Product Description
EH1200T4 ATEX
New EH1200 mechanical booster • Part A30557900
The Edwards EH1200 mechanical booster uses a hydrokinetic drive so it can assist pump-down from atmospheric pressure while providing automatic overload protection. This page covers part A30557900.
Features
- Hydrokinetic drive can reduce total pump-down time by up to 50%
- Automatic overload and overheating protection
- No bypass line, pressure switch or inverter required for standard installation
- HC hydrocarbon-oil and FX PFPE-prepared configurations
Performance Graph

The graph is a VPS presentation of published Edwards family data. Confirm operating point, backing-pump capacity, process gas and motor selection before ordering.
Technical Specifications
| Specification | Value |
|---|---|
| Model | EH1200 |
| Part number | A30557900 |
| Selected configuration | EH1200T4 ATEX |
| Nominal displacement | 1,195 m³/h (715 cfm) at 50 Hz; 1,435 m³/h (845 cfm) at 60 Hz |
| Maximum pressure differential | 90 mbar (68 Torr) at 50 Hz; 75 mbar (56 Torr) at 60 Hz |
| Inlet connection | DN 160 ISO-F |
| Outlet connection | DN 100 ISO-F |
| Motor / drive | 3.0 kW / 4 hp |
| Cooling | Water cooled; 120 L/h (0.53 gal/min) nominal requirement |
| Sound level | 70 dB(A) |
| Typical weight | 328 lb (149 kg) |
| Typical dimensions | 953 × 380 × 334 mm (L × W × H) |
| Lubricant capacity | 1.25 L gear case; 2.4 L coupling cover; 0.125 L shaft-seal reservoir |
| Hazard classification | ATEX / hazardous-location configuration |
| Ultimate pressure | 10 Pa nominal |
| Protection | IP44 |
Available Configurations
| Part number | Configuration | Electrical / drive | Gas flow | Availability |
|---|---|---|---|---|
| A30505934 | HC - IE3 ASIA 50Hz | 3Ph 200V 50Hz | Standard EH flow orientation | Call for Pricing |
| A30505945 | HC - IE3 EU/CN 50Hz | 3Ph 380–400V 50Hz | Standard EH flow orientation | Call for Pricing |
| A30506934 | HC - IE3 ASIA 60Hz | 3Ph 200V / 380V 60Hz | Standard EH flow orientation | Call for Pricing |
| A30506946 | HC - IE3 US 60Hz | 3Ph 230/460V 60Hz | Standard EH flow orientation | Call for Pricing |
| A30507934 | FX - IE3 ASIA 50Hz | 3Ph 200V 50Hz | Standard EH flow orientation | Call for Pricing |
| A30507945 | FX - IE3 EU/CN 50Hz | 3Ph 380–400V 50Hz | Standard EH flow orientation | Call for Pricing |
| A30508934 | FX - IE3 ASIA 60Hz | 3Ph 200V / 380V 60Hz | Standard EH flow orientation | Call for Pricing |
| A30508946 | FX - IE3 US 60Hz | 3Ph 230/460V 60Hz | Standard EH flow orientation | Call for Pricing |
| A30557900 | EH1200T4 ATEX | 3Ph 380–415V 50Hz | Standard EH flow orientation | This configuration |
Maintenance, Oil & Repair Kits
| Item | Guidance |
|---|---|
| Lubricant | Hydrocarbon configuration: Edwards Ultragrade Performance 20. |
| VPS service kit | EH1200 repair kit — part 30551800 |
| Service note | The process chamber is dry. Gearbox, coupling-cover and shaft-seal reservoirs still require the correct lubricant. |
Applications
Mechanical boosters are used to increase pumping speed and reduce pump-down time in industrial vacuum systems. Typical duties include heat treatment, metallurgy, vacuum coating, chemical processing, steel degassing, vacuum drying and large chamber evacuation. Final performance depends on the backing pump and system conductance.
VPS Resources
Need help sizing the booster system?
Send the required pumping speed, pressure range, backing pump, process gas, voltage, frequency, gas-flow orientation and seal requirements. VPS will help confirm the correct part number.