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Transformers & PSU
Transformers and Power Supplies
Transformers and power supplies deliver the control voltages a panel runs on. LED Controls Ltd stocks 24 V DC switch-mode power supplies from Mean Well, Carlo Gavazzi, IMO and Lovato Electric, control transformers and voltage transformers from ETE and Carlo Gavazzi, DC UPS and battery chargers, and power transducers.
Filter by output voltage and power. Current transformers for metering are under Energy Management.
Transformers and Power Supplies
Transformers and power supplies deliver the control voltages a panel runs on. LED Controls Ltd stocks 24 V DC switch-mode power supplies from Mean Well, Carlo Gavazzi, IMO and Lovato Electric, control transformers and voltage transformers from ETE and Carlo Gavazzi, DC UPS and battery chargers, and power transducers.
Most Popular Category
Shop Transformer →
Transformer
This range covers control circuit transformers that derive 24 V, 110 V or 230 V control supplies from the mains – ETE Class II single-phase units from 50 VA upwards – alongside Carlo Gavazzi three-phase current transformers for measurement, and units from ABB, Chint and Lovato Electric.
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Products Available
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Brands Stocked
Fast
UK Delivery
DC UPS & Battery Backup
18
Products
A DC UPS keeps 24 V control circuits, PLCs and communications alive through a mains dip or outage. This range covers Lovato Electric BCE battery chargers, ETE battery modules and…
Shop DC UPS & Battery Backup →Electronic Circuit Breaker
14
Products
Electronic circuit breakers protect individual 24 V DC branches downstream of a power supply, tripping selectively so one fault does not take down the whole control circuit. This category is…
Shop Electronic Circuit Breaker →Power Supply
288
Products
A reliable 24 V DC power supply underpins every modern control panel. We stock DIN-rail switch-mode supplies from Mean Well, Carlo Gavazzi, IMO, Lovato Electric, ABB and Finder from 15…
Shop Power Supply →Voltage Transformers
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Products
Voltage transformers step 230 V or 415 V down to a safe control voltage, typically 24 V, for contactor coils, pilot lights and instruments. We stock ETE encapsulated and open-frame…
Shop Voltage Transformers →Choosing the Right Power Supply or Transformer
Control circuits need a stable, correctly rated supply. Whether that is a 24 V DC switch-mode power supply, a control transformer or a UPS-backed supply depends on the loads, the inrush they draw and how the system must behave when mains power is lost.
Power Supplies
DIN rail switch-mode power supplies convert mains to regulated 24 V DC (or 12/48 V) for PLCs, sensors, relays and HMIs.
- PLC & I/O power
- Sensor supplies
- Relay coils
- HMIs
- Solenoid valves
Control Transformers
Single-phase control and isolating transformers step 400/230 V down to 110 V or 24 V AC for control circuits and site tools.
- 110 V control circuits
- Contactor coils
- Site tool supplies
- Isolation
- Lighting
DC UPS & Battery Backup
DC UPS modules and buffer units keep 24 V DC systems running through mains dips and outages so controllers shut down cleanly or ride through.
- PLC ride-through
- Safe shutdown
- Alarm systems
- Remote sites
- Data logging
| Feature | Switch-Mode PSU | Control Transformer | DC UPS |
|---|---|---|---|
| Output | Regulated DC (12/24/48 V) | AC (110/24 V) | Backed-up DC |
| Efficiency | 90 – 95 % | 85 – 95 % | N/A (adds backup) |
| Regulation | Tight ±1 % | Load dependent | As PSU |
| Inrush Handling | Power boost on many models | Excellent | As PSU |
| Typical Applications | PLC, sensors, relays | 110 V control, tools | Critical 24 V systems |
Power Supplies and Transformers by Application
Explore common control-power applications and the products we recommend for each.
PLC & Control Panels
24 V DC power supplies sized for the PLC, I/O, relays and sensors, with redundancy modules where uptime matters.
Recommended Products
110 V AC Control Circuits
Control transformers for traditional 110 V contactor and pushbutton circuits on machinery.
Recommended Products
Critical Systems
DC UPS and battery modules to ride through dips and shut controllers down safely.
Recommended Products
Instrumentation & Metering
Voltage transformers and signal transducers to bring measurements to meters and PLC analogue inputs.
Recommended Products
Machine Power Distribution
Power supplies feeding multiple 24 V circuits through electronic protection to isolate faults.
Recommended Products
Site & Workshop
Isolating transformers providing 110 V centre-tapped-to-earth supplies for portable tools.
Recommended Products
Trusted Power Supply and Transformer Manufacturers
We supply power supplies, transformers and transducers from manufacturers with proven reliability in control panels.
Carlo Gavazzi
Carlo Gavazzi switch-mode power supplies, transducers and monitoring products are compact, efficient and widely used in machine panels.
Explore Carlo Gavazzi Products →Mean Well
Mean Well is one of the largest manufacturers of standard power supplies, offering DIN rail, enclosed and open-frame units in every rating.
Explore Mean Well Products →IMO
IMO DIN rail power supplies and control transformers offer cost-effective control power for panel builders.
Explore IMO Products →Lovato Electric
Lovato power supplies and current and voltage transformers integrate with its metering and control gear ranges.
Explore Lovato Electric Products →Looking for Another Manufacturer?
In addition to Carlo Gavazzi, Mean Well, IMO and Lovato Electric, 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 control power. Our technical team can help you size a supply for your load list.
How do I size a 24 V DC power supply?
Add up the current of everything on the 24 V rail – PLC, I/O modules, sensors, relays, HMI, valves – then add 20–30 % headroom and check the start-up inrush of any motors or lamps. Many power supplies offer a power-boost feature to cover short inrush peaks.
Should I use a power supply or a transformer for control circuits?
Use a switch-mode power supply for 24 V DC electronics, PLCs and sensors. Use a control transformer for 110 V or 24 V AC circuits with contactors and pushbuttons, or where an isolated AC supply is required.
What is a redundancy module and do I need one?
A redundancy module lets two power supplies share a load so the system keeps running if one fails. Use it where a 24 V failure would stop critical production or safety systems.
How long will a DC UPS keep my PLC running?
It depends on the load and battery capacity. Typical DC UPS modules hold a 24 V, 5–10 A load for several minutes to allow a controlled shutdown, or longer with additional battery modules. Send us your load and required time and we will size it.
What is a signal transducer?
A transducer converts a measured quantity such as AC current, voltage or frequency into a standard 4–20 mA or 0–10 V signal that a PLC analogue input or meter can read.
Which power supply brands does LED Controls supply?
We supply Carlo Gavazzi, Mean Well, IMO, Lovato Electric, ETE, ABB and Wago.
Do you offer trade accounts?
Yes. Trade accounts are available for panel builders, OEMs, contractors and industrial customers.
Do you provide technical support after purchase?
Yes. Our team can help with sizing, redundancy and replacements before and after purchase.
Why Businesses Choose LED Controls
From single replacement components to complete control power 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 power solution for your project.
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Fast UK Delivery
Thousands of control power 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 Sizing a Power Supply?
Send us your 24 V load list or control circuit details and our technical team will recommend the power supply, transformer or backup solution to match.
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