LV Control & Signalling

Low-Voltage Control and Signalling Components

LV control and signalling is the everyday hardware of every control panel: contactors, overload relays, manual motor starters (MPCBs), plug-in and interface relays, timers, monitoring relays, pushbuttons, selector switches and pilot lights, and beacons, signal towers and sounders.

LED Controls Ltd holds deep stock from ABB, Lovato Electric, Finder, Emas, Carlo Gavazzi, IMO, Chint and Pizzato. Filter by brand and rating, and use the range list above to jump straight to the component type you need.

Low-Voltage Control and Signalling Components

Beacons, Towers & Sounders
562 Products

Signal towers, beacons and sounders show machine status at a glance and alert operators to faults. We stock Pfannenberg and Emas LED beacons and sounders, Lovato Electric LTN modular signal…

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Contactor
5,658 Products

Contactors switch motors, heaters and lighting loads under PLC or pushbutton control. LED Controls Ltd stocks the ABB AF and A-series, Lovato Electric BF, Chint NC1, IMO and Emas contactor…

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Control & Signalling Accessories
315 Products

Control and signalling accessories are the spares and add-ons that complete pushbutton stations, limit switches and manual motor starters: contact blocks, LED lamp holders and legend plates for 22 mm…

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Electronic Compact Starter
45 Products

Electronic compact starters combine contactor, overload and reversing functions in one DIN-rail unit controlled directly from a PLC output, saving panel space and wiring on small motors. This range stocks…

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Monitoring Relays
602 Products

Monitoring relays watch a supply or process and switch a contact when it goes out of bounds – phase loss and sequence, over/under-voltage, current, frequency, temperature (PTC) and liquid level.…

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MPCB - Manual Motor Starter
372 Products

A manual motor starter or MPCB protects a motor against overload and short circuit in a single device, with an adjustable thermal setting and manual on/off. This range covers the…

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Overload Relay
333 Products

Overload relays mount directly on a contactor and trip it if the motor draws more than its rated current for too long. We stock thermal and electronic overloads from ABB,…

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Relays
3,747 Products

Relays isolate and multiply control signals between PLCs, sensors and field devices. This is one of our largest ranges: Finder plug-in and slim interface relays, Carlo Gavazzi solid-state relays, Lovato…

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Rotary Cam Switches
724 Products

Rotary cam switches for on-off, changeover, motor-reversing, step and selector duties, in front-panel, door and enclosed versions from Emas, Lovato, IMO and ABB.

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Time Relays
399 Products

Time relays add on-delay, off-delay, interval, flasher and star-delta timing to a control circuit without a PLC. We stock Finder multifunction and modular timers, Carlo Gavazzi and Emas timers, Lovato…

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Choosing the Right Control and Signalling Components

Every control panel is built from the same building blocks: switching devices to control loads, relays to handle logic and protection, and pushbuttons and indicators for the operator. Choosing the right rating and type for each keeps the panel reliable and compliant.

Contactors

Contactors switch motors, heaters and lighting under PLC or pushbutton control. Rated by AC-3 motor current or AC-1 resistive current with the right coil voltage.

  • Motor starters
  • Heating control
  • Lighting
  • Capacitor switching
  • Changeover
Learn More →
Relays

Plug-in, interface and solid-state relays isolate PLC outputs, multiply contacts and switch small loads reliably millions of times.

  • PLC output isolation
  • Signal switching
  • Interlocks
  • Heater control (SSR)
  • Interface
Learn More →
Pushbuttons & Indicators

22 mm pushbuttons, selectors, emergency stops and pilot lights are how the operator controls and reads the machine.

  • Start/stop control
  • Emergency stop
  • Mode selection
  • Status indication
  • Enclosure doors
Learn More →
FeatureContactorInterface RelayOverload Relay
FunctionSwitch power loadsSwitch signals / small loadsMotor overload protection
Typical Rating6 A – 800 A AC-36 A – 16 ASet to motor FLC
StandardIEC 60947-4-1IEC 61810IEC 60947-4-1
MountingDIN rail / screwDIN rail socketDirect to contactor
Typical ApplicationsMotors, heaters, lightingPLC I/O, interlocksMotor starters

Control and Signalling by Application

Explore common panel-building applications and the control gear and signalling products we recommend for each.

Motor Starters

Contactor, overload relay and manual motor starter combinations for direct-on-line motor control and protection.

PLC Interfacing

Interface relays and solid-state relays protect PLC outputs and drive coils, valves and small loads.

Recommended Products
Machine Status Indication

Signal towers, beacons and sounders show machine state across the shop floor at a glance.

Operator Controls

Pushbuttons, selector switches, emergency stops and pilot lights for door-mounted operator stations.

Recommended Products
Monitoring & Protection

Phase, voltage, current and level monitoring relays trip or alarm before a fault becomes damage.

Timing & Sequencing

On-delay, off-delay, star-delta and multifunction timers for simple sequences without a PLC.

Recommended Products

Trusted Control and Signalling Manufacturers

We hold deep stock of control gear and signalling from manufacturers panel builders have relied on for decades.

Lovato Electric

Lovato contactors, overload relays, manual motor starters, timers and monitoring relays offer a complete, competitively priced control gear range.

Explore Lovato Electric Products →
ABB

ABB AF contactors, TF overload relays and MS manual motor starters are specified worldwide for reliable motor control.

Explore ABB Products →
Finder

Finder plug-in, interface and solid-state relays, timers and sockets are the standard for PLC interfacing and control logic.

Explore Finder Products →
Pizzato

Pizzato pushbuttons, pilot lights, signal towers and control stations combine robust construction with a wide operator range.

Explore Pizzato Products →

Looking for Another Manufacturer?

In addition to Lovato Electric, ABB, Finder and Pizzato, we supply products from over 40 leading industrial automation manufacturers, helping engineers source everything they need from one trusted supplier.

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Frequently Asked Questions

Common questions about contactors, relays and operator controls. Our technical team can help with ratings and cross-references.

What is the difference between AC-1 and AC-3 contactor ratings?
AC-1 is the rating for resistive loads such as heaters; AC-3 is the rating for switching cage motors, which draw a high inrush and must be interrupted at running current. Always size a motor contactor on its AC-3 rating.
Do I need an overload relay with every contactor?
For a motor, yes: the overload relay protects the motor from overcurrent, and the contactor does the switching. Alternatively a manual motor starter combines short-circuit and overload protection in one device.
When should I use a solid-state relay instead of an electromechanical relay?
Use a solid-state relay for fast, frequent switching such as heater temperature control, or where silent, arc-free operation matters. Use an electromechanical relay where you need galvanic isolation, multiple contacts or low leakage.
What does a monitoring relay do?
A monitoring relay watches a parameter such as phase sequence, voltage, current, level or temperature and switches an output when it leaves set limits, protecting motors and equipment from damaging conditions.
Are your emergency stop buttons compliant?
Yes. Emergency stop pushbuttons are supplied to IEC 60947-5-5 with mechanical latching and positive-opening contacts, and can be combined with a safety relay to meet ISO 13850 and ISO 13849-1 requirements.
Which control gear brands does LED Controls supply?
We supply Lovato Electric, ABB, Finder, Pizzato, Emas, Carlo Gavazzi, IMO and Chint.
Do you offer trade accounts?
Yes. Trade accounts are available for panel builders, OEMs, contractors and industrial customers with competitive pricing and account management.
Do you provide technical support after purchase?
Yes. Our team can help with ratings, cross-references and replacements before and after purchase.

Why Businesses Choose LED Controls

From single replacement components to complete control gear 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 control gear solution for your project.

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Fast UK Delivery

Thousands of control gear 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 Control Gear?

Whether you are building a motor starter, interfacing a PLC or fitting out an operator station, our experienced technical team is here to help you select the right components.

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