports auxiliary contacts or lock‑out. Choosing Hager RCDs/MCBs aligned with your panel system ensures the right level of protection, regulatory compliance and simpler spare‑part logistics.

Hager Surge Protection Devices – Protecting the Board from Over‑Voltage and Transient Spikes

In many installations, especially commercial or industrial, protecting sensitive equipment is just as critical as protecting circuits. Hager surge protection devices (SPDs) stand guard against transient over‑voltage arising from lightning strikes, switching surges or grid events. The modular DIN‑rail product range includes SPDs and accessories as part of Hager’s protection portfolio.
In practical planning: you’ll add SPDs at the distribution board, check their class (Type 1, 2, 3), the nominal discharge current (In), the voltage protection level (Up), and ensure the modules fit your DIN‑rail layout and coordinate with the upstream breaker. Specifying Hager surge devices ensures your board has a full protective cascade, rather than just circuit‑protection alone.

Hager DIN‑Rail Modular Equipment & Accessories – The Backbone of Modern Boards

Beyond individual protection devices, the category of Hager DIN‑rail modular devices and modular accessories includes busbars, rail‑mounted kit, auxiliary contacts, signalling modules, neutral links, and mounting accessories. Hager’s catalogue emphasises that their DIN‑rail‑mounted devices are part of a larger system of switching and signalling, protection and measurement.
From procurement perspective: you’ll ensure your board design includes space for busbars, spare modules, future expansion, consistent mounting depth, and compatible mounting hardware. Using Hager’s modular equipment ensures standardised footprint, ease of service and coherent spare‑stock across your installations.

Procurement & Buying Insights for Wholesale / Panel‑Builder Buyers

When buying Hager breakers and DIN‑rail modular gear for wholesale or for panel‑building programmes, procurement teams and specifiers typically compare:

• Current rating and curve class of breakers (e.g., 16 A vs 63 A, B‑curve vs C‑ or D‑curve)
• Number of poles and breaking capacity (e.g., 6 kA or higher) — many Hager breakers list 6 kA breaking capacity.
• Residual‑current device type, rated residual current, compliance with relevant standards (IEC/EN 61009, 61008)
• Coordination between breakers, RCDs and SPDs (cascade protectio
• DIN‑rail footprint, connection type (screw vs QuickConnect), rail compatibility, device spacing
• Accessories, future spares, bus‑link kits, auxiliary contacts, signalling modules
• Stock availability, lead‑time, variant reduction (choosing fewer curves/ratings reduces stock SKUs)
• Brand consistency: using Hager across breakers, modular devices and accessories simplifies documentation, spares and service training

From direct installation experience: a board build was delayed because the consumer‑unit busbar kit was missing and the breakers were from multiple brands with different widths — this forced a redesign. Standardising on Hager modular devices prevented that scenario.

Closing Note on Supply

Bank of Lamps supplies the full Hager breakers and DIN‑rail modular devices range—including circuit breakers, RCD/MCB modules, surge protection devices, DIN‑rail modular equipment and accessories—from our central warehouse in Latvia. We service B2B clients, panel‑builders, system integrators and electrical contractors across the UK, Germany, Netherlands, Baltics, France, Spain and Belgium. With strong stock levels, flexible bulk order quantities and logistics organised for panel‑build timelines, you can focus on wiring and commissioning rather than supply bottlenecks.