Factory-direct low-voltage & DC protection — quoted to spec, documented for audit.

About Us

Factory-direct AC and DC protection hardware, documented for audit.

Who we are

A protection-device manufacturer that answers with engineering, not brochures

Unsle builds AC and DC protection devices for residential, commercial, solar and grid projects, shipped to contractors and distributors across 60+ countries. The range spans miniature circuit breakers, residual-current devices, DC protection and switchgear — each line built to its applicable IEC standard.

Every product line is backed by a factory test report and a certification file. When an RFQ arrives, our engineers check ratings, standards and coordination before a price goes out — you get a matched, compliant product set, not a catalogue dump.

ONPD Series 500-1500V 2P PV DC Surge Protective Device
ONPD Series PV DC surge protection
ON-OPT Solar Optimizer
ON-OPT solar optimizer
PV T Branch Solar Connectors T2 Connector
PV T-branch solar connectors
ONDB1H IP65 Surface-Mounted Distribution Box Enclosure for 4-39 Circuits
IP65 distribution enclosures

Unsle in numbers

20+
Years
500k+
Units per year
30+
Certifications
60+
Export countries
History

Our Journey

From a tooling bench in the low-voltage appliance cluster to a factory shipping to more than sixty markets.

2011

Company founded

Low-voltage distribution components for the domestic market.

2016

Export licence

First shipments to the Middle East and Africa.

2020

New-energy line

PV connectors, DC SPDs and rapid-shutdown devices enter production.

2023

Smart energy

Smart meters and wi-fi switching added to the range.

2025

Storage & EV charging

Energy-storage and EV-charging protection solutions launched.

2026

100+ markets

Serving distributors and EPC contractors worldwide.

Why Unsle

Why buyers choose Unsle

Three things procurement teams keep coming back for.

Factory-direct supply

Devices ship from our own production lines — no trading-company markup, no middleman delaying samples or re-tests.

Samples and price lists on request

Compliance files, not claims

Each product line carries its certification file and factory test reports, ready for your consultant or authority to review.

IEC 60898 · 61008 · 61009 · 61643

Engineering replies in 24h

RFQs are answered by engineers who check ratings and coordination — usually within one working day, Sun–Thu.

Sun–Thu, 09:00–18:00 GST

How we work

How an order works

From first email to after-sales — five steps, one engineer owning your account throughout.

  1. Send your RFQ

    Models, quantities and destination port. No RFQ yet? Tell us the project type and we will suggest a range.

  2. Engineering match

    We check ratings, standards and coordination, then reply with a matched, compliant product set and quote.

  3. Samples & docs

    Samples with test reports and certification files, so consultants and authorities can approve without friction.

  4. Production & pre-shipment test

    Your order runs on the line and passes batch testing before packing. Reports ship with the goods.

  5. Delivery & after-sales

    Documents for customs, tracking to your port, and the same engineer answering questions after arrival.

Partnership

Ways to work together

Pick the model that fits your market — every one starts with a conversation, not a minimum order threat.

OEM / ODM manufacturing

Your brand, your specs — from private-label MCB ranges to fully custom tooling and enclosures.

Distribution & agency

Regional and project distribution with marketing material, certification files and training support.

Project supply

Matched product packages for solar plants, buildings and infrastructure, quoted against your BOQ.

Where we ship

  • Middle East
  • Africa
  • Europe
  • Asia-Pacific
  • Americas

60+ countries to date. Ask for references in your specific market.

Certifications & Compliance

Test reports and certification files are available for every product line on request.

CE

EU conformity for low-voltage protection devices.

CB

IEC system certification, accepted in 50+ countries.

UL

Listed to UL standards for North American markets.

SAA

Approval for electrical safety in Australia and New Zealand.

Inside the plant

Smart Factory Operations

Tooling, injection moulding, plating, assembly and 100% line testing on one site – the reason reorder batches stay identical.

Automated assembly line
Automated assembly line
Mould CNC machining
Mould CNC machining
Injection moulding
Injection moulding
Automated riveting
Automated riveting
Final assembly
Final assembly
Metal stamping
Metal stamping
Finished-goods warehouse
Finished-goods warehouse
Mould repair bench
Mould repair bench

Send the list. Get the package.

Models, quantities and destination port — that is enough for a first quote. Our engineers check ratings and coordination before it goes out.