Drain arrangement
The manufacturer requires the drain pipe to connect directly to the tank, separately from other lines. Check the pressure and drain ports against the mounting drawing.
Yuken hydraulic pressure switches
SG-02 pressure switches
Switch an electrical circuit at a preset hydraulic pressure. Compare pressure ranges, contact ratings and mounting details for high- and low-pressure detection.
2 microswitchesHigh- and low-pressure settings
350 Kgf/cm²Maximum operating pressure
B / C / H / KFour pressure adjustment ranges
Size 02Sub-plate mounting
Detect high and low pressure settings
The SG-02 pressure switch makes or breaks an electrical circuit when hydraulic pressure reaches a preset value. It has two microswitches for high- and low-pressure detection, with separate adjustment screws.
Each microswitch has C, NO and NC terminals. Select the contact arrangement and electrical load rating to suit the required switching sequence.
The catalogue includes relay and motor-control circuit examples. Use the complete wiring diagrams and contact ratings when reviewing the control circuit.
SG-02 specifications
| Parameter | Catalogue value |
|---|---|
| Model family | SG-02 |
| Mounting | Sub-plate mounting |
| Maximum operating pressure | 350 Kgf/cm² |
| Mass | 4.5 Kg. |
| Microswitches | Two, for high- and low-pressure settings |
| Design number / design standard | 20 / 80 |
Choose the pressure adjustment range
| Symbol | Pressure adjustment range | Model |
|---|---|---|
| B | 7-70 Kgf/cm² | SG-02-B-2080 |
| C | 35-140 Kgf/cm² | SG-02-C-2080 |
| H | 70-210 Kgf/cm² | SG-02-H-2080 |
| K | 105-350 Kgf/cm² | SG-02-K-2080 |
Choose the range for the required high and low settings. The catalogue’s differential-pressure curve describes the difference in switching pressure as pressure rises and falls; review it when checking the switching cycle.
Microswitch contact ratings
| Supply | Contact / load | 125V | 250V |
|---|---|---|---|
| AC | Normally closed (NC) | 4.5A | 3.0A |
| AC | Normally open (NO) | 2.5A | 1.5A |
| DC | Inductive load | 0.05A | 0.03A |
The catalogue lists the AC values for inductive, electric motor, incandescent lamp and electromagnetic coil loads. DC values are given only for inductive load. Confirm voltage, load type and contact selection against the manufacturer’s ratings before connection.
Sub-plate and mounting details
| Item | Catalogue reference |
|---|---|
| Sub-plate | SGM-02-2080 |
| Sub-plate thread size | 1/4 BSP.F |
| Sub-plate mass | 1.1 Kg. |
| Mounting bolts | M6 x 60 Lg., 2 |
| Bolt kit | BKSG-02-20 |
Special seals
An F prefix identifies special seals for phosphate ester type fluids. Consult Yuken before ordering this configuration and include the fluid details in your enquiry.
Selection support
Send pressure settings and electrical load details
Include the intended switching sequence so the pressure range and contact ratings can be reviewed together.
- Full SG-02 model code and quantity
- Required high- and low-pressure settings
- AC or DC supply, voltage and load current
- Load type and NO or NC contact requirement
- Wiring diagram, fluid and drain arrangement
- Sub-plate and mounting bolt requirement
SG-02 pressure-switch catalogue
Review pressure ranges, microswitch ratings, terminal diagrams, differential-pressure characteristics and mounting dimensions.
Enquire about SG-02 pressure switches
Send your model and application details to Shree Hydraulics in Belagavi for product selection and quotation enquiries across India.