This is a very compact mercury slip ring with an outer diameter of just 31.6 mm, engineered to handle 250 Amps on a single channel. Using advanced liquid mercury contact technology, it offers ultra-low resistance, stable electrical transmission, and virtually zero maintenance, making it ideal where high current must be transmitted through a tight mechanical space.
Technical Specifications (Typical)
|
Parameter |
Value |
|
Model |
A1H25S (Compact) |
|
Number of Circuits |
1 pole |
|
Rated Current |
250A |
|
Voltage Range |
Up to 600V AC/DC |
|
Outer Diameter (OD) |
31.6 mm |
|
Contact Resistance |
< 1 mΩ |
|
Insulation Resistance |
> 100 MΩ @ 500 VDC |
|
Operating Speed |
0–250 rpm (higher on request) |
|
Operating Temp. |
–30°C to +60°C (customizable) |
|
Housing Material |
Aluminum alloy / stainless steel |
|
Conductor |
Gallium is optional / A1H25NM |
Key Features
• Ultra-Compact Size: OD only 31.6 mm, ideal for space-constrained applications
• High Current Handling: Single pole rated for 250A continuous.
• Mercury Contact Technology: Provides low contact resistance (<1 mΩ) and noise-free transmission.
• Long Service Life: Outperforms brush-type slip rings, capable of hundreds of millions of revolutions.
• Sealed & Maintenance-Free: Hermetically sealed to prevent mercury leakage and protect against dust and moisture.
• Stable & Spark-Free: No arcing, suitable for sensitive environments.
Advantages Over Conventional Slip Rings
1. Compact footprint: Only 31.6 mm OD while supporting 250A.
2. Superior reliability: Mercury contacts eliminate brush wear.
3. Smooth rotation & low noise: Perfect for precision systems.
4. Maintenance-free: Sealed design, no service required.
5. Long life & cost-effective: Extended operational lifespan reduces downtime.
More Models Are Optional
|
Poles |
Model |
Current Amp. |
Voltage AC/V |
MAX.FREQ.MHZ |
Max. RPM |
Operating Temp. Max/Min °C |
Rotating Torque (gm-cm) |
Insulation Resistance |
|
1 |
A1M |
10 |
250 |
200 |
2000.. |
60/-30 |
75 |
>25MΩ |
|
2 |
A2S |
4 |
250 |
200 |
2000.. |
60/-30 |
75 |
>25MΩ |
|
3 |
A3S |
4 |
250 |
200 |
1800 |
60/-30 |
100 |
>25MΩ |
|
2 |
A2H |
30/2 |
250 |
200 |
1800 |
60/-30 |
200 |
>25MΩ |
|
3 |
A3M |
30/1 |
250 |
200 |
1800 |
60/-30 |
200 |
>25MΩ |
|
3 |
A3H |
30/3 |
250 |
200 |
1200 |
60/-30 |
400 |
>25MΩ |
|
4 |
A4H |
30/2; 2/4A |
250 |
200 |
1200 |
60/-30 |
400 |
>25MΩ |
|
6 |
A6H |
30/4; 2/4A |
250 |
200 |
300 |
60/-30 |
700 |
>25MΩ |
|
8 |
A8H |
30/6; 2/4A |
250 |
100 |
200 |
60/-30 |
1000 |
>25MΩ |
|
10 |
A1030 |
30/8; 2/4A |
250 |
100 |
100 |
60/-30 |
1500 |
>25MΩ |
|
12 |
A1230 |
30/10; 2/4A |
250 |
100 |
60 |
60/-30 |
2000 |
>25MΩ |
|
14 |
A1430 |
30/12; 2/4A |
250 |
100 |
40 |
60/-30 |
3000 |
>25MΩ |
|
15 |
A1H25S |
250/1 |
250 |
200 |
1200 |
60/-30 |
250 |
>25MΩ |
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