H Series — UltraFine LED Power Supply

The H Series UltraFine LED power supply is the answer to one of the most common challenges in architectural lighting: where does the driver go? At just 18mm to 23mm in height, the H Series is purpose-built to disappear inside the narrowest LED aluminium profile channels, recessed ceiling voids, slim furniture cavities and concealed trunking where no other driver will fit. Despite the compact size, high power density electronics deliver outputs from 36W up to 250W — covering everything from a short profile section to a full-length architectural run.

18mm
Min Height
60W model — thinnest in range
6
Wattages
36W to 250W
12 & 24V
Output
Both voltages available
IP20
Rated
Indoor concealed install

How Slim Is 18mm?

H Series
18mm
Standard
30–50mm

Fits Where Others Don't

Standard LED drivers measure 30–50mm in height — too tall for most LED profile channels and many false ceiling voids. The H Series 60W body is 222 × 19.5 × 18mm — thinner than a standard marker pen. It slides directly inside narrow LED aluminium profiles, sits in 20mm ceiling voids, and conceals inside the thinnest furniture cavities without a visible junction box or exposed driver body.

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Crimp Type Wiring — Faster, More Reliable Connections

The H Series uses crimp terminals rather than screw blocks. Crimped connections are mechanically more secure — they resist pull-out, vibration and oxidation over time. Pre-crimped ferrules can be prepared in advance and pushed in quickly without a screwdriver, making installation in tight spaces significantly faster and neater. Particularly valuable when routing wiring inside the narrow confines of an LED profile end cap.

Available Models

Six wattages in both 12V and 24V. The 60W model achieves the thinnest 18mm body — larger wattages step up to 23mm:

12V DC Output

VoltageWattageMax CurrentDimensions (L×W×H)
12V36W3.0 A95 × 25 × 20 mm
12V60W5.0 A222 × 19.5 × 18mm — slimmest
12V100W8.3 A217 × 27 × 23 mm
12V150W12.5 A217 × 27 × 23 mm
12V200W16.7 A217 × 27 × 23 mm
12V250W20.8 A292 × 31.3 × 22.6 mm

24V DC Output

VoltageWattageMax CurrentDimensions (L×W×H)
24V36W1.5 A95 × 25 × 20 mm
24V60W2.5 A222 × 19.5 × 18mm — slimmest
24V100W4.2 A217 × 27 × 23 mm
24V150W6.3 A217 × 27 × 23 mm
24V200W8.3 A217 × 27 × 23 mm
24V250W10.4 A292 × 31.3 × 22.6 mm

Choosing wattage: Total your LED load wattage and add 20% headroom. The 100W, 150W and 200W models share the same 217 × 27 × 23mm body — so fitting the space is identical; only the wattage rating differs. Upgrading from 100W to 150W costs no extra ceiling space at all.

Key Features

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18–23mm Ultra-Slim
The thinnest LED driver in the Nucleo range. Fits inside LED aluminium profiles, narrow ceiling voids and furniture recesses where standard drivers cannot.
High Power Density
Advanced electronics pack up to 250W output into a body under 23mm tall — significantly higher watt-per-cubic-centimetre than conventional driver designs.
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Crimp Type Wiring
Crimp terminal connections — mechanically secure, vibration resistant, faster to install than screw terminals. Pre-crimped ferrules snap in cleanly in tight spaces.
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Fanless Design
Free air convection cooling — no fan, no noise, no moving parts. Silent operation across the full wattage range for residential and hospitality installations.
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Full Protection
Over temperature, over current and short circuit protection built in. The driver shuts down safely on fault and recovers automatically — no manual reset needed.
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IP20 Rated
Rated for indoor dry installations — inside profiles, false ceilings, conduit enclosures and concealed electrical voids.

Applications

The H Series is specified wherever a standard driver's physical size is the obstacle:

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Narrow LED Profiles
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Recessed Cove Lighting
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False Ceiling Voids
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Furniture & Joinery
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Mirror & Vanity Lighting
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Shelf & Display Lighting
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Hotel Room Lighting
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Retail Display
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Concealed Office Lighting
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Skirting LED Profiles

Technical Specifications

ParameterSpecification
SeriesH Series — UltraFine Design
Driver typeConstant Voltage (CV), fixed output
Output voltage12V DC or 24V DC
Output wattage36W / 60W / 100W / 150W / 200W / 250W
Wiring typeCrimp type terminals
Body height18mm (60W) to 23mm (100W–250W)
DimmingNot dimmable — fixed full output
CoolingFanless, free air convection
IP ratingIP20 (indoor dry)
DesignHigh power density, UltraFine
ProtectionsOver temperature, over current, short circuit
Application classClass I / II / III internal lights
InstallationIndoor only, concealed
SupplyPan India

Frequently Asked Questions

What makes the H Series 'UltraFine'?
The H Series has a body height of just 18mm to 23mm — among the slimmest LED drivers available. The 60W model is only 222 × 19.5 × 18mm, thin enough to fit inside LED aluminium profile channels and 20mm ceiling voids where standard 30-50mm drivers cannot be concealed. High power density electronics deliver up to 250W output from this compact enclosure.
What is crimp type wiring and why does it matter?
Crimp terminals make connections by mechanically deforming a metal sleeve around the wire — more secure than screw terminals or push-in connectors. Crimped joints resist pull-out, vibration and oxidation, and can be made faster with pre-crimped ferrules. This is especially useful when wiring inside tight LED profile end caps or ceiling voids where a screwdriver is hard to manoeuvre.
Is the H Series dimmable?
No — the H Series is a fixed-output constant voltage driver. It provides stable 12V or 24V DC at full rated wattage. For dimmable installations, use the Nucleo CP Series (Triac/0-10V/PWM/Resistor multi-protocol) or CD Series (4-gear DIP dimming). The H Series is the right choice where consistent full brightness is needed and the priority is the smallest possible physical footprint.
Which LED profiles is the H Series designed for?
Any LED aluminium profile with an internal cavity of 20mm or more — including narrow recessed profiles, corner profiles, surface profiles, skirting profiles and trimless ceiling profiles. The H Series also fits inside furniture LED profiles, slim false ceiling voids, and shallow furniture recesses. The crimp wiring dresses neatly inside profile end caps.
Do the 100W, 150W and 200W models share the same size?
Yes — the 100W, 150W and 200W models all measure 217 × 27 × 23mm. This means upgrading from 100W to 150W or 200W requires no change to the installation space — only the wattage rating differs. Useful when designing for future load expansion without rerouting wiring or modifying the ceiling void.
Does Nucleo supply the H Series across India?
Yes. Nucleo supplies H Series UltraFine LED power supplies pan-India from Mumbai — to Delhi, Bangalore, Hyderabad, Chennai, Pune, Ahmedabad, Kolkata, Jaipur and beyond. Contact us for project quantities and bulk pricing.