HYDAC EDS 1791-N-250-Y00 Electronic Pressure Switch | Replacement, Equivalent & Selection Guide
The HYDAC EDS 1791-N-250-Y00 is a compact, high-precision electronic pressure switch designed for industrial hydraulic and pneumatic systems. This page provides full technical specifications, compatible replacement models, application guidance, and a structured selection guide to help engineers and procurement teams make confident sourcing decisions.
Technical Specifications
- Manufacturer: HYDAC International
- Series: EDS 1791
- Part Number / SKU: EDS 1791-N-250-Y00
- Type: Electronic Pressure Switch
- Measuring Range: 0 – 250 bar
- Output: PNP / NPN switching output (configurable)
- Supply Voltage: 10 – 30 V DC
- Switching Accuracy: ≤ ±1.0% FS
- Process Connection: G¼ male (EN 837)
- Electrical Connection: M12 × 1 connector, 4-pin
- Protection Class: IP67
- Operating Temperature: −25 °C to +85 °C
- Media Compatibility: Hydraulic oils, water-based fluids, gases
- Weight: approx. 840 g (packaged)
- Housing Material: Stainless steel / die-cast zinc
Compatible Replacement & Equivalent Models
The following models are commonly evaluated as functional equivalents or drop-in replacements for the EDS 1791-N-250-Y00. Always verify electrical interface, pressure range, and process connection before substitution.
- HYDAC EDS 1791-N-400-Y00 — Same series, extended range to 400 bar; suitable when higher pressure headroom is required
- HYDAC EDS 3446-3-0250-000 — Upgraded EDS 3000 series with display; backward-compatible mounting footprint
- HYDAC EDS 1791-N-100-Y00 — Lower range (0–100 bar) variant; same electrical and mechanical interface
- Wika S-10 / A-10 — Industry-standard alternative; requires adapter for G¼ connection and output signal verification
- Balluff BSP B250-EV002-A00A0B-S4 — Compatible PNP output, 250 bar range; verify connector pinout
- ifm Electronic PI2794 — Functional equivalent for 250 bar hydraulic applications; M12 connector compatible
Note: Konmask.com recommends confirming all replacement specifications with your system engineer prior to installation.
Why Choose the Original Model
- Factory-calibrated accuracy — ≤ ±1.0% FS ensures reliable setpoint repeatability in closed-loop control
- Proven HYDAC quality — Manufactured to ISO 9001 standards with full traceability
- IP67 protection — Sealed against dust ingress and temporary immersion; ideal for harsh industrial environments
- Wide temperature range — Operates reliably from −25 °C to +85 °C without recalibration
- Universal DC supply — 10–30 V DC input compatible with most PLC I/O modules and control panels
- Long service life — Stainless steel wetted parts resist corrosion and media contamination
Typical Applications
- Hydraulic power units (HPU) — pressure monitoring and overload protection
- Industrial presses and injection molding machines
- Mobile hydraulics: construction equipment, agricultural machinery
- Pneumatic conveying and compressed-air systems
- CNC machine tool coolant and lubrication circuits
- Process automation: chemical dosing, water treatment
- Wind turbine pitch and yaw hydraulic systems
System Compatibility
- PLC Platforms: Siemens S7-1200 / S7-1500, Allen-Bradley CompactLogix / ControlLogix, Mitsubishi MELSEC iQ-R/F, Omron NX/NJ series
- DCS Systems: Emerson DeltaV, Honeywell Experion, ABB 800xA — via standard 24 V DC digital input cards
- Signal Type: PNP/NPN discrete output; compatible with standard 24 V DC sourcing/sinking input modules
- Connector: M12 × 1, 4-pin — standard industrial cable assemblies widely available
- Fieldbus: Not applicable (discrete switching output); for analog/IO-Link variants, see EDS 3000 / EDS 4000 series
Selection Guide
| Parameter | EDS 1791-N-250-Y00 | EDS 1791-N-100-Y00 | EDS 1791-N-400-Y00 | EDS 3446-3-0250-000 |
|---|---|---|---|---|
| Pressure Range | 0–250 bar | 0–100 bar | 0–400 bar | 0–250 bar |
| Output | PNP/NPN | PNP/NPN | PNP/NPN | PNP/NPN + Display |
| Display | No | No | No | Yes (LED) |
| Connection | M12 4-pin | M12 4-pin | M12 4-pin | M12 4-pin |
| IP Rating | IP67 | IP67 | IP67 | IP67 |
| Best For | Standard hydraulic monitoring | Low-pressure pneumatics | High-pressure presses | Setpoint visibility needed |
Recommendation: If your system operates at 0–250 bar with standard PLC I/O and no display requirement, the EDS 1791-N-250-Y00 is the optimal choice. Upgrade to EDS 3446 if on-device setpoint display is required.
Quality Assurance & Sourcing
- All units sourced through authorized HYDAC distribution channels or verified OEM-equivalent supply chains
- Each unit inspected for physical integrity, connector condition, and labeling accuracy before dispatch
- Original manufacturer packaging preserved where available
- Batch traceability records maintained for B2B procurement compliance
- Lead time: typically 3–7 business days for in-stock items; contact us for bulk order scheduling
How to Order
- Confirm your required pressure range, output type (PNP/NPN), and process connection size
- Add the HYDAC EDS 1791-N-250-Y00 to your cart, or contact us for a formal quotation
- For bulk orders (>5 units) or OEM project requirements, email support@konmask.com with your BOM or RFQ
- Payment: T/T, PayPal, and major credit cards accepted
- Shipping: DHL / FedEx / UPS international express; local freight available for CN domestic orders
Replacement & Compatibility FAQ
Q: Can I replace EDS 1791-N-250-Y00 with EDS 3446-3-0250-000 directly?
A: Yes, in most cases. The EDS 3446 shares the same process connection and M12 connector. Verify your PLC input card accepts the same switching logic and that the added display does not conflict with panel cutout dimensions.
Q: Is the EDS 1791-N-250-Y00 compatible with Siemens S7-1200 digital inputs?
A: Yes. The PNP output at 24 V DC is directly compatible with Siemens S7-1200 DI modules (e.g., SM 1221) configured for sourcing input.
Q: What is the difference between EDS 1791-N-250-Y00 and EDS 1791-N-250-000?
A: The suffix Y00 typically denotes a customer-specific or regional variant (e.g., connector orientation, cable length, or approval marking). Contact HYDAC or Konmask.com to confirm the exact variant differences for your region.
Q: Can this switch be used with water-based hydraulic fluids?
A: Yes, provided the fluid is compatible with stainless steel wetted parts. Avoid highly aggressive media (e.g., strong acids/bases) without consulting HYDAC’s media compatibility chart.
Q: Do you provide a warranty?
A: Yes. All units sold through Konmask.com carry a 12-month warranty against manufacturing defects under normal operating conditions.
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