Drives and inverters
J599HV and EV01 serve industrial drives, motor controllers and inverters; XCD carries dedicated power, and mixed-power J30J serves compact servo controllers.
Connectors for Power Electronics and Energy Storage
Inverters, battery systems and drives combine high voltage and current with liquid cooling in compact enclosures.
J599HV carries up to 300 A with 3500 V withstanding voltage and an optional HV interlock; LTK-T and TSA fluid connectors couple cooling loops; SYRMD and J30J mixed-power connectors bring power and signal through one board connector.
At a glance
- 1000 A
O-ring sealed feedthrough studs, standard range
- 300 A
J599HV power contacts, 3500 V withstanding voltage
- 94.2 L/min
TSA maximum flow, 20 bar working pressure
- ±5 mm
EV02 floating mount in X, Y and Z (40-contact version)
Where they are used
Battery packs and energy storage
EV01, QHT02C and EV02 serve battery packs and energy storage. EV02 gives battery-swap systems a guided, floating interface; O-ring feedthrough studs bring high current through sealed walls.
Cooling and board-level power
TSA and LTK-T couple liquid-cooling loops for power electronics; SYRMD and mixed-power J30J carry power and signal on one board connector.
What the connectors must handle
High current
J599HV carries 80–300 A per contact, XCD 25–300 A and KH 5–800 A; O-ring feedthrough studs reach 1000 A.
Voltage and interlock
J599HV withstands 3500 V and offers an HVIL version. QHT02C is rated 1000 VAC working voltage and 3000 VAC withstanding voltage.
Battery-swap alignment
The 40-contact EV02 floats ±5 mm in X, Y and Z, with guide features for blind mating and ≥ 10,000 mating cycles.
Cooling flow and pressure
TSA covers 2–94.2 L/min and LTK-T 2–60 L/min, both at 20 bar working pressure.
Seals and temperature
TSA runs from −55 to +95 °C with EPDM seals and to +155 °C with fluorosilicone; LTK-T runs from −55 to +175 °C.
Board-level power
SYRMD combines 3 A signal contacts with 13 A or 23 A power contacts; mixed-power J30J combines 20 A power with 3 A signal.
Compare the series
Power and battery interfaces
Swipe left or right to see all columns.
| Series | Current | Contacts | Withstanding voltage | Sealing | Mating cycles | Datasheet |
|---|---|---|---|---|---|---|
| J599HV | 80–300 A per contact | 1 to 4 | 3500 V | IP65 | 500 | PDF, 250 KB |
| EV01 | 30–300 A | 1, 2 or 3 | 3000 VAC | IP67 (mated) | ≥ 5000 | PDF, 172 KB |
| QHT02C | 300 A | 1 | 3000 VAC | IP67 | > 500 | PDF, 148 KB |
| EV02 | Up to 250 A power; 10 A control | 13 or 40 | 4000 VAC power / 1500 VAC control | IP65 (mated) | ≥ 10,000 | PDF, 164 KB |
Liquid-cooling couplings
Swipe left or right to see all columns.
| Series | Bore | Maximum flow | Working pressure | Temperature | Mating cycles | Datasheet |
|---|---|---|---|---|---|---|
| TSA | 3 to 20 mm | 2–94.2 L/min | 20 bar | −55 to +95 °C (FVMQ to +155 °C) | 1000 | PDF, 201 KB |
| LTK-T | 3 to 16 mm | 2–60 L/min | 20 bar | −55 to +175 °C | 500 | PDF, 189 KB |
How to choose
List current and conductors
Give continuous and peak current and duty cycle for each power circuit, with wire gauge or bus-bar and lug sizes.
State voltage and interlock
Give working voltage and transients, and tell us whether the layout needs an HVIL circuit; J599HV offers one.
Define the mating method
Give cycle count, mounting and alignment. EV02 uses a guided floating mount; EV01 and QHT02C use push-pull coupling.
Size the cooling loop
Give coolant, flow, available pressure drop and temperature; the bore sets the pressure drop.
Complete wall and board connections
Send the pin-out, board layout or port drawing, and we will review your project.
Recommended series
J599HV High-Voltage, High-Current Circular Connectors, up to 300 A
Up to 300 A · 3500 V withstanding · IP65 · HV interlock option
EV01 Push-Pull High-Power EV Connectors, 30 to 300 A
30–300 A · IP67 · 5000 cycles · push-pull
QHT02C Push-Pull Single-Pole 300 A EV Connectors, 1000 VAC
300 A · 1000 VAC · push-pull · IP67
EV02 Battery-Swap Connectors, 250 A, Floating Mount
Battery swap · 250 A · ±5 mm float · 10,000 cycles
TSA Bayonet Fluid Connectors for Liquid Cooling, 3 to 20 mm
Bayonet · 3–20 mm bores · 1000 cycles · low spillage
LTK-T Push-Pull Fluid Connectors for Liquid Cooling, to +175 °C
Push-pull bayonet · double seal · 20 bar · −55 to +175 °C
SYRMD Mixed-Power Rectangular PCB Connectors, 13 A and 23 A
Power + signal · 13 A / 23 A power contacts · 1.905 mm
J30J Mixed-Power Micro-D Connectors, 20 A Power + 3 A Signal
20 A power + 3 A signal · Micro-D size · twist-pin signal contacts
XCD Bayonet Power Connectors, 25 to 300 A per Contact
Power contacts 25–300 A · hyperboloid sockets · bayonet
KH High-Current Circular Connectors, 5 to 800 A
5–800 A per contact · 400 V · 30 layouts · hermetic bulkhead version
O-Ring Sealed High-Current Feedthrough Studs, up to 1000 A
105–1000 A · stainless steel · O-ring seal
Custom Cable Assemblies and Wire Harnesses
Our connectors · your cable and length · sealed, shielded, high-power
All series can be customized — contact counts, cable lengths, materials and finishes.
Related guides
Choosing Connector Contact Size by Current and Wire Gauge
How to pick 38999-type contact sizes 22D, 20, 16, 12 and 10 by current and wire gauge, with a reference table and notes on derating and mixed layouts.
Withstanding Voltage vs Working Voltage in Connectors
Why a connector's withstanding (test) voltage is not its working voltage, how altitude changes it, and how to choose a safe working voltage.
Choosing Liquid-Cooling Quick-Disconnect Connectors
How to choose liquid-cooling quick-disconnect connectors: bore and flow, pressure drop from Kv, working pressure, spillage and seal materials.
FAQ
What voltage and current does J599HV handle?
J599HV carries 80–300 A per contact and withstands 3500 V, with IP65 sealing and an HVIL version. Send your working voltage and we will review the layout.
Which connector suits battery swapping?
EV02. Its 40-contact version floats ±5 mm in X, Y and Z, with guide features for blind mating and ≥ 10,000 mating cycles.
How do TSA and LTK-T cooling couplings differ?
TSA has 3–20 mm bores and up to 94.2 L/min; LTK-T has 3–16 mm bores, up to 60 L/min and runs to +175 °C. Both work at 20 bar.
Can power and signal share one board connector?
Yes. SYRMD mixes 3 A signal with 13 A or 23 A power contacts, and mixed-power J30J combines 20 A power with 3 A signal in a Micro-D shell.
Which feedthrough carries 1000 A?
The standard O-ring sealed feedthrough studs cover 105–1000 A, withstand 5000 VAC and leak less than 1 × 10⁻⁸ Pa·m³/s at 0.1 MPa.
From sample to production
Send your requirements
Part number, drawing, pin-out or a short description of your application.
Configuration and quote
Our engineers match the configuration and reply with a drawing and quotation.
Samples
Samples are built to order. The minimum order quantity is 10 pieces, and samples and production orders each take 4–8 weeks. Third-party testing to your specification is available on request.
Your approval
You test the samples in your own equipment and approve them.
Series production
Production follows the approved sample configuration, with machining, molding, plating and assembly in our own Shenyang factory.
Need a quote or a drawing?
Send your part number, pin-out or drawing. Every inquiry is acknowledged by email within 1 business day, and an engineer follows up with a matched configuration, drawing or quotation.