Surge Protection Devices for LED street lights, floodlights, signboards and outdoor luminaires. Protect drivers from lightning-induced transients and line surges. IP67 potted, made in India.
Outdoor LED luminaires installed on street poles, building exteriors, and overhead-line distribution networks sit directly in the path of lightning-induced surges and voltage transients. Even a lightning strike a kilometre away can induce a multi-kilovolt spike on nearby overhead AC lines. That spike travels into the luminaire's driver and — if unprotected — destroys it instantly.
A Surge Protection Device (SPD) is a small inline component installed between the AC supply and the LED driver. When voltage exceeds the safe threshold, the SPD diverts the excess current to ground, clamping the voltage at a safe level. The driver and LEDs downstream stay protected. After the surge passes, the SPD resets automatically.
For street-light tenders, rural electrification projects, signboards in lightning-prone regions and commercial outdoor lighting, an SPD is not optional — it's the difference between a 5-year fixture life and replacing every driver in the project within a year of the first monsoon.
Three production models cover most outdoor LED applications — from typical urban street lighting to high-exposure rural pole-tops.
The premium SPD in our range. Combines 10kV surge clamping with high-voltage and low-voltage cut-off — so the luminaire is protected from both lightning transients AND from sustained over-voltage / brown-out conditions. Installed in series behind the driver.
Standalone 10kV surge protection device, IP67 potted with a Gas Discharge Tube (GDT) for fast surge arrest. Installs in series or parallel behind LED street lights, pole-mounted floodlights and outdoor signage. Compact form factor fits typical luminaire driver compartments.
The highest-rated SPD in our range — 20kV surge clamping for installations with severe lightning exposure (overhead distribution, pole-tops, coastal/eastern monsoon regions, telecom huts). Built-in status LED shows whether the SPD has reached end-of-life after sustained surge events.
Pole-mounted street lights are the single most-exposed fixture type for lightning-induced surges. Every street-light driver in a tender project should be paired with an SPD.
Stadium, parking-lot and façade floodlights — high-wattage, expensive, exposed to direct outdoor weather. SPDs prevent repeated driver burnouts in monsoon months.
Tall outdoor signboards and rooftop billboards on poles or steel structures. Surge events here often take out the entire LED matrix; an SPD protects both driver and array.
Long overhead distribution lines, weaker neutral, frequent lightning. Rural village street-lighting tenders specifically require SPDs for warranty viability.
Outdoor IP cameras with their own power adapters can use SPDs to protect the camera + PoE switch behind it. Single-point protection for the entire outdoor sub-system.
Lighting inside cell-tower compounds and BTS huts — high lightning exposure due to nearby tower. SPDs are mandatory per most telco infrastructure specs.
An SPD contains two main components: a Metal Oxide Varistor (MOV) and, in higher-rated units, a Gas Discharge Tube (GDT). Under normal voltage, both behave as open circuits — no current flows through the SPD, and the LED driver receives clean AC supply. When voltage spikes above the SPD's clamping threshold, the MOV's resistance drops sharply, diverting the surge current to ground. The GDT handles the largest, fastest transients (lightning strikes) by ionising and providing an even lower-resistance path.
Once the surge passes (typically within microseconds), the SPD components return to high-resistance state and the LED driver continues running normally. The HV/LV cut-off in our SP-1245 adds protection against sustained over-voltage and brownout — conditions an MOV alone can't handle because they last too long.
Over their lifetime, MOVs and GDTs degrade with each surge event they absorb. After many high-energy surges, the device reaches end-of-life and must be replaced. Our SP-1448 includes a visual status indicator (a small status LED) that signals when the SPD has reached end-of-life — useful for street-lighting maintenance crews to identify which units need swapping.
A Surge Protection Device installed inline between the AC mains and the LED driver. It diverts voltage spikes — from lightning, switching transients, or grid faults — to ground, preventing them from damaging the driver and LEDs.
Built-in surge protection on a quality driver is typically rated 4–6kV. Lightning-induced surges on outdoor lines can reach 10–20kV. The external SPD adds a first stage of clamping in front of the driver, absorbing the bulk of the surge before it reaches the driver's internal protection. Layered protection is the standard for outdoor installations.
The number is the maximum surge voltage the SPD can clamp. 10kV is sufficient for most urban and semi-urban outdoor LED installations. 20kV is recommended for high-exposure sites: rural pole-tops, overhead lines, telecom infrastructure, coastal and eastern Indian regions with frequent lightning.
The SPD wires inline between the AC mains and the LED driver — three terminals: line in, neutral in, earth (ground). Mount inside the luminaire housing alongside the driver. Wiring diagram supplied with every unit.
No routine maintenance under normal conditions. After major lightning events, the SPD may have absorbed enough energy to require replacement — the SP-1448 includes a visual status LED that indicates end-of-life. The SP-1245 and SP-1545 rely on test instruments to verify health if needed.
Yes — we manufacture in Ghaziabad and supply LED light makers, electrical contractors and tender projects across India. Volume pricing from 100 units, custom variants on request. WhatsApp +91 82872 62090 or email sales@smoothpower.in.