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Switchgear & Circuit Protection
Switchgear and Circuit Protection
Switchgear and circuit protection covers every device that switches, isolates and protects a low-voltage installation: MCBs, RCDs and RCBOs, moulded-case and air circuit breakers, switch disconnectors, enclosed rotary isolators, switch fuses, fuses and fuse holders, surge protection devices, changeover and automatic transfer switches and accessories.
LED Controls Ltd is a stockist for ABB (Tmax, Emax 2, System pro M compact, OT and OS ranges), Mersen, Lovato Electric, Chint, IMO and Carlo Gavazzi. Filter by brand, current rating and pole count. For DC-rated PV switchgear see Photovoltaic.
Switchgear and Circuit Protection
Switchgear and circuit protection covers every device that switches, isolates and protects a low-voltage installation: MCBs, RCDs and RCBOs, moulded-case and air circuit breakers, switch disconnectors, enclosed rotary isolators, switch fuses, fuses and fuse holders, surge protection devices, changeover and automatic transfer switches and accessories.
Most Popular Category
Shop MCCB & ACB →
MCCB & ACB
MCCBs and ACBs protect main and sub-main circuits from 16 A up to 6300 A. LED Controls Ltd stocks the ABB Tmax XT moulded-case range with thermal-magnetic and Ekip electronic trip units, the ABB Emax 2 air circuit breaker family, Chint NXM and NM8 MCCBs and Lovato Electric MCCBs, plus rotary handles, shunt trips, auxiliary contacts and mounting accessories.
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Products Available
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Brands Stocked
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Change-Over & ATS
541
Products
Changeover switches transfer a load between two supplies – mains and generator, or two mains feeds. We stock ABB OTM motorised and ABB OT manual changeover switches, ABB automatic transfer…
Shop Change-Over & ATS →Circuit Protection
9,598
Products
Circuit protection devices guard final circuits against overload, short circuit and earth-leakage faults. This range stocks ABB System pro M compact S200 MCBs, DS200 RCBOs and F200 RCDs, Mersen fuses…
Shop Circuit Protection →Enclosed Switch Disconnect
948
Products
Enclosed switch disconnectors give local, lockable isolation at a machine or motor, ready to mount and wire. We stock ABB OTP enclosed switches, Lovato Electric GAX and IMO IP65 rotary…
Shop Enclosed Switch Disconnect →Fuse Protection
6,228
Products
Fuse protection remains the simplest way to protect control circuits and semiconductors. This range stocks Lovato Electric FB modular fuse holders for 10 × 38 and 14 × 51 cartridge…
Shop Fuse Protection →Fused Disconnect
773
Products
Switch fuses combine isolation and fuse protection in one operating mechanism, commonly used as incomers and motor-circuit isolators. We stock the ABB OS range of front-operated switch fuses from 32…
Shop Fused Disconnect →Surge Protection Device
560
Products
Surge protection devices divert lightning-induced and switching transients to earth before they reach sensitive equipment. This range stocks Mersen Type 1, Type 2 and Type 1+2 SPDs and Modulostar fuse…
Shop Surge Protection Device →Switch Disconnect
1,073
Products
Switch disconnectors provide safe isolation for maintenance, from 16 A DIN-rail isolators to 6300 A air-break switches. We stock ABB OT and Emax 2 /MS switch disconnectors, Lovato Electric GA…
Shop Switch Disconnect →Switchgear Accessories
6,055
Products
Switchgear accessories adapt and extend breakers and switches: rotary and door-coupling handles, shunt and undervoltage releases, auxiliary and alarm contacts, metering and protection modules for ABB Emax 2, terminal covers,…
Shop Switchgear Accessories →Choosing the Right Switchgear and Circuit Protection
Protecting a circuit means choosing a device that clears faults quickly at the available fault level while letting the load run normally. MCBs, MCCBs and fuses each have their place, and switch disconnectors provide the isolation needed for safe maintenance.
MCBs & RCDs
Miniature circuit breakers, RCDs and RCBOs protect final circuits up to 125 A against overload, short-circuit and earth leakage.
- Final circuits
- Control power
- Lighting
- Socket outlets
- Small motors
MCCBs & ACBs
Moulded-case and air circuit breakers protect feeders, incomers and large loads from 16 A to 6300 A with adjustable trip settings.
- Incomers
- Feeders
- Large motors
- Generators
- Switchboards
Switch Disconnectors
Switch disconnectors and fused switches provide load-break isolation for maintenance, with padlockable handles and door interlocks.
- Machine isolation
- Local isolators
- Panel incomers
- Maintenance switching
- Changeover
| Feature | MCB / RCBO | MCCB | Fuse |
|---|---|---|---|
| Current Range | 0.5 A – 125 A | 16 A – 1600 A+ | 2 A – 1250 A+ |
| Trip Adjustment | Fixed (B, C, D curve) | Adjustable thermal/magnetic or electronic | Fixed characteristic |
| Breaking Capacity | 6 – 25 kA | 25 – 150 kA | Up to 120 kA |
| Resettable | Yes | Yes | Replace |
| Typical Applications | Final circuits | Feeders, incomers | Motor & semiconductor protection |
Switchgear by Application
Explore common distribution and protection applications and the switchgear products we recommend for each.
Main Incomers & Switchboards
MCCBs, ACBs and switch disconnectors for incoming supplies and main distribution.
Recommended Products
Final Circuit Protection
MCBs, RCDs and RCBOs for lighting, socket and control circuits in panels and distribution boards.
Recommended Products
Machine Isolation
Door-interlocked and enclosed switch disconnectors for safe local isolation of machines.
Recommended Products
Motor & Drive Protection
Semiconductor and gG fuses in fused disconnectors protect drives, soft starters and motor circuits.
Recommended Products
Standby Generation
Automatic and manual changeover switches to transfer between mains and generator supplies.
Recommended Products
Surge Protection
Type 1, 2 and 3 SPDs protect installations and sensitive electronics from lightning and switching transients.
Recommended Products
Trusted Switchgear Manufacturers
We supply circuit protection and switching from manufacturers whose devices are type-tested and specified in switchboards worldwide.
ABB
ABB Tmax MCCBs, Emax ACBs, System pro M MCBs and OT switch disconnectors cover every level of low-voltage protection and isolation.
Explore ABB Products →Mersen
Mersen fuses, fuse holders and surge protection devices protect drives, semiconductors and installations across industrial and renewable applications.
Explore Mersen Products →Lovato Electric
Lovato switch disconnectors, changeover switches and fuse holders offer reliable isolation at competitive prices.
Explore Lovato Electric Products →IMO
IMO MCBs, RCDs, MCCBs and enclosed isolators give panel builders cost-effective, readily available protection.
Explore IMO Products →Looking for Another Manufacturer?
In addition to ABB, Mersen, Lovato Electric and IMO, we supply products from over 40 leading industrial automation manufacturers, helping engineers source everything they need from one trusted supplier.
View All ManufacturersFrequently Asked Questions
Common questions about circuit protection and switchgear. Our technical team can help with discrimination, fault levels and cross-references.
What is the difference between an MCB and an MCCB?
What breaking capacity do I need?
The device must be rated at or above the prospective fault current at its point of installation. Typical values are 6–10 kA for domestic and small commercial boards, 15–25 kA for industrial panels and higher at main switchboards. We can help you check.
When should I use a fuse rather than a breaker?
Use fuses where you need very fast clearing to protect semiconductors in drives and soft starters, very high breaking capacity, or the simplest reliable back-up protection. Breakers are preferred where resetting without spares matters.
What is the difference between a switch disconnector and a circuit breaker?
A switch disconnector provides isolation and load switching but no overcurrent protection. A circuit breaker protects and may also be rated for isolation. Many machines use a padlockable switch disconnector as the local isolator with protection upstream.
Do I need surge protection?
BS 7671 requires a risk assessment and, in most commercial and industrial installations, a Type 2 SPD at the origin, with Type 1 where there is an external lightning protection system and Type 3 close to sensitive equipment.
Which switchgear brands does LED Controls supply?
We supply ABB, Mersen, Lovato Electric, IMO, Chint, Carlo Gavazzi and Rittal.
Do you offer trade accounts?
Yes. Trade accounts are available for panel builders, switchgear manufacturers, electrical contractors and industrial customers.
Do you provide technical support after purchase?
Yes. Our team can help with ratings, discrimination and replacements before and after purchase.
Why Businesses Choose LED Controls
From single replacement components to complete switchgear solutions, businesses across the UK trust LED Controls for expert advice, leading brands and dependable customer service. Our experienced team supports customers throughout every stage of their project, from specification through to delivery.
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Industry Partnerships
As an ABB Value Provider and Danfoss Authorised Partner, we supply genuine products backed by manufacturer expertise and support.
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Technical Expertise
Our knowledgeable team can assist with product selection, application advice and identifying the most suitable switchgear solution for your project.
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Fast UK Delivery
Thousands of switchgear products are available for fast dispatch, helping minimise downtime and keep your projects moving.
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Trusted by Industry
We support OEMs, panel builders, machine manufacturers, system integrators and maintenance engineers across a wide range of industrial sectors.
Need Help Specifying Circuit Protection?
Send us your load schedule and fault levels and our technical team will recommend the breakers, fuses, isolators and surge protection to build a compliant switchboard or panel.
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