Drop-In Power Modules

Power
Management, Solved.

Every hardware project needs protection and regulation, but none of it is what makes yours special. PN Labs modules handle overvoltage, reverse polarity, overcurrent, and voltage conversion so your team ships the product, not the power system.

Explore Modules Browse Full Shop
100% QC Tested Full Datasheets & Integration Guides Direct Engineer Support
PN Labs hardware modules on a workbench

Find Your Module

Protect a Circuit

Overvoltage, reverse polarity, and overcurrent protection

Regulate Voltage

Step-down conversion and multi-rail power distribution
The Problem

Your Team Is Spending Engineering Hours
on Circuits That Aren't Your Product.

Protection, regulation, and power distribution are solved problems, but the solutions live in app notes and reference designs, not as tested, documented modules you can integrate and ship. So teams rebuild them. Every project. Under pressure. Often with corners cut.

Power Design Eats Your Schedule

Every project starts with the same detour: design a protection circuit, lay out a regulator, source components, spin a board, test it. Weeks of work on a subsystem that isn't your product, and if it fails at the demo, it's your problem.

Generic Modules Fail When It Matters

The $3 buck converter from Amazon works on the bench at room temperature. Then it fails at the trade show, in thermal testing, or twenty units into a production run. No datasheets. No test data. No support. No recourse.

Our Modules

Engineered Building Blocks.
Protection and Regulation, Handled.

Designed around real failure modes, not feature checklists. Every module is individually QC tested, ships with complete documentation, and costs less than the engineering hours you'd spend building your own.

PROTECT over-voltage protection module
Protection ★ Popular

Protect

Overvoltage & Reverse Polarity Protection — 5–30V, 25A

Spec Comparison
Input Voltage 5–30V DC
Max Current 25A
Overvoltage ✓
Undervoltage —
Overcurrent —
Reverse Polarity ✓
Trip Adjustment Potentiometer
Fault Reset Auto-Reset
  • Protect battery-powered systems from overvoltage spikes and wiring errors
  • Inline protection for 12V/24V industrial and marine power rails
  • Safety cutoff for any system where a voltage spike destroys downstream electronics

$23.99 USD

View Module →
PROTECT NANO compact protection module
Protection

Protect Nano

Compact Overvoltage + Overcurrent Protection — 3.3V / 5V / 12V, 5A

Spec Comparison
Input Voltage 3.3 / 5 / 12V
Max Current 5A
Overvoltage ✓
Undervoltage ✓
Overcurrent ✓
Reverse Polarity ✓
Trip Adjustment Solder Jumpers
Fault Reset Latch-Off (Resettable)
  • Protect space-constrained IoT devices and embedded systems
  • Safeguard Raspberry Pi, Arduino, and other dev boards from power faults
  • Overcurrent and overvoltage protection for USB-powered projects

$23.99 USD

View Module →
FlexTrip adjustable e-fuse module
Protection

FlexTrip

Adjustable Electronic Fuse — 3–22V, 5A, Selectable Trip Current

Spec Comparison
Input Voltage 3–22V DC
Max Current 5A
Overvoltage —
Undervoltage —
Overcurrent ✓
Reverse Polarity ✓
Trip Adjustment Solder Jumpers
Fault Reset Latch-Off (Resettable)
  • Battery over-current and short-circuit protection
  • Replace fast-blow fuses in applications where fuse replacement isn't practical
  • Adjustable overcurrent protection for robotics, drones, and mobile systems

$20.99 USD

View Module →
PowerPal triple-output DC-DC converter
Regulation ★ Popular

PowerPal

Triple Synchronous Buck — 14.5–52V In → 12V (10A), 5V & 3.3V (5A) Out

Spec Comparison
Input Voltage 14.5–52V DC
Output Voltages 12V, 5V and 3.3V
Simultaneous Outputs 3
Max Output Power 160W
Fine-Tuning Trim Pots
Topology Synchronous Buck
Inductor External
Best For High-power multi-rail
  • Power a complete embedded system from a single high-voltage source
  • Multi-rail power distribution for industrial, EV, and solar applications
  • Replace three separate regulators with one tested, documented module

$59.95 USD

View Module →
NanoBuck compact buck regulator
Regulation

NanoBuck

Ultra-Compact Synchronous Buck — Integrated Inductor, 4.5–36V In, 2.5A

Spec Comparison
Input Voltage 4.5–36V DC
Output Voltages 3.3 / 5 / 9 / 12V
Simultaneous Outputs 1
Max Output Power 30W
Adjustment Solder Jumpers
Topology Synchronous Buck
Inductor Integrated
Best For Ultra-compact single-rail
  • Regulate battery or adapter voltage down to 3.3V, 5V, 9V, or 12V
  • Compact single-rail power for custom PCBs, robotics, and tight enclosures
  • Clean, efficient step-down conversion where board space is limited

$16.99 USD

View Module →
Browse Full Shop
In Development Protect+ BatteryPal Get notified →
Why PN Labs

Built by Engineers Who Got Tired of
Solving the Same Problems.

We started PN Labs because we kept rebuilding the same power management circuits on every project. These modules are what we needed: designed, tested, and documented the way we wished off-the-shelf solutions were.

Engineered & QC Tested in Canada

Designed in Montreal. Every single module is individually tested before it ships. Not statistical sampling. If it leaves our bench, it works.

Documentation You'll Actually Use

Full datasheets, integration guides, and dimensional drawings with every product. The kind of documentation you'd create for your own designs, because we did.

Talk to the Engineers Who Designed It

Email us with your integration question. You'll hear back from the people who designed the module. Not a ticket system. Volume and custom inquiries welcome.

Buy Where You Already Shop

Available direct and on your preferred marketplace.

pnlabs.ca Elecrow RobotShop Lectronz
Our Story

We Kept Solving Problems That
Should Have Been Solved Once.

Nick was in a university research lab working on lithium-ion battery instrumentation. His goal was the research, but most of his time went to power circuits, protection hardware, and support systems just to keep the experiments running.

Ethan was the lead electrical engineer at a hardware company, taking products from prototype to mass production. On every project, the same pattern: weeks spent designing circuits that should have already existed.

We met building a fully autonomous sailboat to cross the Atlantic Ocean, kept solving the same power problems, and realized every hardware developer faces the same friction. That's what PN Labs exists to fix: the power foundation, handled, so you can focus on what you're actually building.

Read our full story
PN Labs products on an engineering workbench
What Engineers Say

Trusted by Engineers and Builders.

4.5
★★ ★★ ★

Verified purchases, pnlabs.ca

Build With Confidence

The Foundation Shouldn't Be the Risk.

At $17–$60 per module, you're spending less than a single hour of engineering time on modules that have already been validated.

Build on something that's already been tested.

QC Tested — Every Module Full Documentation Included Direct Engineer Support Volume Discounts Available

Returns & Warranty

Customer satisfaction is important to us. If a module isn't working as expected, contact us — we'll help you debug the integration or suggest an alternative configuration.

Shop All Modules

Have a question first? Email us. We actually respond.