J599HV High-Voltage, High-Current Circular Connectors, up to 300 A
Up to 300 A · 3500 V withstanding · IP65 · HV interlock option
KH High-Current Circular Connectors, 5 to 800 A
5–800 A per contact · 400 V · 30 layouts · hermetic bulkhead version
KH is a compact, lightweight bayonet circular connector for high currents. Solder contacts from Ø1 mm (5 A) to Ø15 mm (800 A) are combined in 30 layouts across five shell sizes, from a single 800 A contact to 24 signal and power contacts. Plugs, receptacles, front-mounting receptacles, threaded solder versions and a hermetic through-bulkhead receptacle are available.
- Current per contact
- 5 to 800 A
- Rated voltage
- 400 V at sea level
- Test voltage
- 1500 V
- Layouts
- 30 in shells 16–45
- Temperature
- −55 to +150 °C
- Mating cycles
- 500
Key features
- Contacts from Ø1 mm (5 A) to Ø15 mm (800 A), very low contact resistance
- 30 standard layouts in shells 16, 20, 27, 33 and 45
- Bayonet coupling, small size and light weight
- Plugs with shielded nut, straight or 90° cable clamp
- Hermetic through-bulkhead receptacle with left- and right-hand plugs and keyed mating
- Nickel or cadmium finishes
- Contact sizes and layouts can be customized
Specifications
| Parameter | Value | Condition |
|---|---|---|
| Rated voltage | 400 V DC or AC 50 Hz | 101 kPa |
| Rated voltage, low pressure | 250 V DC or AC 50 Hz | 2.2 kPa |
| Withstanding voltage | 1500 V | Normal conditions |
| Insulation resistance | ≥ 500 MΩ / ≥ 20 MΩ | Normal / damp heat at 150 °C |
| Parameter | Value | Condition |
|---|---|---|
| Coupling | Bayonet | |
| Durability | 500 mating cycles | |
| Vibration | 10–2000 Hz, 98 m/s² | |
| Shock | 343 m/s², 60–80 per minute |
| Parameter | Value | Condition |
|---|---|---|
| Operating temperature | −55 to +150 °C | |
| Salt spray | 48 h (nickel), 96 h (cadmium) | |
| Mould | 28 days, grade 2 |
Values not listed above — for example vibration level, leak rate or other environmental tests — can be tested to your requirements, including third-party testing. Specifications are subject to change; contact us for the current datasheet.
Standard layouts
The layout code gives shell size and contact count (for example 45-4 = shell 45, four contacts). Contact sizes per layout are shown on the layout drawing, which we send with the quotation.
| Shell | Layouts |
|---|---|
| KH16 | 16-3 |
| KH20 | 20-1, 20-4, 20-7 |
| KH27 | 27-1, 27-4, 27-6, 27-6A, 27-6B, 27-7, 27-7-1, 27-12 |
| KH33 | 33-3, 33-4, 33-9, 33-12, 33-12-1, 33-12-2, 33-12-3, 33-21, 33-A1 |
| KH45 | 45-1, 45-3, 45-4, 45-7, 45-8, 45-9, 45-10, 45-10A, 45-24 |
Versions
| Series code | Version | Notes |
|---|---|---|
| KH | Bayonet solder connector | |
| KHT | Threaded solder connector | |
| KH…-GQ / KHT…-GQ | Front-mounting versions | |
| KH…Z-MC1 / MC2 | Hermetic through-bulkhead receptacle | Mates with a left-hand plug (C1/C2) on one side and a right-hand plug (U1/U2) on the other; the 30° C1 key is recommended |
Contact sizes and current ratings
| Contact size | Engaging diameter | Contact resistance | Current rating | Wire size |
|---|---|---|---|---|
| Ø1 | 1 mm | 0.005 Ω | 5 A | — |
| Ø1.5 | 1.5 mm | 0.003 Ω | 10 A | — |
| Ø2 | 2 mm | 0.002 Ω | 15 A | — |
| Ø2.5 | 2.5 mm | 0.001 Ω | 25 A | — |
| Ø3.5 | 3.5 mm | 0.0005 Ω | 50 A | — |
| Ø5.0 | 5.0 mm | 0.0004 Ω | 75 A | — |
| Ø5.5 | 5.5 mm | 0.0004 Ω | 80 A | — |
| Ø7.0 | 7.0 mm | 0.0003 Ω | 140 A | — |
| Ø10 | 10 mm | 0.0002 Ω | 200 A | — |
| Ø15 | 15 mm | 0.00015 Ω | 800 A | — |
How to order
KH [shell][contact][contacts][type][backshell][-GQ]
Example: KH33J4ZP — Receptacle, shell 33, pin contacts, 4 contacts, shielded nut
| Code segment | Options |
|---|---|
| Shell | |
| Contact | |
| Contacts | |
| Type | |
| Backshell | |
| Mounting |
Example set: hermetic receptacle KH45J24Z-MC1 with left-hand plug KH45K24TP-C1 and right-hand plug KH45K24TP-U1.
Cadmium finishes are not RoHS compliant and are supplied on request.
Contact counts and terminations
Standard contact counts
- 1
- 3
- 4
- 6
- 7
- 8
- 9
- 10
- 12
- 21
- 24
Terminations
- Solder
Typical applications
- Power distribution and switchgear
- Battery and energy storage systems
- Motor and generator connections
- Test and burn-in equipment
- Sealed power bulkheads
Frequently asked questions
What is the highest current KH can carry?
A single Ø15 mm contact is rated 800 A; layout 45-1 uses one of these. Other layouts combine power and signal contacts — send your currents and we will propose a layout.
Can KH pass power through a sealed wall?
Yes — the hermetic through-bulkhead receptacle mates with a plug on each side of the wall.
From sample to production
Send your requirement
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 made to your order. 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.
Need a quote or a drawing?
Send your part number, pin-out or drawing. An engineer will reply by email.
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