The Switching Company · Founded 2019
One device.
All the protection.
The PowerSwitcher replaces contactors, fuses, current sensors, and precharge lines — in a single solid-state module from 48V to 1500V.
+20
OEM programs & PoCs
1 kA
Hard current cap
ACC
Active current control for full protection
Product Portfolio
One architecture.
Four voltage classes.
The same module platform — sized for every application from light mobility to grid-scale BESS.
48 V
Voltage max60 V
Cont. current600 A
Rds(on)0.4 mΩ
Weight600 g
Volume250 cm³
LawnmowerForkliftDatacenterRobotic mower
96–400 V
Voltage max500 V
Cont. current600 A
Rds(on)0.62 mΩ
Weight600 g
Volume250 cm³
Passenger carsCommercial vehiclesForklift
800 V
Voltage max1000 V
Cont. current600 A
Rds(on)0.82 mΩ
Weight600 g
Volume250 cm³
High perf. EVHeavy dutyMarineDatacenterRobotics
1500 V
Voltage max1800 V
Cont. current1200 A
Rds(on)1.4 mΩ
Weight800 g
Volume500 cm³
BESSSolarIndustrial
Key Features
An intelligent
electronic switch.
Designed to protect any electrical installation — outperforming electromechanical components and standard solid-state circuit breakers.
Ultra Fast
Microsecond-class response. Analogic reaction catches faults before they propagate.
Bidirectional
Blocks current flow in both directions — no topology constraint for your architecture.
Wear-Free
MOSFET/JFET technology — no mechanical contacts, no degradation over the product's entire lifetime.
Re-Armable
Resettable without manual intervention. No replacement needed after a fault event.
Max Surge Current Known
Active current cap at 1 kA protects your battery and DC bus from destructive inrush events.
Reduced Weight & Footprint
Replaces several BDU components in one compact unit — cuts system weight by several kilograms.
Precharge Capability
Automatic pre-charge built in. Safe live insertion without external circuitry.
Inductance-Free
Current limiting makes inductance irrelevant. Design your pack freely — no more inductance constraints.
Active Current Control
Same event.
Two outcomes.
CURRENT vs. TIME — SHORT-CIRCUIT EVENT
CurrentTime →
Standard Fuse
PowerSwitcher
FUSE
Passive — no current limit
Fault current can exceed 10 kA. The fuse is destroyed after a single event and must be replaced.
PS™
Active — hard cap at 1 kA
Fault current never reaches destructive levels. Detection via Vds in microseconds — no sense resistor needed. Reusable after event.
Inductance-free design freedom
With current capped and cutoff energy bounded, inductance no longer constrains your architecture. Wire and layout freely.
Comparison
One device replaces four.
The PowerSwitcher consolidates contactors, fuse, current sensor, and precharge line — with active intelligence none of them could provide.
| Traditional: 4+ components | PowerSwitcher™ | |
|---|---|---|
| Active current control | ✕Not achievable with passive parts | ✓Smart limiting & cut-off at 1 kA |
| Switching speed | ✕10–20 ms mechanical delay | ✓Microsecond-class response |
| Load break capability | ✕Arc damage to contacts | ✓Full load break — no arcing |
| Hot-swap / Pre-charge | ✕External precharge circuit required | ✓Built-in, automatic |
| Lifespan | ✕Wear-prone contacts, fuse consumed | ✓Wear-free — unlimited cycles |
| Weight & Volume | ✕4+ units, bulky coils | ✓600 g · 250 cm³ |
Reliability & Safety
Designed to fail safe.
Every failure scenario leads to a safe, predictable state. Default state: OPEN (De-Energised).
FM-01
Control signal loss
Wire break, MCU failure or CAN loss
Automatic switch to OPEN state. After timeout, load de-energised. No unintended activation possible.
→ OPEN · Fail-safe
FM-02
Overtemperature
High load current or insufficient cooling
Output inhibited to protect internal components. Load de-energised until thermal condition is resolved.
→ OPEN · Inhibited
FM-03
Free-wheeling diode failure
Short-circuit
Current capped at 1000 A → output immediately forced OPEN. Inverter and DC Bus fully preserved.
→ OPEN · Bus preserved
FM-04
Supply voltage failure
Loss of low-voltage power supply
Output automatically forced OPEN. No unintended load activation. Load de-energised.
→ OPEN · Fail-safe
FM-05
Power-on self-test
Internal diagnostic at every startup
Full self-check before allowing closure. Fault detected → stays OPEN and reports via CAN. No silent failure.
→ Fault code via CAN
FM-06
Pre-charge failure
Sequence not completed in time
Module aborts, stays OPEN, reports a fault via CAN. No high-current inrush risk.
→ OPEN · CAN alert
Certifications
Built to be certified.
Roadmap aligned with automotive, industrial and market-entry standards — in Europe and North America.
ISO 26262 — ASIL CTarget
Short-circuit detection & current measurement. Highest automotive safety integrity level for safety-critical functions.
ISO 26262 — ASIL BTarget
Connect/disconnect, pre-charge, discharge & ancillary control. SIL equivalent for non-critical automotive functions.
AQG 324Roadmap
Automotive-grade qualification for power semiconductor modules. Thermal cycling, vibration, humidity & long-term reliability.
IEC 60947-10 SSCBRoadmap
Upcoming IEC standard for Solid-State Circuit Breakers. K-Motors development roadmap aligned ahead of publication.
CE MarkingRequired
Mandatory for EU market entry. LVD + EMC directives compliance.
RoHS 3 DirectiveRequired
Restriction of hazardous substances. Required for CE marking & all EU sales.
UL 2367Roadmap
Most directly applicable UL standard for SSCB. Covers solid-state switching & overcurrent protection for the US market.
UL 508 IndustrialRoadmap
Required for industrial US market — data centers, forklifts, machines. c-UL-us marking covers US + Canada.
Get In Touch
Ready to switch
generations?
Request a sample, lock your spec, or start a PoC. Pre-series sample slots are limited — reach out early.
marc@kmotors.techRequest Pre-series sample →